☆ 4.8 Review

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis

CHEMICAL REVIEWS (2023)

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INORGANIC CHEMISTRY (2023)

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Breaking trade-off between particle size and ordering degree of intermetallic catalysts for fuel cells

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Integration of multiple advantages into one catalyst: non-CO pathway of methanol oxidation electrocatalysis on surface Ir-modulated PtFeIr jagged nanowires

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Ultra -stable Pt5La intermetallic compound towards highly efficient oxygen reduction reaction

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NANO RESEARCH (2023)

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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

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NATURE MATERIALS (2023)

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How Size and Strain Effect Synergistically Improve Electrocatalytic Activity: A Systematic Investigation Based on PtCoCu Alloy Nanocrystals

Wenjing Zhang et al.

Summary: The article discusses the regulation of the mass activity and specific activity of Pt alloy nanocrystal catalysts in the oxygen reduction reaction (ORR) by the size effect and strain effect. The particle size plays a decisive role in the electrochemical active surface area (ECSA) and mass activity (MA), while the surface coordination number and compression strain determine the specific activity (SA). Pt47Co26Cu27 is identified as a superior ORR catalyst with high MA and SA values.

SMALL (2023)

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Article Chemistry, Multidisciplinary

Ultrathin Co-N-C Layer Modified Pt-Co Intermetallic Nanoparticles Leading to a High-Performance Electrocatalyst toward Oxygen Reduction and Methanol Oxidation

Jiaxiang Chen et al.

Summary: In this study, a simple method for fabricating a high-performance composite catalyst consisting of Pt-Co intermetallic nanoparticles (IMNs) and Co, N co-doped carbon (Co-N-C) is proposed. The composite catalyst exhibits excellent activity and stability towards oxygen reduction reactions (ORR) and methanol oxidation reactions (MOR), delivering outstanding mass activities of 1.96 and 2.92 A mg(Pt)(-1) respectively, due to the synergistic effect of Pt-Co IMNs and Co-N-C film. This research may offer a promising strategy to enhance the electrocatalytic performance of Pt-based catalysts.

SMALL (2023)

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Article Multidisciplinary Sciences

Mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire electrocatalyst for efficient oxygen reduction

Hui Jin et al.

Nature Communications (2023)

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Article Multidisciplinary Sciences

Atomic-thick metastable phase RhMo nanosheets for hydrogen oxidation catalysis

Juntao Zhang et al.

Summary: This study reports the synthesis of free-standing RhMo nanosheets with atomic thickness and a unique core/shell structure. The polymorphic interface between the core and shell regions stabilizes and activates the metastable phase catalysts, resulting in excellent hydrogen oxidation activity and stability.

NATURE COMMUNICATIONS (2023)

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Article Chemistry, Physical

Development of a Novel Pt3V Alloy Electrocatalyst for Highly Efficient and Durable Industrial Hydrogen Evolution Reaction in Acid Environment

Yumin Da et al.

Summary: Alloying platinum with early transition metals is a promising approach to optimize catalyst adsorption behaviors. A strategy combining thermal shock technique with electrochemical activation is reported for the first time to prepare Pt3V alloy as a hydrogen evolution reaction catalyst. The as-prepared catalyst exhibits exceptional catalytic activity and durability, outperforming the state-of-the-art Pt/C catalyst. This work may inspire future research on Pt-based early transition metal alloy catalysts for electrocatalysis.

ADVANCED ENERGY MATERIALS (2023)

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Article Chemistry, Physical

Scalable and Controllable Synthesis of Pt-Ni Bunched-Nanocages Aerogels as Efficient Electrocatalysts for Oxygen Reduction Reaction

Yuanyuan Zheng et al.

Summary: A scalable, controllable, and general strategy to prepare Pt-based oxygen reduction reaction (ORR) electrocatalysts with excellent performance and stability was demonstrated. The Pt83Ni17 bunched-nanocages aerogels (BNCs AG) showed significantly enhanced ORR activity and durability compared to Pt/C, with mass activity (MA) of 1.95 A mg(Pt)(-1) and MA retention of 82.6% after a 20,000-cycles accelerated durability test. The optimized ligand and strain effects, as well as the appropriate porosity, contributed to the excellent activity and durability of the Pt83Ni17 BNCs AG.

ADVANCED ENERGY MATERIALS (2023)

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Review Nanoscience & Nanotechnology

Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Yuhui Tian et al.

Summary: A sustainable and cost-effective production of H2O2 via electrochemical oxygen reduction reaction is highly desired for various applications. Significant progress has been made in catalyst design and innovative cell designs for electrocatalytic production of H2O2. This review summarizes recent advances, including mechanistic explorations, theoretical computations, experimental evaluations, and perspectives on addressing remaining challenges.

NANO-MICRO LETTERS (2023)

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Review Nanoscience & Nanotechnology

Shape-Controlled Synthesis of Platinum-Based Nanocrystals and Their Electrocatalytic Applications in Fuel Cells

Can Li et al.

Summary: To achieve environmentally friendly energy conversion with carbon neutrality, the innovation of electrocatalysts is crucial for harnessing renewable resources. Pt-based nanocrystals (NCs) have been recognized as promising candidates for efficient catalysis in hydrogen- and hydrocarbon-based fuel cells. In this review, we discuss the significant advancements in shape-controlled Pt and Pt-based NCs, and their applications in fuel cells. We highlight the precise control of morphology in colloidal systems, as well as the development of shape-controlled Pt, Pt-alloy, Pt-based core@shell NCs, Pt-based nanocages, and Pt-based intermetallic compounds. Case studies on typical reactions (oxygen reduction at the cathode and small molecule oxidation at the anode) are presented to demonstrate the enhanced performance of shape-controlled Pt-based nanocatalysts. Finally, we provide an outlook on the potential challenges and future prospects of shape-controlled nanocatalysts.

NANO-MICRO LETTERS (2023)

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Article Nanoscience & Nanotechnology

Duplex Interpenetrating-Phase FeNiZn and FeNi3 Heterostructure with Low-Gibbs Free Energy Interface Coupling for Highly Efficient Overall Water Splitting

Qiuxia Zhou et al.

Summary: A multidimensional nanoporous interpenetrating-phase FeNiZn alloy and FeNi3 intermetallic heterostructure is constructed on NiFe foam by dealloying protocol, exhibiting exceptional bifunctional activities for water splitting. The as-built water electrolyzer with FeNiZn/FeNi3@NiFe as both anode and cathode exhibits record-high performances for sustainable hydrogen output. FeNiZn/FeNi3@NiFe holds prospective application potential as the bifunctional electrocatalyst for water splitting due to its fine performances, scalable fabrication, and low cost.

NANO-MICRO LETTERS (2023)

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Article Chemistry, Applied

PtCoNi ternary intermetallic compounds anchored on Co, Ni and N co-doped mesoporous carbon: Synergetic effect between PtCoNi nanoparticles and doped mesoporous carbon promotes the catalytic activity

Chaozhong Li et al.

Summary: We report a high-performance catalyst consisting of ordered PtCoNi ternary nanoparticles anchored on N, Co, and Ni co-doped dodecahedral mesoporous carbon (DMC). The catalyst exhibits enhanced electrocatalytic activity towards oxygen reduction reaction due to the formation of PtCoNi intermetallic compounds and the dual active centers of Co-N and Ni-N coordination. The optimized sample Pt3Co0.7Ni0.3/DMC demonstrates excellent performance with mass activity and specific activity 7.33 and 6.19 times higher than commercial Pt/C, respectively. This study provides critical insights into constructing efficient catalysts using a ternary intermetallic strategy and synergetic effect between active components and support.

JOURNAL OF ENERGY CHEMISTRY (2023)

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Article Chemistry, Physical

Pt1-xNix Alloy Nanoparticles Embedded in Self-Grown Carbon Nanofibers: Synthesis, Properties and Catalytic Activity in HER

Anton A. Popov et al.

Summary: The development of new heterogeneous Pt-containing catalysts has remained relevant over the past decades. This paper presents a method for producing metal-carbon composites, Pt1-xNix/CNF, with a tunable Pt/Ni ratio. The composites consist of Pt1-xNix (x = 0.0-1.0) nanoparticles embedded within a carbon nanofiber (CNF) structure. The synthesis involves the spontaneous disintegration of Pt1-xNix alloys in an ethylene-containing atmosphere, resulting in the formation of CNF. The study also investigates the impact of Ni content on the activity of Pt1-xNix alloys in ethylene decomposition, revealing an increase in efficiency with higher Ni concentration. Additionally, the synthesized Pt1-xNix/CNF composites exhibit superior activity compared to the Pt/Vulcan commercial catalyst in the electrochemical hydrogen evolution reaction.

CATALYSTS (2023)

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Article Chemistry, Multidisciplinary

Homogeneous Metastable Hexagonal Phase Iridium Enhances Hydrogen Evolution Catalysis

Shize Geng et al.

Summary: Catalytic reactions are surface-sensitive processes. Homogeneous metastable hexagonal close-packed (hcp) Ir is grown onto metastable phase hcp Ni, demonstrating high intrinsic activity for the alkaline hydrogen evolution reaction (HER) with low overpotential and high specific activity. The stable structure of epitaxially grown metastable hcp Ir contributes to its remarkable HER activity, making it a potential catalyst for fundamental catalytic applications.

ADVANCED SCIENCE (2023)

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Article Multidisciplinary Sciences

Toward controllable and predictable synthesis of high- entropy alloy nanocrystals

Yi-Hong Liu et al.

Summary: High-entropy alloy (HEA) nanocrystals, specifically quinary HEA nanocrystals made of platinum-group metals, can be synthesized in a controllable and predictable manner by understanding the reduction kinetics of metal precursors and entropy of mixing. The time it takes for each precursor to reach a steady state plays a critical role in determining the structures of HEA nanocrystals. Dendritic HEA nanocrystals with a defect-rich surface exhibit enhanced catalytic activity and durability, making them a promising candidate for hydrogen evolution and oxidation reactions.

SCIENCE ADVANCES (2023)

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Article Chemistry, Multidisciplinary

Anti-CO Poisoning FePtRh Nanoflowers with Rh-Rich Core and Fe-Rich Shell Boost Methanol Oxidation Electrocatalysis

Hu Liu et al.

Summary: In this study, surface segregated FePtRh nanoflowers were introduced to effectively eliminate the CO* poisoning during MOR electrocatalysis. The optimized Fe21Pt66Rh13/C showed high mass activity and specific activity. The electron transfer from Pt to Rh or Fe atoms, as well as the alloying of Rh atoms and surface-segregated structures, contributed to the enhanced anti-CO poisoning ability.

ADVANCED FUNCTIONAL MATERIALS (2023)

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Article Chemistry, Multidisciplinary

Direct Growth of Uniform Bimetallic Core-Shell or Intermetallic Nanoparticles on Carbon via a Surface-Confinement Strategy for Electrochemical Hydrogen Evolution Reaction

Mingzhen Hu et al.

Summary: Due to the surface inhomogeneity, it is challenging to directly grow uniform bimetallic nanoparticles (NPs) on solid supports with controllable structure and size. In this study, a surface-confinement strategy was utilized to prepare ultrafine bimetallic Pt-M NPs (M(sic)Fe, Cu, and Co) with core-shell or intermetallic compounds structure on an N functionalized carbon support (NC). The N species on NC support can disperse metal cations, facilitating uniform nucleation and growth of bimetallic NPs. Moreover, N-mediation confines metal transfer to a narrow region on NC, resulting in localized particle growth and formation of ultrafine bimetallic NPs. The Pt3Fe NPs on NC exhibited excellent catalytic activity and durability for electrochemical hydrogen evolution reaction.

ADVANCED FUNCTIONAL MATERIALS (2023)

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Article Chemistry, Multidisciplinary

Low-Coordination Trimetallic PtFeCo Nanosaws for Practical Fuel Cells

Lingzheng Bu et al.

Summary: In this study, a new type of one-dimensional trimetallic platinum-iron-cobalt nanosaws was designed as fuel cell catalysts, which showed high activity for the oxygen reduction reaction (ORR) and outperformed commercial Pt/C catalysts by more than 25 times. The researchers also discovered the correlation between low-coordination platinum sites and electronic activities, ensuring high ORR activities. This work represents a new direction for practical fuel cell catalysts.

ADVANCED MATERIALS (2023)

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Article Chemistry, Multidisciplinary

High-Entropy Alloy Aerogels: A New Platform for Carbon Dioxide Reduction

Hanjun Li et al.

Summary: High-entropy alloy aerogels (HEAAs) show great potential as new catalysts for the carbon dioxide reduction reaction (CO2RR). The PdCuAuAgBiIn HEAAs fabricated using the freeze-thaw method exhibit almost 100% Faradaic efficiency for C1 products and outperform other materials, thanks to the strong interactions between different metals and the regulation of unsaturated surface sites.

ADVANCED MATERIALS (2023)

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Article Chemistry, Multidisciplinary

Synthesis of L10-Iron Triad (Fe, Co, Ni)/Pt Intermetallic Electrocatalysts via a Phosphide-Induced Structural Phase Transition

Jingyu Guan et al.

Summary: This study successfully synthesized sub-asymptotic to 5 nm L1(0)-intermetallic nanoparticles using phosphide intermediate-induced structural phase transition. The formation of L1(0) structure, exemplified by L1(0)-CoPt, depended on Co2P intermediates that provided abundant phosphorus vacancies to accelerate platinum diffusion into the orthorhombic cobalt-rich skeletons. L1(0)-CoPt prepared by this method showed a high degree of ordering and demonstrated broad adaptability of various Pt-based electrocatalysts to improve their electrocatalytic performance. Moreover, other L1(0)-M(iron triad)Pt intermetallics, namely L1(0)-NiPt and L1(0)-FePt, were also successfully prepared through this phosphide-induced phase transition.

ADVANCED MATERIALS (2023)

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Article Chemistry, Physical

Constructing uniform sub-3 nm PtZn intermetallic nanocrystals via atomic layer deposition for fuel cell oxygen reduction

Chaojun Huang et al.

Summary: A strategy to prepare size and distribution controllable Pt-based intermetallic nanocrystals using atomic layer deposition on Pt nanoparticles is reported. The resulting nanocrystals exhibit enhanced catalytic activity and durability.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

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Article Chemistry, Physical

Intermetallic Pd3Pb nanobranches with low-coordinated surface atoms for highly efficient ethanol oxidation reaction

Dian Tri Lestarini et al.

Summary: Pd-Pb bimetallic nanocrystals show good tolerance and catalytic performance in electrocatalysis. Highly uniform Pd3Pb nanobranches synthesized by a wet-chemical method exhibit high electrocatalytic activity in alkaline media.

APPLIED SURFACE SCIENCE (2023)

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Review Chemistry, Physical

Platinum intermetallic nanoparticle cathode catalysts for proton-exchange-membrane fuel cells: Synthesis and ordering effect

Lei Tong et al.

Summary: Improving cost-effectiveness in proton-exchange-membrane fuel cells through the use of platinum (Pt) alloy nanoparticles as cathode catalysts is a clear objective. Recent research has focused on tailoring disordered structures into ordered intermetallic structures to enhance the performance and durability of alloy catalysts. This mini-review provides an overview of the current understanding of the formation mechanism of intermetallic nanoparticle catalysts and highlights advancements in synthesis methods for better size and composition control. Controversies surrounding the ordering effect of intermetallic nanoparticle catalysts are discussed, emphasizing the critical significance of ordered structures in developing advanced alloy catalysts.

CURRENT OPINION IN ELECTROCHEMISTRY (2023)

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Review Chemistry, Multidisciplinary

A rational design of functional porous frameworks for electrocatalytic CO2 reduction reaction

Changli Wang et al.

Summary: The electrocatalytic CO2 reduction reaction (ECO2RR) is an important approach to achieve lower carbon emissions in the future. The design of catalysts with satisfactory activity, selectivity, and stability for ECO2RR has attracted extensive attention. Functional porous frameworks, such as MOFs, COFs, composites, and pyrolysates, have been regarded as superior catalysts due to their unique properties. The structure-activity relationships of these frameworks have been comprehensively considered based on metallic element type, local coordination environment, and microstructure. The challenges and perspectives for further development of ECO2RR using functional porous frameworks are proposed in this review.

CHEMICAL SOCIETY REVIEWS (2023)

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Article Chemistry, Multidisciplinary

Regulating Catalytic Properties and Thermal Stability of Pt and PtCo Intermetallic Fuel-Cell Catalysts via Strong Coupling Effects between Single-Metal Site-Rich Carbon and Pt

Yachao Zeng et al.

Summary: This study explores the synergistic effect between single Mn site-rich carbon (Mn-SA-NC) and Pt nanoparticles to improve the intrinsic activity and stability of platinum-group-metal (PGM) catalysts. The results show a strong coupling effect between Pt and MnN4 sites, which enhances the immobilization of Pt nanoparticles during the oxygen reduction reaction (ORR). Both Pt and L1(2)-Pt3Co nanoparticles remain well-dispersed on the Mn-SA-NC support after high-temperature annealing, indicating enhanced thermal stability. The tested PGM catalysts exhibit compelling performance and durability in membrane electrode assemblies (MEAs).

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

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Article Chemistry, Multidisciplinary

Sub-Monolayer SbO x on PtPb/Pt Nanoplate Boosts Direct Formic Acid Oxidation Catalysis

Xinrui Hu et al.

Summary: In order to promote the commercialization of direct formic acid fuel cells, it is crucial to explore new types of catalysts for direct formic acid oxidation with high activity and direct pathway. This study presents the synthesis of intermetallic platinum-lead/platinum nanoplates inlaid with sub-monolayer antimony oxide surface, which demonstrates remarkable catalytic performance in formic acid oxidation. The optimization of the local coordination environment by the surface sub-monolayer SbOx and the electron transfer from Pb and Sb to Pt contribute to the enhanced dehydrogenation process, while the sub-monolayer SbOx effectively reduces CO generation, leading to improved performance in formic acid oxidation.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

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Article Chemistry, Multidisciplinary

Modulating the d-Band Center Enables Ultrafine Pt3Fe Alloy Nanoparticles for pH-Universal Hydrogen Evolution Reaction

Panyong Kuang et al.

Summary: By providing dual active sites for H2O dissociation and H+ reduction, ordered intermetallic alloys exhibit extraordinary performance for pH-universal hydrogen evolution reaction (HER). In this study, activated N-doped mesoporous carbon spheres supported intermetallic Pt3Fe alloys (Pt3Fe/NMCS-A) are reported as highly-efficient electrocatalysts for pH-universal HER. The synthetic strategy is further extended to the synthesis of Pt3Co and Pt3Ni alloys with excellent HER activity in pH-universal electrolytes, showing great potential for practical applications.

ADVANCED MATERIALS (2023)

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Article Chemistry, Multidisciplinary

Coupling Single-Atom Sites and Ordered Intermetallic PtM Nanoparticles for Efficient Catalysis in Fuel Cells

Fangyao Zhou et al.

Summary: Researchers proposed a gas-phase ordered alloying strategy to construct an efficient catalytic system for the acidic oxygen reduction reaction in proton-exchange membrane fuel cells. By combining PtM intermetallic compounds and dense isolated transition metal sites on nitrogen-doped carbon, the strategy successfully trapped flowing metal salt and prevented partial aggregation. This study offers a method to reduce Pt loading in fuel cells and develop an efficient synergistic catalytic system.

SMALL (2023)

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Article Chemistry, Applied

High-entropy L12-Pt(FeCoNiCuZn)3 intermetallics for ultrastable oxygen reduction reaction

Qian Zhang et al.

Summary: This study presents the design of high-entropy intermetallic (HEI) L12-Pt(FeCoNiCuZn)3 as an electrocatalyst to enhance the stability of Pt-based cathodes for proton exchange membrane fuel cells (PEMFCs). The Pt(FeCoNiCuZn)3/C nanoparticles demonstrate significantly improved stability and activity compared to Pt/C and PtCu3/C catalysts. Moreover, the Pt(FeCoNiCuZn)+3/C catalyst exhibits excellent stability even under high-temperature conditions in fuel cells.

JOURNAL OF ENERGY CHEMISTRY (2023)

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Article Materials Science, Multidisciplinary

A general approach to high-entropy metallic nanowire electrocatalysts

Yingjun Sun et al.

Summary: High-entropy alloys (HEAs) have great potential for efficient catalyst discovery. We report a method for constructing atomic-thick Pt-based HEA nanowires (NWs) with multiple components. The key points in forming a uniform HEA single-phase solid solution are the initial formation of Pt NWs and the nucleation rate of other transition metals. Our method can synthesize 26 kinds of multimetallic NWs, including 17 HEAs. The high-entropy design introduces lattice distortion, altering the strain distribution and electronic structure, enabling the HEA NWs to exhibit outstanding catalytic performance in hydrogen oxidation and evolution reactions.

MATTER (2023)

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Review Chemistry, Multidisciplinary

Recent progress in intermetallic nanocrystals for electrocatalysis: From binary to ternary to high-entropy intermetallics

Jiawei Liu et al.

Summary: This mini-review summarizes the recent progress in the syntheses and electrocatalytic applications of noble metal-based intermetallic nanocrystals. Various synthetic strategies for constructing binary, ternary and high-entropy intermetallic nanocrystals are discussed, highlighting their strengths and limitations. The electrocatalytic applications of intermetallic nanocrystals in oxygen reduction reaction, small molecule oxidation reactions, hydrogen evolution reaction, CO2/CO reduction reactions, and nitrogen reduction reaction are also discussed.

SMARTMAT (2023)

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Article Chemistry, Multidisciplinary

Structurally ordered high-entropy intermetallic nanoparticles with enhanced C-C bond cleavage for ethanol oxidation

Dongdong Wang et al.

Summary: Researchers developed a structurally ordered PtRhFeNiCu high-entropy intermetallics as an electrocatalyst for high-temperature polybenzimidazole-based direct ethanol fuel cells, exhibiting excellent electrocatalytic activity and CO tolerance. The power density achieved was 47.50 mW/cm(2), 2.97 times higher than Pt/C. The new class of high-entropy intermetallics showed better C-C bond-breaking ability, stability, and electrochemical activity compared to high-entropy alloys and Pt/C catalysts.

SMARTMAT (2023)

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Article Chemistry, Physical

Size and near-surface engineering in weak-oxidative confined space to fabricate 4 nm L10-PtCo@Pt nanoparticles for oxygen reduction reaction

Yifei Liao et al.

Summary: By modulating the near-surface structure of PtCo intermetallics, a concave Pt-rich surface was successfully constructed on a 4 nm L1(0)-PtCo core, resulting in enhanced oxygen reduction reaction (ORR) performance. The PtCo-1000/C catalyst exhibited improved activity (1.290 A·mg(Pt)(-1) and 1.529 mA·cm(Pt)(-2) at 0.9 V vs. reversible hydrogen electrode (RHE)) and stability (85.2% of initial mass activity after accelerated degression tests (ADTs)).

NANO RESEARCH (2023)

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Article Chemistry, Physical

Fabrication of 3D hollow acorn-shell-like PtBi intermetallics via a surfactant-free pathway for efficient ethylene glycol electrooxidation

Tingting Wan et al.

Summary: Atomically ordered bimetallic PtBi intermetallics with clean surfaces and unique three-dimensional hollow acorn-shell-like structure (3D PtBi HASL) were synthesized using a simple, low-temperature, and surfactant-free one-pot method. The 3D PtBi HASL intermetallics exposed abundant active sites and enhanced adsorption of OHads, leading to high electrocatalytic performance. This work provides inspiration for the design of efficient anode electrocatalysts for fuel cell applications.

NANO RESEARCH (2023)

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Article Nanoscience & Nanotechnology

Intermetallic Nanoarchitectures for Efficient Electrocatalysis

Ho Young Kim et al.

Summary: Intermetallic nanoarchitectures have shown great potential as efficient electrocatalysts for energy conversion reactions. By generating well-defined nanoarchitectures, the performance of intermetallic catalysts can be significantly enhanced. These nanoarchitectures possess high intrinsic activity due to their unique structural factors, such as controlled facets, surface defects, and nanoscale confinement effects. Notable examples of intermetallic nanoarchitectures include facet-controlled intermetallic nanocrystals and multidimensional nanomaterials.

ACS NANOSCIENCE AU (2023)

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Article Chemistry, Physical

Lamellar-assembled PdNi super-nanosheets as effective oxygen redox dual-electrocatalysts for rechargeable Zn-air batteries

Luhong Fu et al.

Summary: In this study, PdNi super-nanosheets with bifunctional catalytic activity were successfully synthesized and applied in rechargeable metal-air batteries, showing excellent electrocatalytic activity and stability. This research provides a feasible strategy for developing self-assembled multimetallic 2D nanomaterials for energy conversion applications.

NANO RESEARCH (2023)

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Article Chemistry, Multidisciplinary

PtCo@PtSn Heterojunction with High Stability/Activity for pH-Universal H2 Evolution

Jinli Chen et al.

Summary: This study demonstrates the development of a PtCo@PtSn heterojunction catalyst with excellent hydrogen evolution reaction performance in pH-universal electrolytes, achieved through interface engineering to optimize the surface electronic structure and reduce the energy required for hydrogen production.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Doping-Modulated Strain Enhancing the Phosphate Tolerance on PtFe Alloys for High-Temperature Proton Exchange Membrane Fuel Cells

Wei Li et al.

Summary: In this study, the phosphate tolerance of PtFe ordered intermetallic alloys was enhanced through a doping-modulated strain strategy with Cu as a dopant, leading to improved performance in HT-PEMFCs. The Cu doping helped to create compressive strain in PtFe crystals, altering the electronic structure of electrocatalysts and weakening the adsorption energy between phosphoric acid and Pt surfaces. The HT-PEMFCs assembled with these cathodic electrocatalysts showed higher peak power and stability compared to commercial Pt/C electrocatalysts.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Review Chemistry, Multidisciplinary

Noble Metal Based Electrocatalysts for Alcohol Oxidation Reactions in Alkaline Media

Xiaoyang Fu et al.

Summary: This minireview provides a brief introduction to the fundamental challenges associated with anode alcohol oxidation reaction (AOR) in alkaline direct alcohol fuel cells (ADAFCs), as well as the key performance metrics and evaluation protocols for benchmarking AOR electrocatalysts. Recent advances in noble-metal based AOR electrocatalysts, such as Pt, Pd, and Rh, are summarized with a focus on design criteria for improving specific activity and electrochemical surface area to achieve high mass activity and long term durability. Strategies to enhance Faradaic efficiency and reduce overpotential are also discussed. The article concludes with a brief perspective on future challenges and opportunities.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Atomically Dispersed Intrinsic Hollow Sites of M-M1-M (M1 = Pt, Ir; M = Fe, Co, Ni, Cu, Pt, Ir) on FeCoNiCuPtIr Nanocrystals Enabling Rapid Water Redox

Yu Lu et al.

Summary: This study reports a significant strategy for the rapid synthesis of high-entropy alloys (HEAs) by pulsed laser irradiation. Two types of intrinsic atomic hollow sites over the surface of HEAs are revealed that enable engaging bifunctional activities for water splitting. This work delivers a powerful technique to synthesize highly efficient HEA catalysts and unravels the formation mechanism of active sites across the surface of HEA catalysts.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Synthesis of Pd3Sn and PdCuSn Nanorods with L12 Phase for Highly Efficient Electrocatalytic Ethanol Oxidation

Ming Zhou et al.

Summary: The study presents a facile wet-chemical method to synthesize Pd3Sn nanorods with different crystal phases and demonstrates the ease of tuning the crystal phase by altering precursor types. Additionally, the method is shown to be applicable for synthesizing PdCuSn nanorods with the L1(2) crystal phase, exhibiting superior electrocatalytic performance.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Constructing Structurally Ordered High-Entropy Alloy Nanoparticles on Nitrogen-Rich Mesoporous Carbon Nanosheets for High-Performance Oxygen Reduction

Guihua Zhu et al.

Summary: Structurally ordered high-entropy alloy nanoparticles (OHEA-mNC NPs) with excellent catalytic performance have been successfully constructed on a novel 2D nitrogen-rich mesoporous carbon sandwich framework using ligand-assisted interfacial assembly and NH3 annealing.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Preparation of fcc-2H-fcc Heterophase Pd@Ir Nanostructures for High-Performance Electrochemical Hydrogen Evolution

Yiyao Ge et al.

Summary: The study successfully synthesized various Pd@Ir core-shell nanostructures with unconventional crystal phases through wet-chemical seeded method. Among them, the heterophase Pd-45@Ir-55 nanodendrites showed excellent catalytic performance, providing a new approach for the development of low-cost, efficient catalysts.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Ordered PtFeIr Intermetallic Nanowires Prepared through a Silica-Protection Strategy for the Oxygen Reduction Reaction

Zhaojun Yang et al.

Summary: This study reports the preparation of ordered PtFeIr intermetallic nanowire catalysts with superior mass activity for ORR. The use of a silica-protected strategy prevents structural destruction, maintaining the advantages of the ordered structure even after stability tests.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Unmasking the Critical Role of the Ordering Degree of Bimetallic Nanocatalysts on Oxygen Reduction Reaction by In Situ Raman Spectroscopy

Heng-Quan Chen et al.

Summary: This study investigated the influence of ordering degree on the oxygen reduction reaction (ORR) by using in situ Raman spectroscopy on AuCu bimetallic nanocatalysts (BNs) with varying degrees of ordering. The results showed that highly ordered AuCu BNs exhibited improved activity, surpassing that of benchmark Pt/C. Direct Raman spectroscopic evidence confirmed that the active site is the combination site of Au and Cu. Additionally, the ordered site showed lower affinity to *OH, making it more favorable for ORR. This work deepens the understanding of the importance of ordering degree on BNs and provides guidance for the design of improved catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

A General Concurrent Template Strategy for Ordered Mesoporous Intermetallic Nanoparticles with Controllable Catalytic Performance

Hao Lv et al.

Summary: We report a general concurrent template strategy for the precise synthesis of mesoporous Pt-/Pd-based intermetallic nanoparticles with desired morphology and ordered mesostructure. This strategy provides a powerful method for the preparation of ordered mesoporous intermetallic nanocrystals suitable for selective catalysis and fuel cell electrocatalysis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Review Chemistry, Multidisciplinary

Electrocatalysis in Alkaline Media and Alkaline Membrane-Based Energy Technologies

Yao Yang et al.

Summary: This article provides a comprehensive review of the fundamentals of electrocatalysis in alkaline media and its applications in alkaline-based energy technologies. Nonprecious anion exchange membrane fuel cells offer a promising alternative to proton exchange membrane fuel cells for sluggish oxygen reduction reaction. The understanding of proton-coupled electron transfer and active sites has contributed to the development of high-performance and durable alkaline fuel cells.

CHEMICAL REVIEWS (2022)

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Article Chemistry, Physical

No Annealing Synthesis of Ordered Intermetallic PdCu Nanocatalysts for Boosting Formic Acid Oxidation

Xiang Li et al.

Summary: Due to their high catalytic efficiency and selectivity, ordered intermetallic Pd-based nanocatalysts have greater potential than disordered nanocatalysts for formic acid oxidation reactions (FAOR). In this study, monodisperse ordered intermetallic PdCu nanocatalysts were obtained through liquid phase reduction reaction without heat treatment. The obtained nanocatalysts displayed enhanced activity and durability for FAOR compared to other types of nanocatalysts.

CHEMISTRY OF MATERIALS (2022)

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Review Chemistry, Inorganic & Nuclear

Recent advances in one-dimensional noble-metal-based catalysts with multiple structures for efficient fuel-cell electrocatalysis

Yangping Zhang et al.

Summary: 1D noble-metal-based catalysts (NMBCs) exhibit unique structures and superior catalytic behaviors in fuel cell reactions, but further research is needed on strategies for performance enhancement.

COORDINATION CHEMISTRY REVIEWS (2022)

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Review Thermodynamics

Perspective of the role of hydrogen in the 21st century energy transition

T. Capurso et al.

Summary: Hydrogen is gaining momentum in the global energy transition, with potential to create a virtuous cycle for renewables-based electricity grids and significantly reduce greenhouse gas emissions. Its sustainable production using electrolysis powered by renewable energies can contribute effectively to carbon neutrality goals.

ENERGY CONVERSION AND MANAGEMENT (2022)

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Review Chemistry, Physical

A critical survey of proton exchange membrane fuel cell system control: Summaries, advances, and perspectives

Bo Yang et al.

Summary: This paper provides a comprehensive and systematic overview of state-of-the-art control strategies for proton exchange membrane fuel cells (PEMFC). The control strategies are classified into different categories and evaluated based on their designs, performance, and applications.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Review Chemistry, Physical

Global hydrogen development-A technological and geopolitical overview

B. E. Lebrouhi et al.

Summary: Hydrogen energy will play an important role in the global energy transition and lead to a significant reduction in greenhouse gas emissions in the coming decades. Coordinated efforts and substantial investment are needed to develop the hydrogen value chain on a global scale.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Review Chemistry, Physical

Bibliometric analysis of the research on hydrogen economy: An analysis of current findings and roadmap ahead

Sanjay Kumar Kar et al.

Summary: Based on a comprehensive analysis of 1275 articles published in the past five decades, it was found that the literature on the hydrogen economy has been increasing, particularly from 2016 to 2020. China and the United States are leading in research on hydrogen economy, focusing on multidisciplinary aspects such as hydrogen production, storage, transportation, application, and public policy formulation.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Physical

Mesoporous cobalt ferrite phosphides/reduced graphene oxide as highly effective electrocatalyst for overall water splitting

Yarong Huang et al.

Summary: The hybrid catalyst of mesoporous cobalt ferrite phosphides hybridized on reduced graphene oxide (rGO) features abundant interfaces and active sites, accelerating electron exchange and ion diffusion. The mesoporous structure prevents aggregation of active sites and allows rapid bubble escape, resulting in significantly improved catalytic performance.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Preparation of Au@Pd Core-Shell Nanorods with fcc-2H-fcc Heterophase for Highly Efficient Electrocatalytic Alcohol Oxidation

Xichen Zhou et al.

Summary: The Au@Pd core-shell nanorods with a unique fcc-2H-fcc heterophase exhibit superior electrocatalytic ethanol oxidation performance, contributing to insights into the catalytic mechanism. The exceptional performance of the heterophase Au@Pd nanorods is attributed to the unconventional 2H phase, the 2H/fcc phase boundary, and the lattice expansion of the Pd shell.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Rapid Atomic Ordering Transformation toward Intermetallic Nanoparticles

Mingjin Cui et al.

Summary: This study presents a new rapid Joule heating approach to synthesize highly ordered and well-dispersed intermetallic nanoparticles. The fabricated fully ordered Pd3Pb intermetallic nanoparticles show small size distribution and excellent electrocatalytic activity for the oxygen reduction reaction. The rapid atomic ordering transformation is attributed to a vacancy-mediated diffusion mechanism, providing a new strategy for intermetallic synthesis and catalyst discovery.

NANO LETTERS (2022)

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Article Chemistry, Physical

Structure engineering of PtCu3/C catalyst from disordered to ordered intermetallic compound with heat-treatment for the methanol electrooxidation reaction

Zihao Xing et al.

Summary: In this study, a simple heat-treatment method was used to synthesize a PtCu3/C intermetallic compound catalyst with lattice compression, showing high activity and stability. The high activity towards MOR was attributed to the tightening of the Pt-M bond and the prevention of Cu dissolution by Pt.

NANO RESEARCH (2022)

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Article Chemistry, Physical

PtNiCu nanowires with advantageous lattice-plane boundary for enhanced ethanol electrooxidation

Shuna Li et al.

Summary: This study presents a simple method to synthesize e-PtNiCu NWs with high proportions of (110) and (100) facets, which exhibit remarkable performance in ethanol electrooxidation reaction. The improved performance of e-PtNiCu NWs is attributed to the synergistic catalytic effect between (110) and (100) facets. The thermodynamics and kinetic studies suggest that the synergistic effect of both facets can decrease the activation energy barrier and facilitate the charge transfer during the reaction.

NANO RESEARCH (2022)

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Article Chemistry, Physical

PdZn intermetallic compound stabilized on ZnO/nitrogen-decorated carbon hollow spheres for catalytic semihydrogenation of alkynols

Chunlin Ye et al.

Summary: Enhancing the selectivity of noble metal catalysts through electronic modulation is crucial for academic research and chemical industrial processes. The developed PdZn-ZnO/NCHS catalyst shows excellent catalytic performance for the semihydrogenation of 2-methyl-3-butyn-2-ol, with high activity and selectivity.

NANO RESEARCH (2022)

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Review Materials Science, Multidisciplinary

High-entropy intermetallics: from alloy design to structural and functional properties

Hang Wang et al.

Summary: This article provides a focused review on the recent researches on high-entropy intermetallics (HEIs), covering the fundamentals, formation rules, and structural and functional properties. The results show that HEIs with distinct properties could be a promising material for future structural and functional applications.

RARE METALS (2022)

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Article Chemistry, Multidisciplinary

Mixture Phases Engineering of PtFe Nanofoams for Efficient Hydrogen Evolution

Yue Shi et al.

Summary: In this study, PtFe nanofoams with excellent activity and stability were synthesized using the phase engineering approach, and the superior performance was explained by density functional theory calculations. This work provides a meaningful strategy for designing efficient catalysts for hydrogen evolution.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Tuning d-Band Center of Pt by PtCo-PtSn Heterostructure for Enhanced Oxygen Reduction Reaction Performance

Jinli Chen et al.

Summary: In this study, Sn and Co elements are introduced into Pt to form a PtCo-PtSn/C heterostructure for enhancing the oxygen reduction reaction (ORR). The results show that PtCo-PtSn/C exhibits remarkable ORR activity, high stability, and high mass activity in HClO4 solution.

SMALL (2022)

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Review Chemistry, Multidisciplinary

High-Entropy Alloys for Electrocatalysis: Design, Characterization, and Applications

Yiqiong Zhang et al.

Summary: High-entropy alloys are expected to be effective electrocatalytic materials due to their adjustable composition and unique properties. Recent studies have focused on the relationship between the structure and composition of HEAs and their electrocatalytic performance, proposing design strategies for optimizing these materials. The review also predicts future trends and issues in the field of HEAs for further development.

SMALL (2022)

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Review Nanoscience & Nanotechnology

Shining Light on Anion-Mixed Nanocatalysts for Efficient Water Electrolysis: Fundamentals, Progress, and Perspectives

Yaoda Liu et al.

Summary: Hydrogen, with high energy density and zero carbon emission, is widely regarded as the most promising candidate for achieving carbon neutrality and future sustainable development. Non-precious electrocatalysts with anion doping have been developed to further enhance catalytic activities. This review summarizes the recent developments of anion-mixed transition metal compounds for efficient water electrolysis applications, discusses their enhanced electrochemical performances, and proposes the challenges and future perspectives for anion-mixed water dissociation catalysts.

NANO-MICRO LETTERS (2022)

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Article Chemistry, Physical

Atomically ordered Pt3Mn intermetallic electrocatalysts for the oxygen reduction reaction in fuel cells

Jeonghoon Lim et al.

Summary: In this study, structurally ordered Pt3Mn nanoparticles on a carbon support were introduced as a highly efficient and durable catalyst for the oxygen reduction reaction (ORR). The Pt3Mn intermetallic/C catalyst demonstrated superior ORR activity and stability compared to commercial Pt/C. DFT calculations and experimental results supported the high activity and stability of Pt3Mn.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Electrochemistry

Pt3Fe Nanoparticles Triggered High Catalytic Performance for Oxygen Reduction Reaction in Both Alkaline and Acidic Media

Shuaihui Zhang et al.

Summary: This study presents a facile molten salt approach for synthesizing N-doped porous carbon embedded with Pt3Fe intermetallic nanoparticles, which shows superior catalytic performance compared to commercial Pt/C catalysts. Furthermore, as a cathode in a Zn-air battery, this material exhibits higher power density and specific capacity.

CHEMELECTROCHEM (2022)

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Review Chemistry, Multidisciplinary

Noble Metal-Based Multimetallic Nanoparticles for Electrocatalytic Applications

Hyunjoong Kim et al.

Summary: Noble metal-based multimetallic nanoparticles (NMMNs) have multifunctional and synergistic effects for various catalytic applications. Experimental and theoretical studies can tune the performance of nanoparticles. Challenges remain in synthesizing NMMNs with ideal catalytic characteristics.

ADVANCED SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Porous PdWM (M = Nb, Mo and Ta) Trimetallene for High C1 Selectivity in Alkaline Ethanol Oxidation Reaction

Yingnan Qin et al.

Summary: A novel trimetallic material PdWM was synthesized, with Pd50W27Nb23/C showing superior performance in EOR compared to commercial Pt/C and Pd/C. W and Nb enhanced adsorption and oxidation reactions, increasing C1 selectivity.

ADVANCED SCIENCE (2022)

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Article Chemistry, Inorganic & Nuclear

Controllable synthesis of platinum-tin intermetallic nanoparticles with high electrocatalytic performance for ethanol oxidation

Qian Di et al.

Summary: This article proposes a general approach for the preparation of intermetallic nanoparticles containing Pt and Sn, and investigates their activity and stability in ethanol oxidation reaction. The experimental results demonstrate that PtSn intermetallic nanoparticles with an optimized ratio exhibit the best performance and stability.

INORGANIC CHEMISTRY FRONTIERS (2022)

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Article Materials Science, Multidisciplinary

1D PtCo nanowires as catalysts for PEMFCs with low Pt loading

Jin Huang et al.

Summary: Ultra-thin platinum-cobalt nanowires (PtCoNWs) have been developed as cathode catalysts for proton-exchange membrane fuel cells, enabling ultra-low platinum loading and high-performance membrane electrode assembly. The PtCoNWs exhibit outstanding activity and stability in the oxygen reduction reaction, potentially due to the highly alloyed structure.

SCIENCE CHINA-MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Fluorination-enabled interface of PtNi electrocatalysts for high-performance high-temperature proton exchange membrane fuel cells

Peng Long et al.

Summary: The use of dendritic Pt-Ni nanoparticles supported on fluorinated carbon black has been shown to significantly improve the performance and durability of HT-PEMFCs by forming a NixFy interface. This strategy effectively prevents Pt dissolution in practical fuel cells.

SCIENCE CHINA-MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Enhancing the magnetocaloric response of high-entropy metallic-glass by microstructural control

Hangboce Yin et al.

Summary: This study optimized the magnetocaloric responses of non-equiatomic high-entropy alloys microwires by controlling microstructure, leading to a widened working temperature range and significantly increased cooling power values. Introducing nanocrystals during processing, along with using two reference temperatures in the scaling procedure, helped overcome challenges posed by the multi-phase character of the materials.

SCIENCE CHINA-MATERIALS (2022)

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Article Multidisciplinary Sciences

Multi-principal elemental intermetallic nanoparticles synthesized via a disorder-to-order transition

Mingjin Cui et al.

Summary: Nanoscale multi-principal element intermetallics (MPEIs) can be synthesized as ultrasmall and stable nanoparticles through a disorder-to-order phase transition approach, offering a broad and tunable compositional space of active, high-surface area materials with potential applications.

SCIENCE ADVANCES (2022)

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Article Chemistry, Physical

Biaxial strained dual-phase palladium-copper bimetal boosts formic acid electrooxidation

Jiarun Geng et al.

Summary: Surface strain engineering is an effective strategy to enhance the electrocatalytic properties of noble metal nanocrystals. A dual-phase palladium-copper (DP-PdCu) bimetallic electrocatalyst with remarkable biaxial strain was constructed via a wet-chemical approach, showing superior activity towards formic acid oxidation. Density functional theory calculations revealed the downshift of d-band center of Pd atoms due to interfacial strain, weakening the adsorption strength of undesired intermediates.

NANO RESEARCH (2022)

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Article Chemistry, Physical

A facile solution phase synthesis of directly ordering monodisperse FePt nanoparticles

Yongsheng Yu et al.

Summary: This study presents a simple approach to synthesize monodisperse ordered L1(0)-FePt NPs with average size 10.7 nm without further annealing or doping the third metal atoms. The use of hexadecyltrimethylammonium chloride (CTAC) is key in inducing the thermodynamic growth of Fe and Pt atoms into the ordered intermetallic structure. The synthesized 10.7 nm L1(0)-FePt NPs exhibit a coercivity of 3.15 kOe and saturation magnetization of 45 emu/g at room temperature, showing the potential for solution phase synthesis of ordered Pt-based intermetallic NPs.

NANO RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Existence of a Heterogeneous Pathway in Palladium-Catalyzed Carbon-Carbon Coupling Reaction: Evidence from Ag@Pd3Cu Intermetallic Nanoplates

Rui Liu et al.

Summary: This study demonstrates that the Pd3Cu intermetallic compound, which does not leach Pd ions, can be used as an efficient heterogeneous catalyst with comparable activity to monometallic Pd ions in cross-coupling reactions. The combination of plasmonic catalysis and intermetallic compounds is a promising strategy for designing robust nanocatalysts.

CCS CHEMISTRY (2022)

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Review Chemistry, Multidisciplinary

Carbon Shell on Active Nanocatalyst for Stable Electrocatalysis

Ji Mun Yoo et al.

Summary: Electrocatalysis is essential for renewable energy conversion and fuel production in future energy systems. Various nanostructures have been explored to enhance electrocatalytic activity, but ensuring long-term stability of electrocatalysts is crucial for reliable energy device operation. The challenge lies in achieving both high activity and robust stability simultaneously, as the structure-property relationships affecting activity and stability differ. Introducing functional structural units into catalyst design is essential to achieve electrochemical stability while maintaining high activity.

ACCOUNTS OF CHEMICAL RESEARCH (2022)

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Review Chemistry, Multidisciplinary

Advanced Pt-Based Core-Shell Electrocatalysts for Fuel Cell Cathodes

Xueru Zhao et al.

Summary: This article introduces the application of Pt-based core-shell catalysts in proton-exchange membrane fuel cells. By low Pt loading and high corrosion resistance, Pt-based core-shell catalysts can alleviate the drawbacks of existing catalysts and enhance the activity and stability of the oxygen reduction reaction. The article provides a detailed overview of the synthesis strategies, catalytic mechanisms, and optimization of the catalysts' performance by considering factors such as shape, composition, and surface structure. The potential of core-shell catalysts in real fuel cells is evaluated.

ACCOUNTS OF CHEMICAL RESEARCH (2022)

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Article Nanoscience & Nanotechnology

Strained Pt(221) Facet in a PtCo@Pt-Rich Catalyst Boosts Oxygen Reduction and Hydrogen Evolution Activity

Emmanuel Batsa Tetteh et al.

Summary: The development of highly active and durable Pt-based electrocatalysts is crucial for the industrial application of fuel cells. In this study, a high-performance electrocatalyst consisting of a one-dimensional nanowire catalyst with a PtCo alloy core and Pt-rich shell is presented. The nanoscale PtCo catalyst exhibits excellent performance in the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER), attributed to the high ratio of Pt(221) facets on the catalyst surface.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Multidisciplinary

Short-Range Diffusion Enables General Synthesis of Medium-Entropy Alloy Aerogels

Guanghui Han et al.

Summary: A general strategy for preparing ultralight 3D porous medium-entropy alloy aerogels (MEAAs) has been reported, which overcomes the immiscible behavior of different metals to achieve single-phase MEAAs. The as-synthesized MEAAs show high catalytic activity and selectivity in methanol oxidation reactions. Additionally, a MEAAs-based water electrolyzer demonstrates low cell voltage for value-added formate production.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Local Coordination Regulation through Tuning Atomic-Scale Cavities of Pd Metallene toward Efficient Oxygen Reduction Electrocatalysis

Fangxu Lin et al.

Summary: Moderate adsorption of oxygenated intermediates plays a crucial role in the rational design of high-efficiency oxygen reduction reaction (ORR) electrocatalysts. Defect engineering, which can adjust the coordination environment of catalytic active sites, is a reliable strategy for tuning the geometric structure of nanomaterials. However, it remains challenging to uniformly disperse high-coordinated defects into ultrathin 2D nanosheets due to the limitations of controllable nanocrystal fabrication. This study introduces atomic-scale cavities (ASCs) as a new type of high-coordinated active site and successfully incorporates them into suprathin Pd (111)-exposed metallene for enhanced ORR performance.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Native Ligand Carbonization Renders Common Platinum Nanoparticles Highly Durable for Electrocatalytic Oxygen Reduction: Annealing Temperature Matters

Zhicheng Li et al.

Summary: This study presents a method to enhance the durability of Pt nanoparticles by converting the surface ligands into ultrathin graphitic shells through thermal annealing. The annealing temperature plays a critical role in determining the ORR performance of Pt catalysts, with Pt nanoparticles annealed at 700 degrees C showing high activity and exceptional stability. The graphitic-shell-coated Pt catalysts exhibit superior ORR stability and can be applied in designing durable catalysts for fuel cells.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

An Open-Ended Ni3S2-Co9S8 Heterostructures Nanocage Anode with Enhanced Reaction Kinetics for Superior Potassium-Ion Batteries

Shipeng Zhang et al.

Summary: The Ni-Co-S@rGO nanocages were designed as anode materials for potassium-ion batteries, exhibiting excellent performance in reducing K+ diffusion length, improving reaction kinetics, and achieving high reversible capacity and low capacity degradation. Finite-element-simulation in situ characterizations revealed the unique structural advantages and electrochemical reaction mechanisms of Ni-Co-S@rGO, providing important guidance for designing high-performance energy-storage materials.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Nickel-Based High-Entropy Intermetallic as a Highly Active and Selective Catalyst for Acetylene Semihydrogenation

Jiamin Ma et al.

Summary: In this study, a novel catalyst design based on high-entropy intermetallics (HEI) was reported, which achieved high catalytic activity and completely inhibited overhydrogenation of ethylene.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Tuning the Spin State of the Iron Center by Bridge-Bonded Fe-O-Ti Ligands for Enhanced Oxygen Reduction

Yarong Liu et al.

Summary: This article introduces a spin-state transition strategy by regulating axial Fe-O-Ti ligands to improve the oxygen reduction reaction activity of iron centers, and an optimized catalyst was prepared using this strategy, demonstrating superior performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Stress Regulation of the Oxygen Reduction Reaction on a Pt (100) Surface Using First Principles Calculations

Jincheng Hou et al.

Summary: The oxygen reduction reaction on a strained Pt (100) surface was studied using periodic density functional theory calculations. The study found a linear relationship between strain and the d-band center, and observed that adsorption energy was more sensitive to compressive strain. Further analysis showed that compressive strain reduced the over potential of the ORR reaction and increased catalyst activity. The study also identified water evolution as a potentially rate-limiting step.

CHEMISTRY LETTERS (2022)

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Article Chemistry, Multidisciplinary

Intermetallic PdCd Core Promoting CO Tolerance of Pd Shell for Electrocatalytic Formic Acid Oxidation†

Ming-Xi Chen et al.

Summary: The core/shell catalyst i-PdCd@Pd shows enhanced CO anti-poison ability and FAOR performance in DFAFCs, with 24 times higher mass activity and 4 times higher specific activity at peak potential compared to commercial Pd/C catalyst. This improvement is attributed to the downshift of d-band center of surface Pd atoms induced by the intermetallic PdCd under-layers in i-PdCd@Pd, as observed through in-situ surface-enhanced infrared absorption spectroscopy (ATR-SEIRA) and X-ray photoelectron spectroscopy (XPS).

CHINESE JOURNAL OF CHEMISTRY (2022)

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Review Chemistry, Inorganic & Nuclear

Recent progress in low-dimensional palladium-based nanostructures for electrocatalysis and beyond

Bingyan Xu et al.

Summary: This review summarizes the synthesis and rational design of low-dimensional Pd-based nanostructures, and classifies various strategies based on the correlation between material properties and structure. The role of these strategies in different applications is discussed, and the current challenges and future prospects in the development of Pd-based nanomaterials are explored.

COORDINATION CHEMISTRY REVIEWS (2022)

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Review Chemistry, Physical

Hydrogen energy storage integrated hybrid renewable energy systems: A review analysis for future research directions

A. Z. Arsad et al.

Summary: This paper presents a comprehensive review of highly cited articles on HydESS and provides detailed insights into future directions and applications. The study shows that research on HydESS has expanded rapidly in recent years, with a focus on control and test systems-based methods. The analysis highlights the challenges and issues in the field of HydESS and suggests potential solutions.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Physical

Activating interfacial S sites of MoS2 boosts hydrogen evolution electrocatalysis

Shuo Geng et al.

Summary: This study activated the interfacial S sites of MoS2 nanosheets by coupling with Ru nanoparticles on the inert basal plane, modulating the electronic structure and optimizing H adsorption. As a result, the Ru-MoS2 catalyst exhibited significantly improved hydrogen evolution reaction performance in both acidic and alkaline solutions, demonstrating the potential for enhancing the activity of other transition metal sulfide electrocatalysts.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Intermetallic IrGa-IrOx core-shell electrocatalysts for oxygen evolution

Lin-Wei Chen et al.

Summary: The study presents a low-Ir core-shell OER electrocatalyst with high activity in acidic media, showing a significantly improved OER performance compared to commercial Ir/C catalyst. The enhanced activity of the IrGa-IMC@IrOx catalysts is attributed to the modified electronic structure of IrOx induced by the intermetallic IrGa core, leading to improved adsorption capacity for O and OH binding and lower energy barrier for OER rate-determining steps.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Ordering Degree-Dependent Activity of Pt3M (M = Fe, Mn)Intermetallic Nanoparticles for Electrocatalytic Methanol Oxidation

Ming-Xi Chen et al.

Summary: Researchers have prepared a series of small-sized intermetallic core/shell catalysts with different ordering degrees using a high-temperature sulfur-confined method. They have found a strong correlation between the ordering degree of the intermetallic core and the electrocatalytic activity for the methanol oxidation reaction.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

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Article Chemistry, Multidisciplinary

Synthesis and Characterization of Core-Shell Cu-Ru, Cu-Rh, and Cu-Ir Nanoparticles

Alexandre C. Foucher et al.

Summary: In this study, we report a synthesis method for the preparation of core-shell Cu-Ru, Cu-Rh, and Cu-Ir nanoparticles, with copper as the core and platinum-group metals segregated on the surface. This synthesis method allows for an increase in the surface area of the metals and improves catalytic performance. Additionally, selective etching of the Cu core leads to an increase in active surface area.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

High Entropy Alloy Electrocatalytic Electrode toward Alkaline Glycerol Valorization Coupling with Acidic Hydrogen Production

Linfeng Fan et al.

Summary: In this study, a new range of high entropy alloy self-supported electrodes were experimentally prepared and exhibited good electrocatalytic performance in glycerol oxidation reaction. By studying the surface atomic configurations, the catalytic active center was identified, and a hybrid alkali/acid flow electrolytic cell was successfully developed for efficient and stable hydrogen evolution and formate production.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

A General Synthetic Method for High-Entropy Alloy Subnanometer Ribbons

Lu Tao et al.

Summary: This paper proposes a low-temperature method to incorporate multiple metallic elements into a nanometer-thin ribbon, achieving the thinnest high-entropy alloy (HEA) metal material in the world. The synthetic method enables flexible control of components and concentrations in HEA nanometer ribbons, resulting in superior electrocatalytic properties.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

Bulky nanodiamond-confined synthesis of sub-5 nanometer ordered intermetallic Pd3Pb catalysts

Lei Wang et al.

Summary: The synthesis of small-sized Pd3Pb intermetallic nanocatalysts with improved catalytic performance is achieved by using a bulky nanodiamond-confined method. The resulting catalyst exhibits high activity and selectivity under mild conditions.

NANO RESEARCH (2022)

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Article Multidisciplinary Sciences

Composition-dependent ordering transformations in Pt-Fe nanoalloys

Xiaobo Chen et al.

Summary: This study investigates the composition-dependent ordering mechanisms of Pt-Fe alloy nanoparticles by in situ electron microscopy observations. The findings illustrate that the nanoscale size effect can influence the surface-core interaction and thus control the ordering processes.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2022)

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Review Thermodynamics

Green, Turquoise, Blue, or Grey? Environmentally friendly Hydrogen Production in Transforming Energy Systems

M. Hermesmann et al.

Summary: This paper reviews the current level of hydrogen production technology development and objectively compares the environmental impacts and benefits of different technologies based on a life cycle assessment. It provides recommendations for achieving environmentally friendly hydrogen production.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2022)

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Review Multidisciplinary Sciences

High-entropy nanoparticles: Synthesis-structure-property relationships and data-driven discovery

Yonggang Yao et al.

Summary: High-entropy nanoparticles have unique structures and multielemental compositions that offer potential for tunable activity and enhanced stability, but they face challenges from complex atomic structures. The review focuses on discussing important progress in high-entropy nanoparticles and critical needs for their future development.

SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Two-dimensional PtPb-PbS heterostructure enables improved kinetics and highlighted bifunctional antipoisoning for methanol electrooxidation

Liangbin Liu et al.

Summary: This study reports the rational synthesis of novel 2D Pt-PbS heterophased nanosheets as efficient fuel cell catalysts. By controlling the electron density of Pt sites, the activity and antipoisoning abilities for methanol oxidation reaction are significantly improved. This work highlights the importance of heterophase control in the rational design of 2D Pt-based nanomaterials.

SCIENCE CHINA-CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Neuron-inspired design of hierarchically porous carbon networks embedded with single-iron sites for efficient oxygen reduction

Yanwei Zhu et al.

Summary: This study reported a B, F co-doped Fe-N-C catalyst embedded in a flexible and free-standing hierarchical porous carbon framework, which exhibits optimized intrinsic activity, fast mass transfer, and well-exposed active sites. The catalyst demonstrates a high half-wave potential and small Tafel slope, and shows promising application in the fabrication of stable zinc-air batteries.

SCIENCE CHINA-CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Hexagonal PtBi Intermetallic Inlaid with Sub-Monolayer Pb Oxyhydroxide Boosts Methanol Oxidation

Wen Chen et al.

Summary: The surface inlay of sub-monolayer Pb oxyhydroxide onto hexagonal PtBi intermetallic nanoplates can enhance the activity of methanol oxidation reaction, providing an effective nanoengineering strategy.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Exploiting the Synergistic Electronic Interaction between Pt-Skin Wrapped Intermetallic PtCo Nanoparticles and Co-N-C Support for Efficient ORR/EOR Electrocatalysis in a Direct Ethanol Fuel Cell

Jiaojiao Gao et al.

Summary: The development of low-Pt catalysts with high activity and durability is crucial for fuel cells. In this study, sub-5 nm PtCo intermetallic nanoparticles with Pt-skin wrapping are successfully mounted on a single atom Co-N-C support using the barrier effect of Co-anchor. The enhanced oxygen reduction reaction activity of PtCo/Co-N-C is attributed to the direct electron transfer from PtCo to Co-N-C, resulting in an optimal d-band center of Pt. The unique electronic structure interaction and synergistic effect contribute to the excellent activity and stability of PtCo/Co-N-C, making it a promising catalyst for direct ethanol fuel cells in acidic media.

SMALL (2022)

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Article Multidisciplinary Sciences

Breaking adsorption-energy scaling limitations of electrocatalytic nitrate reduction on intermetallic CuPd nanocubes by machine-learned insights

Qiang Gao et al.

Summary: Machine learning is a powerful tool for screening electrocatalytic materials. In this study, the authors integrated machine-learned physical insights with the synthesis of structurally ordered intermetallic nanocrystals to achieve efficient nitrate reduction to ammonia. They discovered that breaking adsorption-energy scaling relations through site-specific Pauli repulsion interactions allows for non-scaling behavior in ordered intermetallics. The authors also synthesized CuPd nanocubes with high performance for nitrate reduction to ammonia.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Coordinatively Unsaturated PtCo Flowers Assembled with Ultrathin Nanosheets for Enhanced Oxygen Reduction

Min Wei et al.

Summary: In this study, we synthesized a Pt-rich PtCo nanoflower catalyst with a low coordination number, which exhibited excellent ORR performance. The superior ORR performance is mainly attributed to the optimized catalytic interface, including defect sites, high-index facets, and twin boundary. The ORR performance of a low-coordination site is much higher than that of a high-coordination site, contrary to the d-band center.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

Hollow Porous Carbon-Confined Atomically Ordered PtCo3 Intermetallics for an Efficient Oxygen Reduction Reaction

Yezhou Hu et al.

Summary: A nitrogen-doped carbon-encapsulated PtCo3 intermetallic electrocatalyst with excellent ORR activity and durability was successfully prepared in this study. The catalyst showed negligible half-wave loss after long-term stability test in acid solutions, benefiting from accelerated mass transfer process, enhanced metal interaction, and physical confinement effect.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

Understanding the Grain Boundary Behavior of Bimetallic Platinum-Cobalt Alloy Nanowires toward Oxygen Electro-Reduction

Mrinal Kanti Kabiraz et al.

Summary: Grain boundaries have adverse effects on bimetallic platinum-cobalt (Pt-Co) nanocatalysts in the oxygen reduction reaction (ORR), as they promote cobalt leaching and cause changes in the surface composition, leading to reduced catalytic activity.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

General Synthesis of Transition-Metal-Based Carbon-Group Intermetallic Catalysts for Efficient Electrocatalytic Hydrogen Evolution in Wide pH Range

Zonghua Pu et al.

Summary: Alloying is an effective strategy for tuning the electronic structures of catalyst materials. Intermetallic compounds, with ordered atomic arrangements, provide a rich platform to study the relationships among chemical composition, atomic structure, electronic structure, and properties. In this study, a series of intermetallic compounds were synthesized through a facile method and demonstrated excellent catalytic activity and durability in the hydrogen evolution reaction.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Applied

Revealing the role of mo doping in promoting oxygen reduction reaction performance of Pt3Co nanowires

Zhiping Deng et al.

Summary: By manipulating ligand effect, structural control, and strain effect, Mo-doped Pt3Co alloy nanowires were prepared as an efficient catalyst for ORR with high specific and mass activity, excellent structural stability, and cyclic durability. Mo dopants modify the electronic structure of Pt and Co, optimizing oxygen-intermediate binding energy and increasing vacancy formation energy, leading to enhanced activity and durability. This work provides a facile methodology and in-depth investigation for future design and optimization.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Physical

High Oxygen Reduction Activity of Pt-Ni Alloy Catalyst for Proton Exchange Membrane Fuel Cells

Jun Gu et al.

Summary: A PtNi/C alloy nano-catalyst with metal loading more than 50 wt.% and core-shell like structure was successfully prepared by ethylene glycol reduction, high temperature annealing, and acid pickling. The electrochemical test results showed that the catalyst had excellent electrochemical activity, and after 30K cycles of accelerated durability test, it still maintained high activity.

CATALYSTS (2022)

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Review Materials Science, Multidisciplinary

Research progress of Fe-N-C catalysts for the electrocatalytic oxygen reduction reaction

Ying Wang et al.

Summary: The oxygen reduction reaction (ORR) is crucial for energy devices. The slow kinetics of ORR necessitates the development of efficient electrocatalysts to replace platinum. Metal-nitrogen-carbon catalysts, particularly Fe-N-C, are considered promising candidates due to their abundant active sites. This review summarizes recent breakthroughs in theoretical and experimental studies on Fe-N-C catalysts, including mechanistic understanding, design strategies, active site classifications, catalytic performance, and applications in energy devices.

SCIENCE CHINA-MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Design of Au Surface-doped PtFe Catalyst to Modulate Oxygen Binding Energy for Highly Efficient Oxygen Reduction Reaction

Junjie Shi et al.

Summary: This study presents a novel catalyst Au-PtFe/C, which improves the activity and durability of the oxygen reduction reaction. By utilizing a synergistic process of microwave reduction, chemical replacement, acid etching, and high temperature annealing, the catalyst exhibits abundant active sites for ORR and demonstrates remarkable performance, showing promise for commercialization in fuel cells.

CHEMISTRYSELECT (2022)

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Article Chemistry, Physical

Atomically dispersed Pt and Fe sites and Pt-Fe nanoparticles for durable proton exchange membrane fuel cells

Fei Xiao et al.

Summary: Researchers have designed a hybrid electrocatalyst consisting of atomically dispersed platinum and iron single atoms, as well as platinum-iron alloy nanoparticles. This electrocatalyst exhibits higher activity and durability in proton exchange membrane fuel cells.

NATURE CATALYSIS (2022)

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Article Chemistry, Physical

Selective CO-to-acetate electroreduction via intermediate adsorption tuning on ordered Cu-Pd sites

Yali Ji et al.

Summary: In this study, a novel copper-palladium intermetallic compound catalyst was developed to enhance the hydrogenation reduction of carbon monoxide, thereby promoting the formation of acetate. The catalyst exhibited high selectivity and efficiency for acetate production, and demonstrated good performance in long-term stability tests.

NATURE CATALYSIS (2022)

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Article Chemistry, Physical

Breaking with the Principles of Coreduction to Form Stoichiometric Intermetallic PdCu Nanoparticles

Jette K. Mathiesen et al.

Summary: By carefully selecting additives in nanoparticle synthesis, the morphology and structure of intermetallic PdCu NPs can be controlled. This study reveals that the formation of stoichiometric intermetallic NPs is not solely determined by standard reduction potential matching and coreduction mechanisms, but also driven by changes in the local chemistry. These findings open up new opportunities to expand the library of intermetallic NPs through synthesis by design.

SMALL METHODS (2022)

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Article Materials Science, Multidisciplinary

Au composition dependent order-disorder transitions of Fe-Pt intermetallic compounds: Experiments and thermodynamic analysis

Yanglin Wang et al.

Summary: The phase equilibria and phase transformations of Fe-Pt-Au alloys were investigated, and it was found that the addition of Au promotes the ordering process. The mechanism behind this phenomenon was analyzed using experiments and thermodynamics.

ACTA MATERIALIA (2022)

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Article Chemistry, Multidisciplinary

Engineering Location and Supports of Atomically Ordered L10-PdFe Intermetallics for Ultra-Anticorrosion Electrocatalysis

Tao Shen et al.

Summary: In this study, yolk-shell L1(0)-PdFe@C nanoreactors were constructed to enhance the anticorrosive performance and activity toward oxygen reduction reaction (ORR). The stability of the nanoreactors during accelerated degradation tests (ADT) was significantly improved, outperforming state-of-the-art Pt/C catalysts. The work provides a strategy to enhance catalyst durability by combining the merits of nanoreactors and ordered intermetallics.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Review Chemistry, Multidisciplinary

Noble-Metal-Based Hollow Mesoporous Nanoparticles: Synthesis Strategies and Applications

Lizhi Sun et al.

Summary: As second-generation mesoporous materials, mesoporous noble metals (NMs) have wide applications in catalysis, sensing, bioimaging, and biotherapy. This review summarizes recent progress in the design, synthesis, and catalytic applications of NM-based hollow mesoporous nanoparticles (HMNs), including five main synthesis strategies. The applications in ethanol oxidation electrocatalysis and hydrogenation reactions are discussed, highlighting the high activity, enhanced stability, and optimal selectivity of NM-based HMNs in (electro)catalysis. Prospects for further research directions are also provided.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Rhombohedral Pd-Sb Nanoplates with Pd-Terminated Surface: An Efficient Bifunctional Fuel-Cell Catalyst

Ying Zhang et al.

Summary: This study develops a novel Pd-Sb hexagonal nanoplate for boosting both cathodic and anodic fuel cell reactions. The Pd8Sb3 nanoplates show enhanced activity towards the oxidation of various alcohols and superior performance in the oxygen reduction reaction. The controllable synthesis of Pd-Sb nanostructures gives significant impetus for the design of high-efficiency electrocatalysts.

ADVANCED MATERIALS (2022)

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Article Multidisciplinary Sciences

Phase diagrams guide synthesis of highly ordered intermetallic electrocatalysts: separating alloying and ordering stages

Wei-Jie Zeng et al.

Summary: In this study, the authors use in-situ high-temperature X-ray diffraction studies to investigate the structural evolution in the synthesis of carbon-supported intermetallic catalysts. They identify a phase-transition-temperature-dependent evolution process and propose a separate alloying/ordering annealing synthetic protocol for the synthesis of highly ordered intermetallic catalysts.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Superior Performance of an Iron-Platinum/Vulcan Carbon Fuel Cell Catalyst

Prabal Sapkota et al.

Summary: This work reports the synthesis of FePt/VC as an effective catalyst for the electrooxidation of molecular hydrogen and the electroreduction of molecular oxygen in proton exchange membrane fuel cells. The catalyst demonstrates superior electrocatalytic activity and stability compared to Pt/VC, resulting in an increase in maximum power density.

CATALYSTS (2022)

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Article Chemistry, Multidisciplinary

Continuous-Flow Reactor Synthesis for Homogeneous 1 nm-Sized Extremely Small High-Entropy Alloy Nanoparticles

Hiroki Minamihara et al.

Summary: This study presents a new method for synthesizing ultrasmall and homogeneous high-entropy alloy nanoparticles (HEA NPs) using a continuous-flow reactor. The obtained HEA NPs exhibit remarkable catalytic activity in hydrogen evolution reaction (HER) and offer a potential platform for mass production of ultrasmall and homogeneous HEA NPs.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

In Situ Mechanistic Insights for the Oxygen Reduction Reaction in Chemically Modulated Ordered Intermetallic Catalyst Promoting Complete Electron Transfer

Soumi Mondal et al.

Summary: This study aims to design an extremely stable but unexplored ordered intermetallic structure and overcome the challenges of alkaline oxygen reduction reaction (ORR) by site-selective platinum substitution to tune the electronic environment of active sites. The experimental results demonstrate that Pt0.2Pd1.8Ge exhibits excellent catalytic performance and maintains activity even after accelerated degradation tests, with improved reaction efficiency by reducing hydrogen peroxide formation.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

A top-down strategy to realize the synthesis of small-sized L10-platinum-based intermetallic compounds for selective hydrogenation

Yu Jin et al.

Summary: In this work, a facile top-down strategy was demonstrated to fabricate Pt-based nanoparticles with ultrasmall feature and tailored structure. The thermal treatment of Cd evaporation under high temperature enables the creation of highly stable intermetallic compounds with different compositions, which display excellent catalytic performance.

NANO RESEARCH (2022)

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Review Chemistry, Physical

Crystal phase engineering of electrocatalysts for energy conversions

Hui Chen et al.

Summary: This review summarizes the theoretical and experimental advances in phase engineering of electrocatalysts. The basic understanding of catalyst crystal phases is introduced, followed by a description of phase-controlled synthesis methods. The wide usage of phase engineering strategy in different kinds of electrocatalytic materials is discussed, with emphasis on establishing reasonable crystal phase-activity relationship. Finally, several future directions for developing more desirable electrocatalysts by rational crystal phase design are proposed.

NANO RESEARCH (2022)

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Review Chemistry, Physical

Progress on nanostructured gel catalysts for oxygen electrocatalysis

Huan Yang et al.

Summary: This article summarizes the applications of gel materials in oxygen electrocatalysis and introduces the synthesis methods of gel materials. The author proposes the outlook for further developing advanced gel oxygen electrocatalysts.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Pd-Sn alloy nanoparticles for electrocatalytic methanol oxidation: Phase evolution from solid solution to intermetallic compounds

Jinna Xue et al.

Summary: Developing efficient catalysts with high activity and durability is crucial for energy conversion in electro-catalytic reactions. The structure difference of hollow-structured nanocrystals of Pd-Sn alloy has been studied using electron microscopy and spectroscopy. Pd3Sn2 IMCs exhibit outstanding activity in methanol oxidation reaction.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Understanding the structure-performance relationship of active sites at atomic scale

Runze Li et al.

Summary: This article discusses the key factors affecting the catalytic performance of metal-based atomically dispersed catalysts and their relationship with the active sites. It first introduces the effectiveness of active site design through coordination effects, then discusses the role of chemical bonds in the active sites and the influence of the spacing of active atoms in intermetallic compounds on catalytic behavior. Additionally, the importance of synergistic effects in catalyst design is emphasized, and the key parameters affecting catalytic performance at the atomic scale are summarized.

NANO RESEARCH (2022)

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Article Nanoscience & Nanotechnology

Graphene-nanopocket-encaged PtCo nanocatalysts for highly durable fuel cell operation under demanding ultralow-Pt-loading conditions

Zipeng Zhao et al.

Summary: The authors report the design and development of ultrathin PtCo nanocatalysts encased in graphene nanopockets, which exhibit excellent electrochemical accessibility and durability under low loading conditions. These catalysts show promising fuel cell performance, making them ideal for reducing fuel cell costs.

NATURE NANOTECHNOLOGY (2022)

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Article Chemistry, Multidisciplinary

Protrusion-Rich Cu@NiRu Core@shell Nanotubes for Efficient Alkaline Hydrogen Evolution Electrocatalysis

Xuan Liu et al.

Summary: In this study, protrusion-rich Cu@NiRu core@shell nanotubes were synthesized using a facile wet chemistry method and employed for hydrogen evolution reaction (HER) in an alkaline environment. The protrusion-like RuNi alloy shells with large surface area and abundant defects optimize the surface electronic structure through electron transfer and are effectively stabilized by the unique 1D hollow structure.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Intermetallic PtFe Electrocatalysts for the Oxygen Reduction Reaction: Ordering Degree-Dependent Performance

Tian-Wei Song et al.

Summary: Platinum-based atomically ordered alloys show superior catalytic activity and durability in proton-exchange-membrane fuel cells. In this study, a series of PtFe catalysts with different ordering degrees but similar particle sizes were prepared. It was found that the ordering degree is positively correlated with the catalyst's activity and durability, which can be attributed to the compressive strain effect and thermodynamic stability of the intermetallic structure.

SMALL (2022)

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Article Chemistry, Physical

Optimizing the Electronic Structure of Ordered Pt-Co-Ti Ternary Intermetallic Catalyst to Boost Acidic Oxygen Reduction

Weiyue Zhao et al.

Summary: This study demonstrates the development of a highly active and durable Pt-based ternary catalyst for improving the sluggish oxygen reduction reaction in fuel cells. The catalyst shows faster reaction kinetics and minimal activity loss compared to commercial catalysts, and its superior performance has been verified in practical applications.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

Core-Shell CuPd@NiPd Nanoparticles: Coupling Lateral Strain with Electronic Interaction toward High-Efficiency Electrocatalysis

Danye Liu et al.

Summary: Geometric structure and chemical composition are critical factors determining the electronic properties of metal catalysts. The wet-chemistry method used in this study successfully constructed core-shell nanoentities with enhanced catalytic activity through lattice strain and electronic interaction. The optimized core-shell nanoparticles exhibited excellent catalytic performance in an alkaline medium.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

Ordered Mesoporous Intermetallic Trimetals for Efficient and pH-Universal Hydrogen Evolution Electrocatalysis

Yanzhi Wang et al.

Summary: Ordered MI-PtZnCo trimetals demonstrate excellent electrocatalytic performance for hydrogen evolution reaction (HER) in alkaline media, with high activity and stability. They also show high activity and stability for HER electrocatalysis in a wide pH range. The electron-rich surface of Co in MI-PtZnCo trimetals synergistically accelerates Tafel kinetics and enhances their catalytic activity and stability.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Physical

ZIF-Mg(OH)2 Dual Template Assisted Self-Confinement of Small PtCo NPs as Promising Oxygen Reduction Reaction in PEM Fuel Cell

Zhenyu Chen et al.

Summary: A self-confined method for synthesizing highly dispersed PtCo-alloy on Co, N co-doped mesoporous carbon (PCN-MC) was developed via a dual-template strategy. By adjusting the feeding-ratio, the alloying degree and nanoparticle size were optimized to achieve outstanding oxygen reduction reaction activity and durability.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Physical

An Efficient Electrocatalyst (PtCo/C) for the Oxygen Reduction Reaction

Bingxue Hou et al.

Summary: This study presents a simple modified polyol method for preparing carbon-supported PtCo nanoparticles with similar particle size and activity to commercial catalysts. The findings are of great significance for the synthesis of PtCo/C catalysts in polymer electrolyte membrane fuel cells.

CATALYSTS (2022)

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Article Materials Science, Multidisciplinary

Improvement of electrocatalytic alcohol oxidation by tuning the phase structure of atomically ordered intermetallic Pd-Sn nanowire networks

Zhengshuai Cao et al.

Summary: This study reports a method for preparing Pd-Sn OICs with adjustable molar ratios of Pd and Sn. Different phases of OICs can be synthesized by co-reduction reactions, and pure phases can be transformed into mixed phases by altering the feed ratio. It is found that a specific phase of OICs exhibits a large electrochemically active surface area and excellent electrocatalytic performance due to its optimized electronic structure.

SCIENCE CHINA-MATERIALS (2022)

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Article Chemistry, Physical

A kinetic descriptor for the electrolyte effect on the oxygen reduction kinetics on Pt(111)

Mingchuan Luo et al.

Summary: This study demonstrates the unexpected effect of non-specifically adsorbed anions on the kinetics of oxygen reduction reaction (ORR) on a Pt electrode, which is different from the usual ORR descriptor. A voltammetry-accessible descriptor is proposed to track the dependence of ORR rates on electrolytes, and a model is proposed to explain the different trends of ORR rates under different conditions.

NATURE CATALYSIS (2022)

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Article Nanoscience & Nanotechnology

Light-Enhanced Catalytic Activity of Intermetallic PdCd Nanocubes for Suzuki Coupling

Han-Tang Jhao et al.

Summary: In this study, intermetallic PdCd nanocubes with a face-centered tetragonal phase were synthesized, which not only preserved the catalytic activity but also exhibited an increase in catalytic activity upon illumination. The alloyed structure of the nanocubes had the maximum number of active Pd sites, and the increase in catalytic activity can be attributed to an increase in the number of s-band free electrons upon doping of Cd atoms.

ACS APPLIED NANO MATERIALS (2022)

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Review Chemistry, Multidisciplinary

Confinement Engineering of Electrocatalyst Surfaces and Interfaces

Wei Li et al.

Summary: The electrocatalytic performance of nanomaterials can be enhanced by fine-tuning the coordination environment and number of low-coordination atoms. Confinement engineering, which modulates electron transfer properties, atomic arrangement, and molecular structure in a confined region, is an effective strategy for precise chemical synthesis of electrocatalysts. It not only alters the coordination environments to adjust the formation mechanism of active centers, but also regulates the physicochemical properties of electrocatalysts. This optimization leads to improved performance in terms of activity, stability, and selectivity by optimizing the nucleation, transportation, and stabilization of intermediate species.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Activating C-H Bonds by Tuning Fe Sites and an Interfacial Effect for Enhanced Methanol Oxidation

Sheng Huang et al.

Summary: In this study, a simple two-step strategy was employed to fabricate α-Fe2O3/CoFe2O4 heterostructures for methanol conversion. The optimized sample, ZnFeCo-2, exhibited excellent performance in terms of photocurrent density, Faraday efficiency, and long-term stability. Density functional theory calculations revealed that the heterostructured α-Fe2O3/CoFe2O4 effectively improved methanol conversion efficiency by lowering adsorption, activation, and desorption energies.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Heterogeneous-Interface-Enhanced Adsorption of Organic and Hydroxyl for Biomass Electrooxidation

Peng Zhou et al.

Summary: The CuO-PdO heterogeneous interface was successfully constructed, resulting in an advanced onset-potential and higher current density for the electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF). The introduction of PdO enhanced the adsorption capacity of the organic molecule and promoted the adsorption and activation of OH- species at the CuO-PdO interface.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

High-Entropy Intermetallic PtRhBiSnSb Nanoplates for Highly Efficient Alcohol Oxidation Electrocatalysis

Wen Chen et al.

Summary: The synthesis of high-entropy alloy nanoplates with five metals was achieved, demonstrating remarkable electrocatalytic activity for alcohol oxidation reactions. The introduction of the fifth metal Rh improved the electron-transfer efficiency, while the synergistic protections from Bi, Sn, and Sb sites contributed to the stable electronic structures of the active sites. This work represents significant research advances in developing well-defined high-entropy alloys.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Pd-Sb Rhombohedra with an Unconventional Rhombohedral Phase as a Trifunctional Electrocatalyst

Bingyan Xu et al.

Summary: This study successfully synthesized a new class of Pd-based nanostructures with unconventional crystal phases and demonstrated their enhanced electrocatalytic activity in ethanol oxidation reaction, oxygen reduction reaction, and non-aqueous Li-air batteries.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Platinum-Gold Alloy Catalyzes the Aerobic Oxidation of Formic Acid for Hydrogen Peroxide Synthesis

Jinxing Chen et al.

Summary: Researchers have developed a new alloy material, Pt-Au, for synthesizing hydrogen peroxide through the oxidation of formic acid, mimicking the catalytic function of natural enzymes. The alloy exhibits higher catalytic activity and can be used for efficient hydrogen peroxide production, as well as oxidation reactions in an acidic environment.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Physical

Engineering ordered vacancies and atomic arrangement over the intermetallic PdM/CNT (M = Pb, Sn, In) nanocatalysts for synergistically promoting electrocatalysis N2 fixation

Zuochao Wang et al.

Summary: In this work, small-sized intermetallic compounds with ordered vacancies have been prepared successfully for the first time. The catalyst OVs-Pd3Pb-2 shows the best nitrogen reduction performance, and the synergy mechanism has been elucidated by in situ experiments and theoretical calculations.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Engineering, Environmental

Mutual-modification effect in adjacent Pt nanoparticles and single atoms with sub-nanometer inter-site distances to boost photocatalytic hydrogen evolution

Manyi Gao et al.

Summary: This study reports a Pt@PtSAs co-catalyst on polymeric carbon nitride nanosheets, which exhibits mutual-modification effect and enhances catalytic activity and photocatalytic H2 generation rate.

CHEMICAL ENGINEERING JOURNAL (2022)

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Review Chemistry, Multidisciplinary

Intermetallic Nanocrystals: Seed-Mediated Synthesis and Applications in Electrocatalytic Reduction Reactions

Jingchun Guo et al.

Summary: This review summarizes the preparation of IMNCs by seed-mediated synthesis in the liquid phase and their applications in electrocatalytic reduction reactions. The wet chemistry method shows great potential in precise control over the size, shape, composition, structure, and exposed crystal facet of IMNCs.

CHEMISTRY-A EUROPEAN JOURNAL (2022)

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Article Chemistry, Inorganic & Nuclear

Ordered Intermetallic PtCu Catalysts Made from Pt@Cu Core/Shell Structures for Oxygen Reduction Reaction

Xuxu Ye et al.

Summary: Platinum-based ordered intermetallic compounds are promising low-Pt catalysts for the oxygen reduction reaction (ORR) in fuel cells. The synthesis of ordered intermetallic catalysts usually requires high-temperature annealing, which leads to sintering of catalysts and reduced activity. This study presents a new strategy to synthesize PtCu-ordered intermetallic catalysts using Pt@Cu core/shell nanoparticles. The core/shell structure avoids diffusion of Cu atoms to Pt nanoparticles, resulting in higher ordering degrees of PtCu nanoparticles. The catalysts prepared by this strategy exhibit higher mass and specific activity compared to the traditional wet-impregnation method. A positive correlation between ORR activity and the ordering degree of PtCu nanoparticles is identified.

INORGANIC CHEMISTRY (2022)

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Article Chemistry, Physical

Tuning oxygen reduction reaction activity via structure orientation and surface arrangement: A study on ordered PtCo/C catalysts

Huichi Zhong et al.

Summary: A facile and general strategy for preparing highly dispersed PtCo/C catalysts with a Pt-enriched surface is reported. The thermal treatment of the PtCo/C catalyst changes the structure orientation from disordered to ordered phase. The ordered PtCo/C intermetallic catalyst exhibits significantly enhanced electrocatalytic activity and durability in oxygen reduction reaction.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Analytical

Annealing-temperature-dependent relation between alloying degree, particle size, and fuel cell performance of PtCo catalysts

Wei-Jie Zeng et al.

Summary: This study investigates the impact of alloying degree and annealing temperature on the activity and surface area of PtCo catalysts. It was found that the optimal PtCo catalyst with high activity and large power density was achieved at a medium annealing temperature.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2022)

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Article Chemistry, Analytical

Structural evolution of PtCu nanoframe for efficient oxygen reduction reactions

Gang Ma et al.

Summary: This paper reports the synthesis of high-active PtCu alloy nanoframes and investigates their electrocatalytic performance for oxygen reduction reactions. The results show that the alloy PtCu nanoframes exhibit higher activity and stability compared to commercial Pt/C.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

High-Entropy Intermetallics Serve Ultrastable Single-Atom Pt for Propane Dehydrogenation

Yuki Nakaya et al.

Summary: In this study, a new class of heterogeneous catalysts using high-entropy intermetallics (HEIs) was reported, which can significantly enhance the catalytic stability of propylene and suppress the side reactions.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Pt Atomic Layers with Tensile Strain and Rich Defects Boost Ethanol Electrooxidation

Yuanjun Chen et al.

Summary: This study reports a highly efficient and stable electrocatalyst with defect-rich Pt atomic layers coating an ordered Pt3Sn intermetallic core. The synergetic controls of surface and strain engineering lead to remarkable enhancement on ethanol electrooxidation performance, as well as outstanding durability.

NANO LETTERS (2022)

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Article Chemistry, Multidisciplinary

Metal-Metal Oxide Catalytic Interface Formation and Structural Evolution: A Discovery of Strong Metal-Support Bonding, Ordered Intermetallics, and Single Atoms

Zihao Yan et al.

Summary: This study investigates the interactions between metal and metal oxide, revealing different behaviors among Pd, Pt, and Au nanoparticles coated with FeOx. The results show strong interactions between Pd and FeOx, while Pt forms ordered PtFe intermetallics and Au does not show strong bonding with FeOx.

NANO LETTERS (2022)

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Article Chemistry, Multidisciplinary

Unravelling the critical role of surface Nafion adsorption in Pt-catalyzed oxygen reduction reaction by in situ electrical transport spectroscopy

Yamei Sun et al.

Summary: Solid-state ionic conductor is an essential component in electrochemical energy conversion devices. Nafion, widely used as a proton-conducting polymer and electrode stabilizer, plays a crucial role in electrochemical devices operating under acidic conditions. In this study, in situ electrical transport spectroscopy (ETS) was employed to investigate the adsorption of Nafion on Pt catalysts and its effects on oxygen reduction reaction (ORR) intermediates. The results show that specific adsorption of Nafion increases the coverage of oxygen intermediates with weaker adsorption strength, which in turn influences the reaction selectivity.

SCIENCE CHINA-CHEMISTRY (2022)

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Article Multidisciplinary Sciences

Ultrafine nanoporous intermetallic catalysts by high-temperature liquid metal dealloying for electrochemical hydrogen production

Ruirui Song et al.

Summary: This study presents the fabrication of nanoporous intermetallic catalysts via liquid metal dealloying, which exhibit high electrocatalytic activity and durability in hydrogen production. The research sheds light on the intermetallic effect in dealloying, providing new insights for the development of advanced intermetallic catalysts for energy applications.

NATURE COMMUNICATIONS (2022)

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Article Multidisciplinary Sciences

Small molecule-assisted synthesis of carbon supported platinum intermetallic fuel cell catalysts

Tian-Wei Song et al.

Summary: This study reports a small molecule-assisted impregnation approach for the general synthesis of intermetallic catalysts. The molecular additives containing heteroatoms can be converted into heteroatom-doped graphene layers during high-temperature annealing, effectively preventing alloy sintering and ensuring the formation of small-sized intermetallic catalysts.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

CoSe2 Subnanometer Belts with Se Vacancies and Ni Substitutions for the Efficient Electrosynthesis of High-Value-Added Nitriles Coupled with Hydrogen Generation

Shenzhen Xu et al.

Summary: The electrooxidation of organic amines to high-value-added nitriles coupled with hydrogen generation can be greatly enhanced by using CoSe2/Ni-SVs SBs catalysts. This study demonstrates the optimized adsorption behavior and accelerated dehydrogenation kinetics of the CoSe2/Ni-SVs SBs catalysts and their wide applicability and high efficiency in amine oxidation reactions.

ACS CATALYSIS (2022)

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Article Chemistry, Multidisciplinary

Pt-Fe-Cu Ordered Intermetallics Encapsulated with N-Doped Carbon as High-Performance Catalysts for Oxygen Reduction Reaction

Jiayi Qin et al.

Summary: Nitrogen-modified carbon-encapsulated Pt-Fe-Cu ordered intermetallic nanoparticles show superior activity and chemical stability in acidic ORR.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2022)

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Review Materials Science, Multidisciplinary

Review-Structural Design and Dynamic Evolution of Intermetallic Compound Nanocatalysts Revealed by Environmental TEM

Kun Wang et al.

Summary: Nanocrystals are of great importance in material sciences and chemical industries. Designing nanocrystals with desired structures and properties is a challenging task. Intermetallic compounds have gained increasing attention as catalysts, thanks to their unique geometrical and electronic structures that enable high selectivity and stability. Precise structural control during the synthesis of intermetallic nanocrystals is crucial in catalysis.

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY (2022)

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Article Electrochemistry

Theoretical Investigation of the Oxygen Reduction Reaction over Platinum Catalysts Supported by Multi-Edged Vertically Aligned Carbon Nanofiber for Electrocatalyst Preparation

Jiayi Xu et al.

Summary: This study investigates the origin and mechanism of the oxygen reduction reaction (ORR) activity of platinum catalysts on vertically aligned carbon nanofibers (VACNFs) using a multiscale modeling approach. The results show that as the size of platinum nanoparticles decreases, the percentage of low coordination sites increases, leading to a decrease in ORR activity. Additionally, the binding energies of OOH and OH on VACNF-supported platinum nanoparticles are significantly higher than on Pt (111), resulting in a lower limiting potential for the ORR.

CHEMELECTROCHEM (2022)

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Review Energy & Fuels

High-Entropy Materials for Water Electrolysis

Xiaomin Xu et al.

Summary: This article presents the application of high-entropy materials in water electrolysis, focusing on their role in catalyzing water-splitting reactions. The article summarizes various design strategies for high-entropy materials, including controlling size and shape, constructing porous structures, engineering defects, etc., to enhance catalytic performance. Additionally, it points out the challenges faced in the field and suggests future perspectives for development.

ENERGY TECHNOLOGY (2022)

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Article Chemistry, Physical

Facile Solid-Phase Method for Preparing a Highly Active and Stable PtZn-Based Oxygen Reduction/Hydrogen Evolution Bifunctional Electrocatalyst: Effect of Bi-Facet Lattice Strain on Catalytic Activity

Wei Yan et al.

Summary: A uniform disordered PtZn alloy (d-PtZn) on N-doped carbon (NC) nanosheets, prepared by pyrolyzing bimetallic Pt/Zn polyphthalocyanine, exhibits superior activity and stability for ORR and HER. The excellent activity is attributed to lattice strain, enabling efficient intermediates transportation.

ACS APPLIED ENERGY MATERIALS (2022)

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Article Chemistry, Physical

Ternary PtZnCu Intermetallic Nanoparticles as an Efficient Oxygen Reduction Electrocatalyst for Fuel Cells with Ultralow Pt Loading

Tao Liu et al.

Summary: Developing efficient methods for mass production of Pt-based nanoparticles (NPs) as electrocatalysts is crucial for advancing the commercialization of proton exchange membrane fuel cells (PEMFCs). This study proposes an environmentally friendly approach to prepare PtZnCu intermetallic NPs attached to an N-doped carbon substrate, with potential for large-scale industrial production. The optimized catalyst exhibits impressive performance, with a half-wave potential of 0.93 V and an activity of 0.95 A mgPt-1 at 0.9 V for the oxygen reduction reaction (ORR) in an acidic solution. The assembled PEMFCs show outstanding performance, achieving a power density of 1.1 W cm-2 under an H2/air atmosphere, with Pt loading amount only one seventh of commercial Pt/C.

ACS APPLIED ENERGY MATERIALS (2022)

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Review Electrochemistry

Recent Progress in High Entropy Alloys for Electrocatalysts

Kun Wang et al.

Summary: This paper reviews the recent progress on the preparation methods, characterization techniques, electrocatalytic applications and functional mechanisms of high entropy alloy-based electrocatalysts for hydrogen evolution, oxygen evolution and oxygen reduction reactions. It discusses the synthesis approaches for high entropy alloys and their materials characterizations. It also summarizes the electrocatalytic performance of high entropy alloys for various electrocatalytic reactions and proposes further research directions.

ELECTROCHEMICAL ENERGY REVIEWS (2022)

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Article Nanoscience & Nanotechnology

Low-Loading Sub-3 nm PtCo Nanoparticles Supported on Co-N-C with Dual Effect for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cells

Pan Guo et al.

Summary: Developing low-loading Pt-based catalysts with glorious catalytic performance can significantly advance the commercialization of proton exchange membrane fuel cells. In this report, a hybrid catalyst PtCo/Co-N-C is proposed, which exhibits extraordinary performance and durability, making it suitable for fuel cells.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Physical

Synthesis of a Hexagonal-Phase Platinum-Lanthanide Alloy as a Durable Fuel-Cell-Cathode Catalyst

Shi-Long Xu et al.

Summary: In this study, a carbon-supported intermetallic catalyst was synthesized using an impregnation method, which increased the alloying of Pt and Ln by increasing the surface area for hydrogen spillover, resulting in the formation of a favorable hexagonal Pt(5)Ln phase. The catalyst exhibited high catalytic activity, improved power density, and durability in fuel cells.

CHEMISTRY OF MATERIALS (2022)

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Review Chemistry, Inorganic & Nuclear

Recent progress in ultrafine 3D Pd-based nanocubes with multiple structures for advanced fuel cells electrocatalysis

Kewang Zhang et al.

Summary: Recently, noble metal-based nanocatalysts, especially Pd-based nanocubes, have shown excellent electrocatalytic performance in direct alcohol fuel cells (DAFC). However, a comprehensive summary of the synthesis strategies and electrocatalytic ability enhancement of Pd-based nanocubes is still lacking. This review provides an in-depth introduction to DAFC and summarizes the synthesis pathways and enhancement strategies of Pd-based nanocubes. The opportunities and challenges of 3D Pd-based nanocubes in the field of electrocatalysis are also discussed.

COORDINATION CHEMISTRY REVIEWS (2022)

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Article Chemistry, Multidisciplinary

A trade-off between ligand and strain effects optimizes the oxygen reduction activity of Pt alloys

Regina M. Kluge et al.

Summary: This study focuses on the catalytic design of oxygen reduction reaction, determining the composition and geometric configuration of optimal catalytic active sites through a combination of experiments and models. The lattice compression resulting from alloying Pt with 3d transition metals gradually increases the generalized coordination number of surface Pt atoms, making (111) terraces highly active.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Molybdenum-doped ordered L10-PdZn nanosheets for enhanced oxygen reduction electrocatalysis

Jiashun Liang et al.

Summary: A new class of ultrathin structurally ordered Mo-doped L1(0)-PdZn nanosheets with curved geometry and abundant defects/lattice distortions have been reported as efficient oxygen reduction electrocatalysts. The Mo-doping and ordered L1(0) structure significantly modify the electronic structure, leading to excellent ORR activity and stability.

SUSMAT (2022)

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Review Chemistry, Multidisciplinary

Anion-exchange membrane water electrolyzers and fuel cells

Yaxiong Yang et al.

Summary: This review provides a comprehensive overview of the fundamentals, technological progress, and future perspectives on AEMWEs and AEMFCs. It analyzes the market development status, key components, working management, and operation monitoring of these technologies, and identifies aspects that need further research.

CHEMICAL SOCIETY REVIEWS (2022)

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Review Chemistry, Multidisciplinary

Carbon-based catalyst supports for oxygen reduction in proton-exchange membrane fuel cells

Shahid Zaman et al.

Summary: This review summarizes the recent progress in carbon-based catalyst supports and highlights the crucial role of modified carbon supports in oxygen reduction electrocatalysis. The findings show that support modification is critical for enhanced metal-support interaction and durability.

TRENDS IN CHEMISTRY (2022)

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Article Materials Science, Multidisciplinary

Atomic order transition of TiNiPt nanoparticles supported on carbon nanotubes for the stable hydrogen evolution reaction

Mengni Wei et al.

Summary: In this study, atomically ordered and disordered Ti50NixPt50-x/CNT catalysts were prepared and it was found that the ordered samples exhibited better HER activity and stability in alkaline electrolytes, as well as good performance in acidic electrolytes.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

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Article Materials Science, Multidisciplinary

A sequential hydrogen-adsorption-assisted bond-weakening strategy for preparing sub-2-nm ordered Pt alloy nanocrystals

Xin Feng et al.

Summary: By using a sequential hydrogen-adsorption-assisted bond-weakening strategy, highly active sub-2 nm Pt-based alloy nanocrystals for oxygen reduction reaction (ORR) can be synthesized, leading to a significant improvement in the efficiency of the reaction.

MATTER (2022)

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Article Chemistry, Physical

Ultra-stable Pt5La intermetallic compound towards highly efficient oxygen reduction reaction

Siyuan Zhu et al.

Summary: This study reports the synthesis of a Pt5La intermetallic compound, which exhibits enhanced activity and excellent stability. The catalyst shows high half wave potential and mass activity, and performs superior stability during accelerated stressed test.

NANO RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Low-temperature N-anchored ordered Pt3Co intermetallic nanoparticles as electrocatalysts for methanol oxidation reaction

Yanru Li et al.

Summary: By uniformly anchoring small-sized and structurally ordered Pt3Co intermetallic nanoparticles onto nitrogen-doped carbon nanotubes via a low-temperature N-anchoring method, the electrocatalytic activity and stability for the methanol oxidation reaction (MOR) in a direct methanol fuel cell are significantly improved. The introduction of nitrogen doping enhances the catalytic activity of Pt3Co nanoparticles and the binding energy between Pt3Co nanoparticles and carbon nanotubes, leading to enhanced MOR reaction kinetics.

NANOSCALE (2022)

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Article Materials Science, Multidisciplinary

Synthesis of Sub-4 nm Rh-Based Intermetallic Catalyst Libraries by Sulfur-Anchoring Strategy

Peng Yin et al.

Summary: Atomically ordered intermetallic compounds (IMCs) have been synthesized with average particle sizes of < 4 nm by a general synthesis strategy based on the strong chemical interaction between metal and sulfur. These Rh-based IMC catalysts showed enhanced catalytic performance for nitroarene hydrogenation, highlighting the advantages of atomically order structure of IMCs for the chemoselective molecular recognition of nitro groups through geometric and electronic effects.

ACS MATERIALS LETTERS (2022)

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Article Chemistry, Physical

Intermetallic PdZn nanoparticles loaded on deficient TiO2 nanosheets as a support: a bifunctional electrocatalyst for oxygen reduction in PEMFCs and the glycerol oxidation reactions

Keerti M. Naik et al.

Summary: This study explores a simple and flexible method to synthesize an ORR catalyst with high catalytic activity. The developed PdZn/TiO2-x NS catalyst exhibits better ORR activities in both acidic and alkaline solutions at room temperature, with higher ECSA. It also shows excellent stability and high power density in fuel cell performance.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Materials Science, Multidisciplinary

Microwave Heating of Nanocrystals for Rapid,Low-Aggregation Intermetallic Phase Transformations

Daniel J. Rosen et al.

Summary: The study demonstrates that the use of microwave radiation can induce intermetallic phase transformation in Cu-doped Pt-Co nanocrystals, reducing nanocrystal aggregation and improving mass activity for the oxygen reduction reaction. This method has the potential to enhance electrochemical catalytic activity while maintaining high stability.

ACS MATERIALS LETTERS (2022)

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Article Chemistry, Physical

Synergistic engineering of shell thickness and core ordering to boost the oxygen reduction performance

Lijie Zhong et al.

Summary: In this study, we theoretically identified ten promising catalysts by synergistically tailoring the skin thickness and substrate chemical ordering on Pt(111) surface, which can simultaneously achieve weak adsorption and strong cohesion. This discovery provides a new paradigm for the rational design of promising cathodic catalysts.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

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Review Chemistry, Multidisciplinary

Challenges of modeling nanostructured materials for photocatalytic water splitting

Bipasa Samanta et al.

Summary: Understanding the water splitting mechanism in photocatalysis is crucial for producing clean fuel in the future. Different theoretical methods at various scales have strengths and drawbacks, and a combination of methods is needed to model complex nano-photocatalysts accurately.

CHEMICAL SOCIETY REVIEWS (2022)

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Review Multidisciplinary Sciences

Wet-chemical synthesis of two-dimensional metal nanomaterials for electrocatalysis

Zijian Li et al.

Summary: This review provides a brief overview of the recent advances in the wet-chemical synthesis of 2D metal nanomaterials and illustrates their catalytic performances in various electrochemical reactions. The current challenges and perspectives on preparing high-performance 2D metal electrocatalysts are summarized.

NATIONAL SCIENCE REVIEW (2022)

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Article Chemistry, Multidisciplinary

Effect of the Ag evolution process on ordering the transition for L10-FePt nanoparticles synthesized by Ag addition

Dong Zhao et al.

Summary: In this work, L1(0)-FePt nanoparticles with high coercivity and ordering degree were successfully synthesized by adding Ag. The evolution process of Ag in the ordering transition was investigated, and it was found that the diffusion of Ag played a significant role in the ordering rearrangement of Fe and Pt atoms, resulting in the formation of a highly ordered structure.

NEW JOURNAL OF CHEMISTRY (2022)

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Review Chemistry, Physical

Nanoscale Design of Pd-Based Electrocatalysts for Oxygen Reduction Reaction Enhancement in Alkaline Media

Ming Zhou et al.

Summary: This review article discusses the mechanisms of oxygen reduction reaction (ORR) of palladium (Pd)-based electrocatalysts in alkaline media and various strategies for designing high-performance Pd-based catalysts. It also provides insights into future challenges and research directions in the rational design and controlled synthesis of Pd-based ORR electrocatalysts.

SMALL STRUCTURES (2022)

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Article Materials Science, Multidisciplinary

Twelve-Component Free-Standing Nanoporous High-Entropy Alloys for Multifunctional Electrocatalysis

Tingting Yu et al.

Summary: Nanostructured high-entropy alloys with tunable compositions have shown enhanced catalytic activities in electrochemical reactions. The multifunctional catalytic performance of these alloys could lead to significant advancements in water splitting, rechargeable batteries, and other energy applications.

ACS MATERIALS LETTERS (2022)

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Review Chemistry, Multidisciplinary

Low-PGM and PGM-Free Catalysts for Proton Exchange Membrane Fuel Cells: Stability Challenges and Material Solutions

Lei Du et al.

Summary: Fuel cells are gaining popularity as a clean energy technology, but challenges in cost reduction and integration of low-PGM catalysts remain significant barriers to their development.

ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Noble-Metal Nanocrystals with Controlled Shapes for Catalytic and Electrocatalytic Applications

Yifeng Shi et al.

Summary: The successful synthesis of noble-metal nanocrystals with controlled shapes has provided opportunities for manipulating their physicochemical properties and optimizing their advantages in various applications. Particularly in heterogeneous catalysis and surface science, the availability of these new nanomaterials has led to significant enhancements in catalytic activity and/or selectivity, as well as reduction in materials cost.

CHEMICAL REVIEWS (2021)

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Article Chemistry, Physical

Pt1.4Ni(100) Tetrapods with Enhanced Oxygen Reduction Reaction Activity

Liyuan Chen et al.

Summary: The study proposes a simple and mild approach to prepare Pt1.4Ni tetrapods with predominantly (100) facets, demonstrating superior electrocatalytic activity despite the large proportion of (100) facets. Density function theory calculations suggest that the incorporation of Ni weakens Pt-OH overbinding effect on the (100) facets, promoting hydrogenation of *OH, which leads to higher activity.

CATALYSIS LETTERS (2021)

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Review Chemistry, Physical

Review on water management methods for proton exchange membrane fuel cells

X. R. Wang et al.

Summary: Managing water content in PEMFCs is crucial, as both excess or lack of water can impact performance and lifespan. Monitoring water flow and accumulation is an effective way to determine the situation.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Multidisciplinary Sciences

Spiny Pd/PtFe core/shell nanotubes with rich high-index facets for efficient electrocatalysis

Lu Tao et al.

Summary: The performance of fuel-cell related electrocatalysis heavily depends on the morphology, size and composition of the catalyst. The synthesis of Pt-based catalyst with high-index facets and hollow interiors can significantly enhance catalysis efficiency. The new catalyst, spiny Pd/PtFe core/shell nanotubes, demonstrates remarkable activity and stability in fuel-cell and alcohol oxidation reactions.

SCIENCE BULLETIN (2021)

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Review Chemistry, Multidisciplinary

Noble-Metal Based Random Alloy and Intermetallic Nanocrystals: Syntheses and Applications

Ming Zhou et al.

Summary: Random alloy and intermetallic nanocrystals exhibit unique physicochemical properties, making them ideal models for structure-to-property studies and finding applications in electrocatalysis, photocatalysis, magnetism, etc. Scientific research has shown significant interest in these nanocrystals and advancements have been made in synthetic principles and strategies.

CHEMICAL REVIEWS (2021)

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Review Chemistry, Multidisciplinary

In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy

Janis Timoshenko et al.

Summary: X-ray absorption spectroscopy (XAS) is a crucial method for investigating the structure and composition of heterogeneous catalysts, revealing the nature of active sites and establishing links between structural motifs, local electronic structure, and catalytic properties. Recent advancements in instrumentation and data analysis approaches for deciphering X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra have been discussed, with emphasis on applications in the field of heterogeneous catalysis, particularly in electrocatalysis.

CHEMICAL REVIEWS (2021)

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Article Chemistry, Multidisciplinary

Atomic Structure Evolution of Pt-Co Binary Catalysts: Single Metal Sites versus Intermetallic Nanocrystals

Xing Li et al.

Summary: The thermally driven structure evolution of Pt-Co binary catalyst systems was investigated, revealing the crucial roles of pre-doping CoN4 sites in carbon supports and the initial Pt NP sizes in forming either Pt3Co intermetallics or single Pt/Co metal sites.

ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Building Durable Multimetallic Electrocatalysts from Intermetallic Seeds

Sandra L. A. Bueno et al.

Summary: The research group has achieved stabilization of Pt alloy nanoparticles against non-noble metal leaching, enhancing their durability and electrocatalytic performance. By utilizing core@shell structure, surface alloy composition, and shape control, the catalytic performance of nanoparticles can be tuned, leading to the preparation of highly durable catalysts with different alloy compositions.

ACCOUNTS OF CHEMICAL RESEARCH (2021)

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Article Nanoscience & Nanotechnology

Synthesis of Structurally Stable and Highly Active PtCo3 Ordered Nanoparticles through an Easily Operated Strategy for Enhanced Oxygen Reduction Reaction

Sihao Wang et al.

Summary: This study introduces a facile synthetic method for producing a small-sized, low-Pt content ordered PtCo3/C catalyst for oxygen reduction reaction, which exhibits efficient electrocatalytic performance and superior stability compared to commercial Pt/C.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Materials Science, Multidisciplinary

Microstructures and Properties of High‐Entropy Materials: Modeling, Simulation, and Experiments

Jia Li et al.

ADVANCED ENGINEERING MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Alloyed Palladium-Silver Nanowires Enabling Ultrastable Carbon Dioxide Reduction to Formate

Na Han et al.

Summary: Alloying palladium with silver significantly enhances the electrocatalytic stability, allowing for the preparation of palladium-silver alloy nanowires with outstanding performance for selective formate production. These nanowires exhibit impressive long-term stability due to enhanced CO tolerance and selective stabilization of key reaction intermediates.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

High-Entropy-Alloy Nanoparticles with Enhanced Interband Transitions for Efficient Photothermal Conversion

Yixing Li et al.

Summary: A novel high-entropy alloy FeCoNiTiVCrCu nanoparticle with exceptional broadband optical absorption and high conversion efficiency has been developed, showing over 96% average absorbance across the solar spectrum. The nanoparticle-based solar steam generator exhibits over 98% efficiency under one sun irradiation and a high evaporation rate of 2.26 kg m(-2) h(-1) due to its excellent full light capture and ultrafast local heating capabilities.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Exclusive Strain Effect Boosts Overall Water Splitting in PdCu/Ir Core/Shell Nanocrystals

Menggang Li et al.

Summary: In this study, precise synthesis of PdCu/Ir core/shell nanocrystals was reported, which significantly boosted oxygen evolution reaction (OER) through the exclusive strain effect. The compressive strain in the Ir shell downshifted the d-band center and weakened the binding of the intermediates, leading to enhanced OER activity. The strained nanocrystals also exhibited improved hydrogen evolution reaction (HER) activity, making them excellent catalysts for overall water-splitting electrocatalysis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Structural engineering of Fe-doped Ni2P nanosheets arrays for enhancing bifunctional electrocatalysis towards overall water splitting

Menggang Li et al.

Summary: By developing a structural engineering strategy for Fe-doped Ni2P nanosheets arrays, enhanced electrocatalytic performance was achieved for both oxygen evolution and hydrogen evolution reactions. The increased electrochemical active sites and strong electronic effect derived from Fe-doping contribute to the superior overall water splitting performance.

APPLIED SURFACE SCIENCE (2021)

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Article Chemistry, Physical

Structurally ordered PtFe intermetallic nanocatalysts toward efficient electrocatalysis of methanol oxidation

Yao Nie et al.

Summary: By using thermal interdiffusions under a removable NaCl cover, pure Pt nanoparticles can be easily converted into size-controlled PtFe ordered intermetallic nanoparticles, while disordered nanoparticles can be obtained by adjusting the feeding contents of Fe precursors. The ordered PtFe catalyst shows higher activity, stability and anti-CO poisoning capability compared to disordered PtFe and commercial Pt/C, due to the stronger strain, ligand, and synergistic effect between Pt and Fe.

APPLIED SURFACE SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Computational Methods in Heterogeneous Catalysis

Benjamin W. J. Chen et al.

Summary: Computational heterogeneous catalysis shows great promise for designing and discovering novel catalysts, with recent advances in electronic structure methods, atomistic catalyst models, and microkinetic modeling bridging the gap between nanoscale insights and macroscale experimental data. Remaining challenges include improving model accuracy and addressing discrepancies between experimental and computational results.

CHEMICAL REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Noble-Metal Nanoframes and Their Catalytic Applications

Tung-Han Yang et al.

Summary: The review evaluates research efforts in the design and rational synthesis of noble-metal nanoframes for catalytic applications, discussing their unique characteristics, synthetic strategies and controls, and presenting case studies elucidating synthesis mechanisms and performance in catalysis.

CHEMICAL REVIEWS (2021)

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Review Energy & Fuels

Progress and challenges: Review for direct liquid fuel cell

Norazuwana Shaari et al.

Summary: DLFCs have superior energy density and small fuel container size, but face challenges such as expensive catalysts and fuel security. Further research is needed to improve performance and market penetration.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2021)

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Review Chemistry, Inorganic & Nuclear

Pd-based intermetallic nanocrystals: From precise synthesis to electrocatalytic applications in fuel cells

Sumei Han et al.

Summary: Pd-based intermetallic nanocrystals (INCs) have gained attention as electrocatalysts for fuel cells, showing outstanding catalytic activity and high stability. Research focuses on synthetic methods, morphology control, and applications in electrocatalytic reactions, with strategies to improve performance discussed.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Electrochemistry

Optimized electrocatalytic performance of PtZn intermetallic nanoparticles for methanol oxidation by designing catalyst support and fine-tuning surface composition

Xu Yuan et al.

Summary: This study focuses on the fabrication of PtZn intermetallic nanoparticles on a nitrogen-doped porous carbon support, which enhances the catalyst dispersibility and electrocatalytic performance. Adjusting the Pt/Zn mole ratio enables fine tuning of the catalyst's surface electronic structure, ultimately improving the efficiency of methanol oxidation reaction.

ELECTROCHIMICA ACTA (2021)

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Article Materials Science, Multidisciplinary

Effects of high magnetic field on the growth and magnetic property of L10-FePtCu nanoparticles

Chun Wu et al.

Summary: The introduction of high magnetic field during wet-chemical synthesis of FePtCu nanoparticles was shown to enhance the disorder-order transition and increase the ordering degree of the nanoparticles. The magnetic field also improved the alignment growth and magnetic properties of the nanoparticles, demonstrating a promising method for controlling their properties.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Pd-Pt Tesseracts for the Oxygen Reduction Reaction

Sheng Chen et al.

Summary: This study prepared Pd-Pt hollow frame structures with high catalytic activity towards ORR by selecting Pd/Pt ratio, showing the highest mass activity among various Pd-Pt nanocrystals. The high activity of Pd-Pt tesseracts is derived from optimal oxygen adsorption energy due to facet effect and composition effect.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Strain-Stabilized Metastable Face-Centered Tetragonal Gold Overlayer for Efficient CO2 Electroreduction

Dan Yu et al.

Summary: The stable fct Au nanocrystals synthesized through intermetallic core-shell structure exhibit significantly improved catalytic activity in CO2 reduction, attributed to the upshifted d-band center lowering the energy barrier for key intermediate COOH* formation.

NANO LETTERS (2021)

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Review Nanoscience & Nanotechnology

Challenges in applying highly active Pt-based nanostructured catalysts for oxygen reduction reactions to fuel cell vehicles

Kensaku Kodama et al.

Summary: Progress has been made in the development of Pt-based nanocatalysts for the oxygen reduction reaction over the past 30 years, with some now in commercial production for PEFCs. However, further improvements in catalytic activity are needed. State-of-the-art catalysts have potential to enhance energy conversion efficiencies and reduce platinum usage in PEFCs, but technical challenges remain for their application in fuel cell vehicles, such as high power density, practical durability, and efficiency.

NATURE NANOTECHNOLOGY (2021)

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Review Green & Sustainable Science & Technology

Fuel cell-battery hybrid systems for mobility and off-grid applications: A review

Shuai Ma et al.

Summary: The global demand for fossil fuels in the transportation sector is increasing rapidly due to the continuous growth of internal combustion engine vehicles, leading to severe environmental problems. Therefore, increasing the use of renewable energy sources in the transportation sector is necessary. Battery and fuel cells are promising alternatives due to high efficiency and low emissions, but are limited by capacity and dynamic response issues.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Recent Progress of Ultrathin 2D Pd-Based Nanomaterials for Fuel Cell Electrocatalysis

Hui Xu et al.

Summary: 2D Pd-based nanomaterials have emerged as potential candidates for fuel cell electrocatalysts due to their high intrinsic activity, electron mobility, and easy surface functionalization. Creating Pd- and Pd-based architectures with large surface areas, low-coordinated atoms, and high density of defects and edges is a promising strategy to enhance the electrocatalytic performance of fuel cells.

SMALL (2021)

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Article Engineering, Chemical

Ordered Mesoporous Carbon Confined Highly Dispersed PtCo Alloy for the Oxygen Reduction Reaction: The Effect of Structure and Composition on Performance

Yifei Liao et al.

Summary: Pt-based catalysts are currently the most promising catalysts for PEMFCs, but their sluggish kinetics for the ORR remains a challenge. This study demonstrates the potential of PtCo alloys with a specific intermetallic compound structure for improving the catalytic activity and durability for the ORR, offering insights into the design of efficient cathode catalysts for practical applications in fuel cells.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

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Article Chemistry, Physical

Rhombohedral Ordered Intermetallic Nanocatalyst Boosts the Oxygen Reduction Reaction

Xueru Zhao et al.

Summary: The study presents the synthesis of an L1(1)-ordered PtCu catalyst for the oxygen reduction reaction (ORR), demonstrating that nitrogen doping can enhance the activity and stability of the catalyst. The research shows that in acidic media, the ORR mass and specific activities of the N-doped, rhombohedral ordered PtCu catalyst achieve nearly 5-fold and 4-fold enhancement, respectively, compared to commercial Pt/C.

ACS CATALYSIS (2021)

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Article Chemistry, Physical

Strong electrostatic adsorption approach to the synthesis of sub-three nanometer intermetallic platinum-cobalt oxygen reduction catalysts

Yanling Ma et al.

Summary: The strong electrostatic adsorption (SEA) approach was utilized to synthesize sub-3 nm intermetallic PtCo ORR catalysts, effectively suppressing atomic migration and sintering during thermal annealing. The resulting catalyst exhibited high mass activity and excellent durability, providing a new strategy for preparing ultrafine low-PGM intermetallic nanocrystals for ORR.

NANO ENERGY (2021)

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Article Chemistry, Physical

Engineering intermetallic-metal oxide interface with low platinum loading for efficient methanol electrooxidation

Wei Zhao et al.

Summary: A strategy of constructing a distinctive electrochemical interface with low platinum content to boost methanol electrooxidation kinetics was proposed, resulting in the synthesis of highly active PtFe(1:2)@a-FeOx/NC-C catalyst with excellent electrocatalytic performance.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Chemistry, Physical

Trimetallic synergy in dendritic intermetallic PtSnBi nanoalloys for promoting electrocatalytic alcohol oxidation

Jingxian Zhang et al.

Summary: Dendritic intermetallic PtSnBi nanoalloys were successfully synthesized with high electrocatalytic performance and enhanced CO resistance for MOR and EOR reactions. The nanoalloys exhibited higher activity and stability compared to commercial Pt/C, showing great potential as broad energy electrocatalysts.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Materials Science, Multidisciplinary

Highly dispersed L10-PtZn intermetallic catalyst for efficient oxygen reduction

Tuo Zhao et al.

Summary: This study presents a highly dispersed L1(0)-PtZn intermetallic catalyst for the oxygen reduction reaction (ORR) using a Zn-rich metal-organic framework (MOF) as a support material. Through ligand effect and compressive strain, the Pt electron structure and binding strength between Pt and oxygen intermediates are optimized, resulting in a catalyst with higher activity and durability compared to commercial Pt/C. The stable L1(0) structure provides the catalysts with excellent durability, evolving into a more stable PtZn-Pt core-shell structure after cycles of accelerated stress tests.

SCIENCE CHINA-MATERIALS (2021)

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Article Chemistry, Multidisciplinary

An Element-Based Generalized Coordination Number for Predicting the Oxygen Binding Energy on Pt3M (M = Co, Ni, or Cu) Alloy Nanoparticles

Yusuke Nanba et al.

Summary: The binding energies of O species on face-centered-cubic Pt3M nanoparticles with a Pt-skin layer were studied using density functional theory calculations. The generalized coordination number (GCN) was used as an effective descriptor to predict atomic or molecular adsorption energy on Pt-NPs. An element-based GCN, referred to as GCN(A-B), was introduced and considered as a descriptor for supervised learning. The obtained regression coefficients of GCN(Pt-)(Pt) were smaller than those of the other GCN(A-B), indicating its role in explaining the ligand effect of the O binding energy on the Pt-skin Pt150M51-NPs.

ACS OMEGA (2021)

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Article Chemistry, Multidisciplinary

Template-Directed Rapid Synthesis of Pd-Based Ultrathin Porous Intermetallic Nanosheets for Efficient Oxygen Reduction

Jingchun Guo et al.

Summary: This study introduces a template-directed strategy for rapid synthesis of tunable-sized Pd-based ultrathin porous intermetallic nanosheets, demonstrating superior performance in the oxygen reduction reaction.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Structure evolution of PtCu nanoframes from disordered to ordered for the oxygen reduction reaction

Mingxing Gong et al.

Summary: The study compared the catalytic performance of platinum-copper alloys in different crystal structures for the first time, revealing that the rhombohedral PtCu intermetallics have significantly enhanced durability but decreased initial activity. Through in-situ STEM experiment and 3D tomography, it was showed that the ordering process improved resistance against copper leaching while causing collapse and aggregation of nanoframes.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Multidisciplinary

Alloyed Palladium-Lead Nanosheet Assemblies for Electrocatalytic Ethanol Oxidation

Jing Sun et al.

Summary: The study of alloyed bimetallic electrocatalysts with a three-dimensional structure assembly is of great interest in improving the efficiency of ethanol oxidation. The Pd3Pb/Pd NSAs exhibit excellent electrocatalytic activity, which can be regulated by adjusting the atomic mole ratio of lead and lead metal precursors.

LANGMUIR (2021)

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Review Chemistry, Physical

A review of proton exchange membranes based on protic ionic liquid/polymer blends for polymer electrolyte membrane fuel cells

Hosni Ahmed Elwan et al.

Summary: Protic ionic liquids are receiving increasing research attention due to their versatile properties, particularly as ideal electrolytes for proton exchange membrane fuel cells. Blending various polymers with protic ILs to form solid films for PEMFCs has been explored. Five conventional polymers combined with protic ILs are discussed in detail, along with other polymers used in PEMs based on protic ILs, to provide comprehensive coverage in this area of research.

JOURNAL OF POWER SOURCES (2021)

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Article Chemistry, Physical

Zigzag PtCo nanowires modified in situ with Au atoms as efficient and durable electrocatalyst for oxygen reduction reaction

Jidong Cao et al.

Summary: PtCoAu1.5 NWs with gold-modified surface exhibit significantly improved activity and stability, with a mass activity 11 times higher than commercial Pt/C, and the surface modification by trace Au atoms can suppress Co leaching, enhancing stability.

JOURNAL OF POWER SOURCES (2021)

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Review Chemistry, Multidisciplinary

Correlations between the fundamentals and applications of ultrasmall metal nanoclusters: Recent advances in catalysis and biomedical applications

Zhihe Liu et al.

Summary: This review article focuses on the correlation between the structures, physical and chemical properties of metal nanoclusters and their applications, highlighting the basic principles of structure- and property-oriented applications of metal nanoclusters. It provides guidance for the design of metal nanoclusters with desirable properties to meet application needs.

NANO TODAY (2021)

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Article Multidisciplinary Sciences

Sulfur-anchoring synthesis of platinum intermetallic nanoparticle catalysts for fuel cells

Cheng-Long Yang et al.

Summary: Atomically ordered intermetallic nanoparticles show promise for catalytic applications, with platinum intermetallics synthesized on porous sulfur-doped carbon supports demonstrating high activity and resistance to metal sintering. The intermetallic libraries of small nanoparticles exhibit high mass efficiency in proton-exchange-membrane fuel cells, achieving significant activity levels.

SCIENCE (2021)

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Article Green & Sustainable Science & Technology

A Technical analysis investigating energy sustainability utilizing reliable renewable energy sources to reduce CO2 emissions in a high potential area

A. Razmjoo et al.

Summary: The study investigates sustainable hybrid renewable systems for electricity production in Iran, finding that utilizing a hybrid system can reduce CO2 emissions and enhance sustainable electricity generation, providing economic justification for stakeholders to invest in the renewable energy sector.

RENEWABLE ENERGY (2021)

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Article Chemistry, Physical

Role of the Secondary Metal in Ordered and Disordered Pt-M Intermetallic Nanoparticles: An Example of Pt3Sn Nanocubes for the Electrocatalytic Methanol Oxidation

Hsiang-Sheng Chen et al.

Summary: The study found that in Pt3Sn catalysts, 60% ordered nanocubes exhibit higher activity compared to 95% ordered nanocubes, as the Sn atoms in the 60% ordered nanocubes are more easily oxidized to Sn4+, leading to better oxidation efficiency. This highlights the importance of controlling the environment and neighboring atoms in catalyst design for intermetallic Pt-M electrocatalysts.

ACS CATALYSIS (2021)

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Review Nanoscience & Nanotechnology

Defect and Doping Co-Engineered Non-Metal Nanocarbon ORR Electrocatalyst

Jian Zhang et al.

Summary: This review summarizes recent advances in developing non-metal carbon-based electrocatalysts for the ORR, emphasizing the characteristics, ORR performance, and mechanisms of functionalized nanocarbons by heteroatom doping and defect inducing.

NANO-MICRO LETTERS (2021)

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Article Chemistry, Multidisciplinary

Size-Controlled Intermetallic PtZn Nanoparticles on N-Doped Carbon Support for Enhanced Electrocatalytic Oxygen Reduction

Xiao Han et al.

Summary: This study successfully synthesized uniform PtZn intermetallic nanoparticles with controlled size and demonstrated significantly improved electrocatalytic performance for oxygen reduction reaction compared to traditional Pt/C catalysts. The innovative use of TCPP as a bifunctional coordination agent coordinating with Pt ions and ZIF-8 is a key feature of this research. The presented size uniformity control strategy offers a new approach to enhance the activity and stability of Pt-based catalysts in fuel cells.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Chemistry, Physical

Reduced Graphene Oxide-Supported Pt-Based Catalysts for PEM Fuel Cells with Enhanced Activity and Stability

Irina Pushkareva et al.

Summary: The Pt/RGO catalyst synthesized through optimized simultaneous reduction process shows higher Pt utilization, better performance stability, and significantly increases fuel cell power density. The advantages of Pt/RGO over Pt/C include high electrical conductivity, larger specific surface area provided by RGO, and reduced percolation limit of electrocatalytic layer components due to high aspect ratio of RGO.

CATALYSTS (2021)

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Article Multidisciplinary Sciences

Subnanometer high-entropy alloy nanowires enable remarkable hydrogen oxidation catalysis

Changhong Zhan et al.

Summary: HEAs have shown superior performance in alkaline hydrogen oxidation reaction, exhibiting high activity and CO poisoning resistance. Density functional theory calculations reveal the unique advantages of HEAs. This study not only provides a method for preparing Pt-based HEA subnano/nano materials, but also promotes fundamental research in catalysis and other fields.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Atomic Rearrangement in Core-Shell Catalysts Induced by Electrochemical Activation for Favorable Oxygen Reduction in Acid Electrolytes

Daeil Choi et al.

Summary: Selective leaching of the non-Pt metal component in Pt-based alloy structures enhances catalytic activity and induces structural changes. Electrochemical activation leading to the formation of localized PtCu alloy improves catalytic activity and durability through atomic rearrangement.

ACS CATALYSIS (2021)

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Review Multidisciplinary Sciences

High-entropy materials for energy-related applications

Maosen Fu et al.

Summary: High-entropy materials have gained significant interests in recent years for their unique structures and applications in energy-related fields. This review summarizes the research progress of energy applications of HEMs, aiming to understand the correlations between their structures and performances. Challenges and future directions for developing HEMs are also discussed.

ISCIENCE (2021)

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Article Nanoscience & Nanotechnology

Phase-Controlled Synthesis of Pd-Sn Nanocrystal Catalysts of Defined Size and Shape

Sandra L. A. Bueno et al.

Summary: The study successfully synthesized phase-controlled Pd-Sn nanoparticles using a one-pot method, which exhibited good catalytic activity, with Pd2Sn quasi-spheres and nanorhombohedra showing the most outstanding performance.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Ni1-xCoxSe2-C/ZnIn2S4 Hybrid Nanocages with Strong 2D/2D Hetero-Interface Interaction Enable Efficient H2-Releasing Photocatalysis

Yuguang Chao et al.

Summary: The design of Ni1-xCoxSe2-C/ZnIn2S4 hierarchical nanocages with 2D/2D hetero-interfaces significantly enhances the separation and transfer of photo-generated charge carriers, leading to remarkable H-2 releasing photocatalytic activity under visible light irradiation.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

A Tensile-Strained Pt-Rh Single-Atom Alloy Remarkably Boosts Ethanol Oxidation

Shuiping Luo et al.

Summary: The study presents a method for preparing isolated Rh atoms and tensile-strained Pt-Rh single-atom alloy through atomic galvanic replacement and electrochemical dealloying, demonstrating high electrocatalytic performance in alkaline electrolytes with activity, selectivity, stability, and anti-poisoning ability.

ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Recent Advances in Electrocatalysts for Proton Exchange Membrane Fuel Cells and Alkaline Membrane Fuel Cells

Fei Xiao et al.

Summary: The article summarizes the current development status of PEMFCs and AMFCs, including electrocatalyst design, catalyst layer optimization, and cell performance. It discusses and compares the activity, stability, and fuel cell performance of different types of electrocatalysts for the oxygen reduction and hydrogen oxidation reactions, while also exploring research directions for further development.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Amplified Interfacial Effect in an Atomically Dispersed RuOx-on-Pd 2D Inverse Nanocatalyst for High-Performance Oxygen Reduction

Zixi Lyu et al.

Summary: This study successfully prepared RuOx-on-Pd nanosheets as inverse nanocatalysts, showing unexpected performance towards the oxygen reduction reaction. The RuOx/Pd interface altered the adsorption configuration of O-2, facilitating O-O bond cleavage, while effectively downshifting the d-band center of Pd nanosubstrates to weaken oxygen binding strength.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Review Chemistry, Physical

A perspective on the catalysis using the high entropy alloys

Nirmal Kumar Katiyar et al.

Summary: Research has shown that high entropy alloys (HEAs) have unique advantages in the field of catalysis by providing a platform to tune surface properties through element selection and control, offering prospects for designing novel catalytic materials. The future challenge and opportunity lies in delving deep into the multi-component phase space to discover new materials with unique catalytic properties.

NANO ENERGY (2021)

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Article Chemistry, Physical

One-Pot Microwave-Assisted Synthesis of Graphene-Supported PtCoM (M = Mn, Ru, Mo) Catalysts for Low-Temperature Fuel Cells

Antanas Nacys et al.

Summary: In this study, graphene-supported PtCoM catalysts with various metal ratios were synthesized using one-pot microwave-assisted method. The PtCoMn/GR catalyst exhibited the highest electrochemical performance for methanol oxidation among PtCoRu/GR, PtCoMo/GR, and bare Pt/GR catalysts.

CATALYSTS (2021)

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Article Chemistry, Physical

Highly Enhanced Electrocatalytic Performances with Dendritic Bimetallic Palladium-Based Nanocrystals

Respati K. Pramadewandaru et al.

Summary: The synthesis of bimetallic Pd-Pt nanodendrites can improve their electrocatalytic properties, showing promising potential for various applications.

CATALYSTS (2021)

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Article Materials Science, Multidisciplinary

Interfacial engineering of heterogeneous catalysts for electrocatalysis

Youkui Zhang et al.

Summary: Electrocatalysis is a practical process for chemical energy conversion and the interface engineering plays a critical role in enhancing catalytic performance. However, more comprehensive discussions and research are needed on the working mechanism of interface structures in design and identification.

MATERIALS TODAY (2021)

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Article Chemistry, Physical

Toward the Continuous Production of Multigram Quantities of Highly Uniform Supported Metallic Nanoparticles and Their Application for Synthesis of Superior Intermetallic Pt-Alloy ORR Electrocatalysts

Luka Pavko et al.

Summary: A fast and easy pulse combustion method has been developed for continuous production of high-metal-loaded and highly uniform supported metallic nanoparticles. By combining PC technology with the DP method, superior intermetallic Pt-M electrocatalysts have been successfully produced for proton exchange membrane fuel cells applications.

ACS APPLIED ENERGY MATERIALS (2021)

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Article Chemistry, Physical

Insights into the Electronic Effects in Methanol Electro-Oxidation by Ternary In1-xSnxPd2 Intermetallic Compounds

Ridha Zerdoumi et al.

Summary: The gradual substitution of one element by another from a different group in isostructural intermetallic compounds allows for a systematic variation of the total number of electrons per unit cell with only minor variation in geometric parameters, highlighting the correlation between electronic and electrocatalytic properties in the methanol oxidation reaction.

ACS APPLIED ENERGY MATERIALS (2021)

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Review Biochemistry & Molecular Biology

Preparation, Performance and Challenges of Catalyst Layer for Proton Exchange Membrane Fuel Cell

Meng Xie et al.

Summary: This paper summarizes the composition, function, and structure of the catalyst layer (CL) in PEMFC, as well as the failure and degradation mechanisms, proposing a structure optimization strategy for high-performance CL. It also introduces common preparation processes and drying mechanisms, while pointing out research directions and future challenges for CL.

MEMBRANES (2021)

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Article Nanoscience & Nanotechnology

Vertex-Directed and Asymmetric Metal Overgrowth of Intermetallic Pd3Pb@PtNi Nanocubes for the Oxygen Reduction Reaction

Hannah M. Ashberry et al.

Summary: The deposition of PtNi shells on intermetallic Pd3Pb nanocubes as seeds was studied, showing vertex-directed and asymmetric overgrowths. The mode of overgrowth was impacted by the amount of capping agent and reaction temperature, leading to different performances of the core@shell nanoparticles in the oxygen reduction reaction. Achieving fine architectural control for core@shell nanoparticles through judicious selection of synthetic conditions was highlighted as crucial for optimizing catalytic activity.

ACS APPLIED NANO MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Tailoring lattice strain in ultra-fine high-entropy alloys for active and stable methanol oxidation

Dongdong Wang et al.

Summary: This study proposes a surface strain strategy to tune the electrocatalytic activity of high-entropy alloys (HEAs), showing that HEA-700 obtained by heat treatment exhibits higher specific activity and mass activity compared to HEA-400, attributed to the compressive strain in the surface Pt layer.

SCIENCE CHINA-MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Ga-Doped Intermetallic Pd3Pb Nanocubes as a Highly Efficient and Durable Oxygen Reduction Reaction Electrocatalyst

Rong Shen et al.

Summary: Pd-based nanocrystals doped with Ga showed significantly enhanced catalytic properties for oxygen reduction reaction, outperforming the Pd3Pb nanocubes and commercial Pt/C in an alkaline media. The Ga-doped Pd3Pb nanocubes with 1.76% Ga content exhibited the best ORR electrocatalytic performance, with higher specific and mass activities compared to Pt/C. Additionally, the Ga-doped Pd3Pb nanocubes displayed improved durability with a higher mass activity retention after 20000 cycles.

CHEMISTRYSELECT (2021)

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Review Energy & Fuels

New roads and challenges for fuel cells in heavy-duty transportation

David A. Cullen et al.

Summary: The recent release of hydrogen economy roadmaps highlights the need for increased global investment in hydrogen production, storage, infrastructure and utilization. The shift in focus towards heavy-duty vehicle applications for fuel cell technologies is discussed, along with the required improvements in fuel cell systems and materials to meet efficiency and durability requirements. The article also summarizes the latest market outlooks and targets for heavy-duty vehicle applications.

NATURE ENERGY (2021)

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Article Chemistry, Multidisciplinary

Pt-based Intermetallic Nanocatalysts for Promoting the Oxygen Reduction Reaction

Ho Young Kim et al.

Summary: This article reviews recent advances in Pt-based intermetallic nanocatalysts in PEMFCs, illustrating synthetic strategies and principles for activity enhancement, showcasing high-performance examples in practical applications, and discussing future directions and current issues. The rapid progress in intermetallic nanocatalysts is expected to lead to their widespread usage in PEMFCs in the future.

BULLETIN OF THE KOREAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Physical

High-Index Faceted PdPtCu Ultrathin Nanorings Enable Highly Active and Stable Oxygen Reduction Electrocatalysis

Menggang Li et al.

Summary: This study presents PdPtCu ultrathin nanorings with abundant high-index facets, breaking the activity ceiling of conventional catalysts and achieving an ultrahigh electrochemical active surface area. The optimized Pd39Pt33Cu28/C catalyst shows enhanced ORR activity and superior durability, with exciting prospects for high-performance ORR catalysts in fuel cells.

SMALL METHODS (2021)

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Review Energy & Fuels

The Sabatier Principle in Electrocatalysis: Basics, Limitations, and Extensions

Hideshi Ooka et al.

Summary: The Sabatier principle, which emphasizes on the optimal binding energy between catalyst and reactant, has evolved from an empirical principle to a quantitative predictive tool thanks to the success of density functional theory (DFT). Understanding and overcoming the limitations and challenges of the Sabatier principle in its current thermodynamic context is crucial for the development of next-generation electrocatalysts.

FRONTIERS IN ENERGY RESEARCH (2021)

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Article Nanoscience & Nanotechnology

Templated-Assisted Synthesis of Structurally Ordered Intermetallic Pt3Co with Ultralow Loading Supported on 3D Porous Carbon for Oxygen Reduction Reaction

Xiao-Feng Han et al.

Summary: The study successfully synthesized structurally ordered intermetallic Pt3Co alloy catalyst with ultralow Pt loading using the NaCl-template-assisted method, supported on a porous carbon structure, achieving high efficiency, economy, and durability. The 3D Pt3Co/C catalyst showed excellent mass activities in alkaline and acidic electrolytes, as well as remarkable stability, bringing new hopes for the development of PEMFC.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Interface-Rich Three-Dimensional Au-Doped PtBi Intermetallics as Highly Effective Anode Catalysts for Application in Alkaline Ethylene Glycol Fuel Cells

Xiaotong Yang et al.

Summary: This study introduces a novel 3D PtBiAu intermetallics as high-performance anode electrocatalysts for application in alcohol fuel cells, which exhibit superior activity and long-term durability.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Sub-Monolayer YOx/MoOx on Ultrathin Pt Nanowires Boosts Alcohol Oxidation Electrocatalysis

Menggang Li et al.

Summary: This study demonstrates a new strategy to fabricate platinum nanowires that effectively eliminate CO poisoning, leading to enhanced methanol oxidation electrocatalysis. The optimized nanowires show high specific and mass activity, as well as improved stability, and also exhibit superior activities towards the electro-oxidation of other alcohols.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Design of Highly Durable Core-Shell Catalysts by Controlling Shell Distribution Guided by In-Situ Corrosion Study

Fenglei Shi et al.

Summary: In this study, an optimized nanocube with enhanced corrosion resistance was designed based on in-situ study on nanoscale corrosion kinetics. The modified nanocube (MNC) showed the best stability performance in practical electrochemical stability testing, with a minimal loss in specific and mass activity after accelerated durability test. This work highlights the importance of in-situ study in guiding the design of materials with improved properties for practical applications.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

3D Anisotropic Au@Pt-Pd Hemispherical Nanostructures as Efficient Electrocatalysts for Methanol, Ethanol, and Formic Acid Oxidation Reaction

Wenkai Liang et al.

Summary: In this work, 3D Au@Pt-Pd hemispherical nanostructures were fabricated as highly efficient electrocatalysts for oxidation reactions, exhibiting superior activity and durability compared to commercial Pt/C catalysts. The unique anisotropic nanostructures provide important insights for the design and preparation of high-efficiency electrocatalysts.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Mo2N-W2N Heterostructures Embedded in Spherical Carbon Superstructure as Highly Efficient Polysulfide Electrocatalysts for Stable Room-Temperature Na-S Batteries

Shipeng Zhang et al.

Summary: In this study, a Mo2N-W2N heterostructure embedded in a spherical carbon superstructure was designed to promote NaPS redox reactions and suppress the polysulfide shuttle effect, achieving high-performance Na-S batteries. The obtained battery showed high reversible capacity, superior long-term stability, and excellent rate capability.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

A Top-Down Strategy to Realize Surface Reconstruction of Small-Sized Platinum-Based Nanoparticles for Selective Hydrogenation

Yu Jin et al.

Summary: This study introduces a novel top-down thermal annealing strategy for tuning the surface properties of Pt-based nanoparticles without aggregation. The optimized Pt-Cd nanoparticles exhibit excellent selectivity in hydrogenation reactions, providing a new approach for catalyst design in heterogeneous catalysis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Phase-Dependent Electrocatalytic CO2 Reduction on Pd3Bi Nanocrystals

Lin Jia et al.

Summary: Alloying is a common strategy for modulating electronic structures of catalyst materials, with intermetallic alloys providing a unique platform for studying structure-performance correlations. In this study, intermetallic Pd3Bi nanocrystals were successfully prepared via a facile solvothermal method, demonstrating high selectivity and stability in electrochemical CO2 reduction. The phase-dependence of performance was attributed to the crystallographic ordering within intermetallic alloys, suppressing CO poisoning and enhancing *OCHO adsorption.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Review Chemistry, Multidisciplinary

Intermetallic Compounds: Liquid-Phase Synthesis and Electrocatalytic Applications

Yuliang Yuan et al.

Summary: Intermetallics, characterized by long-range atomic ordering, well-defined stoichiometry, and controlled crystal structure, have attracted increasing attention in the area of chemical synthesis and catalytic applications. Liquid-phase synthesis of intermetallics is seen as a promising methodology due to its precise control over size, shape, and resistance toward sintering compared with traditional metallurgy. This short review provides perspectives on the liquid-phase synthesis of intermetallics in terms of thermodynamics and methodology, as well as its applications in various catalytic reactions.

CHEMISTRY-A EUROPEAN JOURNAL (2021)

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Article Electrochemistry

Fully ordered L10-PtCoAu electrocatalyst derived from PtAu@CoO precursor with enhanced performance for oxygen reduction reaction

Jidong Cao et al.

Summary: In this study, fully ordered Au-doped PtCo nanoparticles with a size of sub-4 nm were successfully synthesized by annealing the PtAu alloy coated by CoO shell under H-2 atmosphere. The introduction of Au and Co atoms synergistically tuned the crystal and electronic structure of Pt, leading to enhanced activity and durability in oxygen reduction reaction. This work provides a facile and scalable method for preparing small-sized Pt-based intermetallic alloy catalyst with improved performance.

ELECTROCHIMICA ACTA (2021)

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Review Chemistry, Physical

Hydrogen-based systems for integration of renewable energy in power systems: Achievements and perspectives

Torbjorn Egeland-Eriksen et al.

Summary: Hydrogen energy storage systems are technically feasible but require cost reductions for commercial attractiveness; low energy efficiency of some components affects costs; with the expected increase of intermittent renewable energy in power systems, hydrogen technology may see further development; hybrid systems offer the best solution but need to be tailored to specific situations for optimal efficiency.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Chemistry, Multidisciplinary

One Nanometer PtIr Nanowires as High-Efficiency Bifunctional Catalysts for Electrosynthesis of Ethanol into High Value-Added Multicarbon Compound Coupled with Hydrogen Production

Kun Yin et al.

Summary: This study presents the efficient electrosynthesis of high-value-added compound DEE and high-purity hydrogen using bifunctional catalysts PtIr nanowires. The catalysts exhibited lower voltage and higher Faraday efficiencies, promoting the activation of O-H and C-H bonds in ethanol for DEE production, showing great potential for wide application in electrosynthesis.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Pt-Co@Pt Octahedral Nanocrystals: Enhancing Their Activity and Durability toward Oxygen Reduction with an Intermetallic Core and an Ultrathin Shell

Minghao Xie et al.

Summary: In this study, Pt-Co@Pt octahedral nanocrystals were successfully synthesized with an intermetallic Pt-Co core and an ultrathin Pt shell dominated by {111} facets on the surface. These nanocrystals showed significantly improved catalytic performance towards the oxygen reduction reaction compared to a commercial Pt/C catalyst, with a mass activity 13.4 times higher and a specific activity 29.5 times higher. Importantly, the mass activity of the nanocrystals only decreased by 21% after 30,000 cycles of accelerated durability testing, indicating their outstanding potential as catalysts for ORR and related reactions.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Physical

Sulfur-doped graphene anchoring of ulltrafine Au25 nanoclusters for electrocatalysis

Mufan Li et al.

Summary: The use of chemical dopants on sulfur-doped graphene has been shown to stabilize ultrafine gold nanoclusters for efficient nitrogen reduction reaction. The anchored clusters demonstrate high stability and activity, maintaining 80% of the NRR activity even after four days of continuous operation. This substrate-anchoring process offers a promising strategy for studying the electrocatalytic behavior of ultrafine nanoclusters while minimizing surface motif destruction under harsh reaction conditions.

NANO RESEARCH (2021)

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Article Multidisciplinary Sciences

Subsize Pt-based intermetallic compound enables long-term cyclic mass activity for fuel-cell reduction

Han Cheng et al.

Summary: By breaking the size limitation in Pt alloy systems, subsize Pt-based intermetallic compounds can simultaneously optimize MA and durability. Furthermore, the subsize scale was found to enhance the stability of membrane electrodes, preventing catalyst poisoning by ionomers in humid fuel-cell conditions.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

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Review Green & Sustainable Science & Technology

Hydrogen energy systems: A critical review of technologies, applications, trends and challenges

Meiling Yue et al.

Summary: This paper reviews the current progress and outlook of hydrogen technologies and their application in power systems, highlighting the importance of hydrogen in clean energy and pointing out the technical and economic challenges that need to be addressed.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

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Article Multidisciplinary Sciences

Hierarchical crack buffering triples ductility in eutectic herringbone high-entropy alloys

Peijian Shi et al.

Summary: The study demonstrates a directionally solidified eutectic high-entropy alloy with a hierarchically organized herringbone structure that reconciles crack tolerance and high elongation. The self-buffering herringbone material achieves an ultrahigh uniform tensile elongation while maintaining strength.

SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Recent Advances in Electrocatalysts for Alkaline Hydrogen Oxidation Reaction

Ruopeng Zhao et al.

Summary: With the rapid development of anion-exchange membrane technology and sufficient supply of high-performance non-noble metal catalysts, the commercialization of anion exchange membrane fuel cells has become possible. However, the kinetics of anodic hydrogen oxidation reaction in AEMFCs is lower compared to PEMFCs, requiring the development of catalysts with lower cost and higher activity. This review provides a summary and deep understanding of current reaction mechanisms on HOR, along with recent advances and challenges in developing highly active and stable electrocatalysts.

SMALL (2021)

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Review Chemistry, Physical

Recent Progress on Structurally Ordered Materials for Electrocatalysis

Hainan Sun et al.

Summary: This article discusses the fundamental strategy of tuning material properties by modulating the arrangement of atoms and designing high-performance electrocatalysts based on structurally ordered materials. It also summarizes recent progress in utilizing structurally ordered materials as efficient electrocatalysts in various electrochemical reactions. Through advanced characterization techniques and electrochemical measurements, the advantages of structurally ordered materials in enhancing electrocatalytic activity are highlighted, along with discussions on the structure-activity relationship and future challenges in this field.

ADVANCED ENERGY MATERIALS (2021)

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Review Nanoscience & Nanotechnology

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Amr Radwan et al.

Summary: The significant progress of MOFs-derived electrocatalysts in ORR, OER, and HER applications is mainly attributed to their high-porosity structure, large surface area, and abundant active centers.

NANO-MICRO LETTERS (2021)

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Review Chemistry, Applied

Synthesis of noble metal-based intermetallic electrocatalysts by space-confined pyrolysis: Recent progress and future perspective

Lei Zhao et al.

Summary: The review summarizes recent research progress on synthesizing noble metal-based intermetallic electrocatalysts by space-confined pyrolysis, focusing on three strategies: isolation in pores, coverture by shells, and immobilization by salts. The advantages and existing problems of different methods are highlighted, and important issues to be addressed in future research are also discussed.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Review Chemistry, Physical

Pt-Based Intermetallic Nanocrystals in Cathode Catalysts for Proton Exchange Membrane Fuel Cells: From Precise Synthesis to Oxygen Reduction Reaction Strategy

Peng Gao et al.

Summary: Pt-based intermetallic nanocrystals have shown great potential as cathode catalysts in proton exchange membrane fuel cells due to their excellent ORR activity and stability. However, challenges remain in their synthesis and performance enhancement. This review provides insights into the difficulties, improvements, and future research directions of Pt-based intermetallic nanocrystals for ORR applications.

CATALYSTS (2021)

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Review Chemistry, Physical

Carbon Monoxide Tolerant Pt-Based Electrocatalysts for H2-PEMFC Applications: Current Progress and Challenges

Costas Molochas et al.

Summary: Currently, hydrogen-fed proton exchange membrane fuel cells are facing activity degradation in the presence of trace amounts of carbon monoxide in the hydrogen fuel, hindering commercialization. Efforts are focused on developing practical anode electrocatalysts with high CO tolerance and stability, mainly through improvement of Pt-based electrocatalysts and exploration of substituting traditional carbon black supports with advanced materials.

CATALYSTS (2021)

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Review Chemistry, Multidisciplinary

Recent Insights on Catalyst Layers for Anion Exchange Membrane Fuel Cells

Junfeng Zhang et al.

Summary: The performance of anion exchange membrane fuel cells has significantly improved in the last decade, now comparable with proton exchange membrane fuel cells. Issues in the catalyst layer play important roles in performance, and the anion exchange ionomer is crucial in maximizing the utilization of electrocatalyst and fuel/oxygen transfer process.

ADVANCED SCIENCE (2021)

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Article Materials Science, Multidisciplinary

Insight on the active sites of CoNi alloy embedded in N-doped carbon nanotubes for oxygen reduction reaction

Ying Wang et al.

Summary: Transition metal alloy electrocatalysts, such as CoNi-NCTs, have been studied for their superior performance in oxygen reduction reaction. The CoNi-NCT catalysts show remarkable catalytic activity, high power density, and excellent stability, outperforming commercial Pt/C catalysts.

SCIENCE CHINA-MATERIALS (2021)

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Article Multidisciplinary Sciences

Size- and composition-controlled intermetallic nanocrystals via amalgamation seeded growth

Jasper Clarysse et al.

Summary: A colloidal synthesis method based on amalgamation of monometallic nanocrystal seeds with low-melting point metals is developed in this study, allowing for size- and composition-controlled intermetallic nanocrystals.

SCIENCE ADVANCES (2021)

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Article Chemistry, Physical

Heterogeneous fcc-Pt/hcp-PtBi Thick-Edge Nanoplates with Enhanced Activity for Formic Acid Oxidation

Xuemin Li et al.

Summary: A facile wet-chemical synthesis method was developed to fabricate PtBi NPs with heterogeneous structure, which exhibited enhanced catalytic activity and stability for the oxidation of formic acid. The best catalytic performance of Pt85Bi15 NPs suggested the presence of synergistic effect between intermetallic hcp-PtBi and fcc-Pt.

ACS APPLIED ENERGY MATERIALS (2021)

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Review Chemistry, Physical

Defective Structures in Metal Compounds for Energy-Related Electrocatalysis

Xuecheng Yan et al.

Summary: This article focuses on the manipulation of electronic structures and surface properties of electrocatalysts, as well as the introduction of defects to enhance their activity. It summarizes the commonly used methods for creating anion and cation vacancies, and emphasizes the control of defect density and filling heteroatoms to improve catalytic performance.

SMALL STRUCTURES (2021)

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Article Chemistry, Multidisciplinary

A pH-universal ORR catalyst with single-atom iron sites derived from a double-layer MOF for superior flexible quasi-solid-state rechargeable Zn-air batteries

Meiqi Zhao et al.

Summary: The Fe-1/d-CN catalyst demonstrates excellent ORR activity across different pH ranges, surpassing almost all reported non-noble electrocatalysts and commercial Pt/C catalyst. Its exceptional performance can be attributed to the regulation of Fe centers' electronic structure and remarkable electron/proton transport capability derived from defects and porous features. Moreover, the catalyst shows remarkable durability and performs well in quasi-solid-state Zn-air batteries, displaying high OCV and power density.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Nanoscience & Nanotechnology

Structural Regulation of Pd-Based Nanoalloys for Advanced Electrocatalysis

Menggang Li et al.

Summary: Palladium (Pd)-based materials have attracted attention as potential catalysts to replace platinum (Pt) catalysts, but the need for high activity and stability has made development challenging. Alloying and structure-controlled strategies have addressed this challenge by optimizing adsorption/desorption behaviors towards reaction intermediates. Tuning the dimensionalities of Pd-based nanoalloys has further increased electrocatalytic activity.

SMALL SCIENCE (2021)

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Article Chemistry, Physical

Intermetallic compounds M2Pt (M = Al, Ga, In, Sn) in the oxygen evolution reaction

Ana Maria Barrios Jimenez et al.

Summary: The Pt-based intermetallic compounds M2Pt with anti-CaF2 type of crystal structure were studied as electrocatalysts for the oxygen evolution reaction (OER) in acidic media, showing enhanced activity compared to elemental Pt, especially with further improvement during the partial leaching of the M component. Therefore, the M2Pt compounds can act as precursors for the formation of OER-active MxPt1-x layers.

SUSTAINABLE ENERGY & FUELS (2021)

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Article Chemistry, Physical

Cu-incorporated PtBi intermetallic nanofiber bundles enhance alcohol oxidation electrocatalysis with high CO tolerance

Jingxian Zhang et al.

Summary: This study reports a facile surfactant-free strategy for producing Cu-incorporated PtBi intermetallic nanofiber bundles, which exhibit excellent electrocatalytic performance towards methanol and ethanol oxidation reactions. The Cu-PtBi NFBs show remarkable CO tolerance, superior mass and specific activities, as well as improved efficiency compared to commercial Pt/C, making them promising anodic materials for fuel cell applications. X-ray absorption fine structure analysis and density functional theory simulation confirm the key role of ordered PtBi-based structure and Cu-induced bifunctional effect in optimizing the CO-poisoning pathway.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

Industrially promising NiCoP nanorod arrays tailored with trace W and Mo atoms for boosting large-current-density overall water splitting

Xin Guo et al.

Summary: By doping trace amounts of W and Mo atoms, a nanoarray catalyst was constructed, showing low overpotential for both hydrogen evolution and oxygen evolution reactions at high current densities. This co-doping strategy led to enhanced catalytic activity and long-term stability in an overall water splitting device, outperforming most state-of-the-art bifunctional electrocatalysts.

NANOSCALE (2021)

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Article Chemistry, Multidisciplinary

Atomically dispersed single iron sites for promoting Pt and Pt3Co fuel cell catalysts: performance and durability improvements

Zhi Qiao et al.

Summary: Integrating PGM-free atomically-dispersed single metal active sites in the carbon support can effectively enhance the performance of PGM catalysts, achieving higher efficiency and sustainability with lower loading. The synergistic interaction between Pt clusters and surrounding FeN4 sites enhances the intrinsic activity of Pt, leading to significantly improved overall catalytic performance and stability.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Combining the core-shell construction with an alloying effect for high efficiency ethanol electrooxidation

Danye Liu et al.

Summary: Combining core-shell construction with an alloying effect is effective for optimizing electronic and lattice strain effects to achieve highly catalytic efficiency for a given electrochemical reaction. In this study, core-shell Au@FePd nanoparticles with an Au core and a sub-nano FePd alloy shell were utilized to demonstrate this concept, showing promising results in ethanol electrooxidation.

CELL REPORTS PHYSICAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Engineering electrocatalyst nanosurfaces to enrich the activity by inducing lattice strain

Sandip Maiti et al.

Summary: Electrocatalysis plays a crucial role in future energy conversion and storage technologies such as fuel cells, water electrolyzers, and metal-air batteries. By tuning atomic surface structure, optimization of catalyst activity and stability can be achieved. Experimental studies reveal the impact of lattice strain on catalytic activity tuning and establishing reactivity-strain relationships informs the tuning and enhancement of electrocatalytic activity and stability.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Atomic-level insight into reasonable design of metal-based catalysts for hydrogen oxidation in alkaline electrolytes

Lulu An et al.

Summary: This article briefly presents the reaction mechanism of HOR under alkaline conditions and discusses the critical roles of metal-based catalysts in alkaline HOR, providing atomic-level understanding for catalyst development. It also illustrates potential synthesis methods of metal-based catalysts and highlights the challenges and promising avenues for future studies in this field.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Physical

Hole-rich CoP nanosheets with an optimized d-band center for enhancing pH-universal hydrogen evolution electrocatalysis

Shuo Geng et al.

Summary: Tailoring the d-band center and introducing holes can significantly enhance the hydrogen evolution reaction (HER) activity of CoP nanosheets in both acidic and alkaline media. This strategy not only improves the HER performance of electrocatalysts but also demonstrates excellent stability.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Multidisciplinary

Metallenes as functional materials in electrocatalysis

P. Prabhu et al.

Summary: Metalenes, as atomically thin layers primarily composed of under-coordinated metal atoms, have shown promising physicochemical properties for catalytic applications in electrochemical conversions. With growing interest in metalenes, there is a need to review research findings and identify future directions for advancements in the field.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Energy & Fuels

Bridging the gap between highly active oxygen reduction reaction catalysts and effective catalyst layers for proton exchange membrane fuel cells

Jiantao Fan et al.

Summary: The impressive performance of low-platinum-loading oxygen reduction reaction catalysts in initial electrochemical tests is often not reflected in real fuel cells, leading researchers to explore strategies to address this issue.

NATURE ENERGY (2021)

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Article Chemistry, Physical

Trace Pd modified intermetallic PtBi nanoplates towards efficient formic acid electrocatalysis†

Min Tang et al.

Summary: By depositing trace amounts of Pd atoms on intermetallic PtBi hexagonal nanoplates, the selectivity of the dehydrogenation path is significantly improved, achieving highly efficient formic acid electrocatalysis with superior mass activity.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Multidisciplinary

High temperature proton exchange membrane fuel cells: progress in advanced materials and key technologies

Rizwan Haider et al.

Summary: High temperature proton exchange membrane fuel cells (HT-PEMFCs) have advantages such as fast reaction kinetics and high tolerance to impurities, but challenges like high cost and low durability hinder their practical applications. Researchers worldwide are focusing on exploring new materials and technologies to develop high-performance HT-PEMFCs. To facilitate further research and development of HT-PEMFCs, existing challenges are discussed and future research directions are proposed.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Emerging dynamic structure of electrocatalysts unveiled by in situ X-ray diffraction/absorption spectroscopy

Yanping Zhu et al.

Summary: Recent research on electrochemical OER and CO2RR has shifted from optimizing catalyst materials to elucidating the true active sites of catalysts and understanding the mechanisms behind complex reactions; in situ/operando characterization techniques have played a crucial role in achieving this goal.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Galvanic replacement of intermetallic nanocrystals as a route toward complex heterostructures

Alexander N. Chen et al.

Summary: Galvanic replacement reactions are a reliable method for transforming monometallic nanotemplates into bimetallic products with complex nanoscale architectures. The replacement of bimetallic nanotemplates can lead to even more complex multimetallic products, with final nanocrystal shapes and architectures depending on various processes such as Ostwald ripening and the Kirkendall effect. Studies have shown that replacement products often lose Cu more quickly than Pd, maintain the crystal structure of the original template, and grow a new phase on the sacrificial template, resulting in diverse product morphologies including faceting, core@shell, and Janus-style particles.

NANOSCALE (2021)

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Review Chemistry, Multidisciplinary

Strategies to enhance the electrochemical performances of Pt-based intermetallic catalysts

Jiaxi Zhang et al.

Summary: This article summarizes the strategies for enhancing the performance of Pt-based intermetallic catalysts, including size control, surface engineering, and composition tuning. Studies highlight the positive effect of surface engineering on efficiency improvement and recent progress in composition tuning.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Multidisciplinary

Advanced Oxygen Electrocatalysis in Energy Conversion and Storage

Huan Yang et al.

Summary: This article summarizes the importance of oxygen electrocatalysis in electrochemical energy conversion and storage, recent developments in understanding oxygen electrochemistry, and various categories of oxygen electrocatalysts. Design strategies and the relationship between structure, activity, and performance of oxygen electrocatalysts are comprehensively discussed, with a focus on the challenges and outlook for advanced oxygen electrocatalysts in energy conversion and storage technologies.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Alloyed Palladium Silver Nanowires Enabling Ultrastable Carbon Dioxide Reduction to Formate

Na Han et al.

Summary: Alloying palladium with silver significantly enhances electrocatalytic stability, leading to outstanding performance in selective formate production. The enhanced CO tolerance and selective stabilization of key reaction intermediates on the alloy nanowires contribute to the impressive long-term stability observed.

ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Atomically Precise Noble Metal Nanoclusters as Efficient Catalysts: A Bridge between Structure and Properties

Yuanxin Du et al.

CHEMICAL REVIEWS (2020)

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Review Materials Science, Multidisciplinary

Materials, technological status, and fundamentals of PEM fuel cells - A review

Yun Wang et al.

MATERIALS TODAY (2020)

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Review Chemistry, Physical

Review on current research of materials, fabrication and application for bipolar plate in proton exchange membrane fuel cell

Yuxi Song et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Article Chemistry, Multidisciplinary

Intermetallic PtBi Nanoplates Boost Oxygen Reduction Catalysis with Superior Tolerance over Chemical Fuels

Yonggang Feng et al.

ADVANCED SCIENCE (2020)

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Article Materials Science, Multidisciplinary

3D ordered mesoporous cobalt ferrite phosphides for overall water splitting

Yarong Huang et al.

SCIENCE CHINA-MATERIALS (2020)

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Surface Ru enriched structurally ordered intermetallic PtFe@PtRuFe core-shell nanostructure boosts methanol oxidation reaction catalysis

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Pt/Pd Single-Atom Alloys as Highly Active Electrochemical Catalysts and the Origin of Enhanced Activity

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Tungsten-Doped L10-PtCo Ultrasmall Nanoparticles as a High-Performance Fuel Cell Cathode

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An efficient ultrathin PtFeNi Nanowire/Ionic liquid conjugate electrocatalyst

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Alkaline Anion-Exchange Membrane Fuel Cells: Challenges in Electrocatalysis and Interfacial Charge Transfer

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Recent approaches to improve Nafion performance for fuel cell applications: A review

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Development of robust Pt shell through organic hydride donor in PtCo@Pt core-shell electrocatalysts for highly stable proton exchange membrane fuel cells

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Climbing the Apex of the ORR Volcano Plot via Binuclear Site Construction: Electronic and Geometric Engineering

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Unconventional p-d Hybridization Interaction in PtGa Ultrathin Nanowires Boosts Oxygen Reduction Electrocatalysis

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Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells

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Atomically ordered non-precious Co3Ta intermetallic nanoparticles as high-performance catalysts for hydrazine electrooxidation

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Activity Origin and Multifunctionality of Pt-Based Intermetallic Nanostructures for Efficient Electrocatalysis

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Opportunities and Challenges of Interface Engineering in Bimetallic Nanostructure for Enhanced Electrocatalysis

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Nanoscale Structure Design for High-Performance Pt-Based ORR Catalysts

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Promoting Electrocatalysis upon Aerogels

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Tuning Surface Structure of Pd3Pb/PtnPb Nanocrystals for Boosting the Methanol Oxidation Reaction

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Fully Tensile Strained Pd3Pb/Pd Tetragonal Nanosheets Enhance Oxygen Reduction Catalysis

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Intermetallic PtBi core/ultrathin Pt shell nanoplates for efficient and stable methanol and ethanol electro-oxidization

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Revealing the atomic ordering of binary intermetallics using in situ heating techniques at multilength scales

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Electrochemical Energy Conversion on Intermetallic Compounds: A Review

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Structurally Ordered Fe3Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction

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Remarkable Improvement of the Catalytic Performance of PtFe Nanoparticles by Structural Ordering and Doping

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Morphology-Controlled Metal Sulfides and Phosphides for Electrochemical Water Splitting

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Pt-Based electrocatalysts with high atom utilization efficiency: from nanostructures to single atoms

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Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis

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Strain engineering of metal-based nanomaterials for energy electrocatalysis

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Platinum Group Nanowires for Efficient Electrocatalysis

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Tunable synthesis of multiply twinned intermetallic Pd3Pb nanowire networks toward efficient N2 to NH3 conversion

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Modulating the surface segregation of PdCuRu nanocrystals for enhanced all-pH hydrogen evolution electrocatalysis

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Control of crystallographic phases and surface characterization of intermetallic platinum tin nanoparticles

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Intermetallic Pd3Pb ultrathin nanoplate-constructed flowers with low-coordinated edge sites boost oxygen reduction performance

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The role of hydrogen and fuel cells in the global energy system

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Intermetallic Pd3Pb square nanoplates as highly efficient electrocatalysts for oxygen reduction reaction

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Cu induced low temperature ordering of fct-FePtCu nanoparticles prepared by solution phase synthesis

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Atomically dispersed metal catalysts for the oxygen reduction reaction: synthesis, characterization, reaction mechanisms and electrochemical energy applications

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Electronic-Structure Tuning of Water-Splitting Nanocatalysts

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Atomic Arrangement Engineering of Metallic Nanocrystals for Energy-Conversion Electrocatalysis

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Synergetic Effect of Ni-Substituted Pd2Ge Ordered Intermetallic Nanocomposites for Efficient Electrooxidation of Ethanol in Alkaline Media

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Ordered platinum-bismuth intermetallic clusters with Pt-skin for a highly efficient electrochemical ethanol oxidation reaction

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Building Random Alloy Surfaces from Intermetallic Seeds: A General Route to Strain-Engineered Electrocatalysts with High Durability

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Unusual strain effect of a Pt- based L10 face- centered tetragonal core in core/ shell nanoparticles for the oxygen reduction reaction

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Structurally ordered PtSn intermetallic nanoparticles supported on ATO for efficient methanol oxidation reaction

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Strategies to Break the Scaling Relation toward Enhanced Oxygen Electrocatalysis

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Rational design of ordered Pd-Pb nanocubes as highly active, selective and durable catalysts for solvent-free benzyl alcohol oxidation

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Scalable Preparation of the Chemically Ordered Pt-Fe-Au Nanocatalysts with High Catalytic Reactivity and Stability for Oxygen Reduction Reactions

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Vertex-Reinforced PtCuCo Ternary Nanoframes as Efficient and Stable Electrocatalysts for the Oxygen Reduction Reaction and the Methanol Oxidation Reaction

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Random Alloyed versus Intermetallic Nanoparticles: A Comparison of Electrocatalytic Performance

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Crystal Phase and Architecture Engineering of Lotus-Thalamus-Shaped Pt-Ni Anisotropic Superstructures for Highly Efficient Electrochemical Hydrogen Evolution

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Stable High-Index Faceted Pt Skin on Zigzag-Like PtFe Nanowires Enhances Oxygen Reduction Catalysis

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MOF-Confined Sub-2 nm Atomically Ordered Intermetallic PdZn Nanoparticles as High-Performance Catalysts for Selective Hydrogenation of Acetylene

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Hollow PdCu2@Pt core@shell nanoparticles with ordered intermetallic cores as efficient and durable oxygen reduction reaction electrocatalysts

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Emerging Two-Dimensional Nanomaterials for Electrocatalysis

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Understanding Catalytic Activity Trends in the Oxygen Reduction Reaction

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Hollow nanoparticles as emerging electrocatalysts for renewable energy conversion reactions

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High-Loading Intermetallic Pt3Co/C Core-Shell Nanoparticles as Enhanced Activity Electrocatalysts toward the Oxygen Reduction Reaction (ORR)

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Unlocking the door to highly active ORR catalysts for PEMFC applications: polyhedron-engineered Pt-based nanocrystals

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Evaluation of performance and durability of platinum-iron-copper with L1(0) ordered face-centered tetragonal structure as cathode catalysts in polymer electrolyte fuel cells

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Strain Engineering to Enhance the Electrooxidation Performance of Atomic-Layer Pt on Intermetallic Pt3Ga

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Surface-Engineered PtNi-O Nanostructure with Record-High Performance for Electrocatalytic Hydrogen Evolution Reaction

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Pt-Richcore/Sn-Richsubsurface/Ptskin Nanocubes As Highly Active and Stable Electrocatalysts for the Ethanol Oxidation Reaction

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Fe Stabilization by Intermetallic L1(0)-FePt and Pt Catalysis Enhancement in L1(0)-FePt/Pt Nanoparticles for Efficient Oxygen Reduction Reaction in Fuel Cells

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In Situ X-ray Scattering Guides the Synthesis of Uniform PtSn Nanocrystals

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Ordered Pt3Co Intermetallic Nanoparticles Derived from Metal-Organic Frameworks for Oxygen Reduction

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Facile synthesis based on novel carbon-supported cyanogel of structurally ordered Pd3Fe/C as electrocatalyst for formic acid oxidation

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Conversion of confined metal@ZIF-8 structures to intermetallic nanoparticles supported on nitrogen-doped carbon for electrocatalysis

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Fabrication, Characterization and Cytotoxicity of Spherical-Shaped Conjugated Gold-Cockle Shell Derived Calcium Carbonate Nanoparticles for Biomedical Applications

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Electrode for proton exchange membrane fuel cells: A review

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The role of hydrogen in low carbon energy futures-A review of existing perspectives

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Promoting the Direct H2O2 Generation Catalysis by Using Hollow Pd-Sn Intermetallic Nanoparticles

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Selective control of fcc and hcp crystal structures in Au-Ru solid-solution alloy nanoparticles

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Intermetallic hcp-PtBi/fcc-Pt Core/Shell Nanoplates Enable Efficient Bifunctional Oxygen Reduction and Methanol Oxidation Electrocatalysis

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Recent Advances of Structurally Ordered Intermetallic Nanoparticles for Electrocatalysis

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Three-Dimensional Pd3Pb Nanosheet Assemblies: High-Performance Non-Pt Electrocatalysts for Bifunctional Fuel Cell Reactions

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Hexapod PtRuCu Nanocrystalline Alloy for Highly Efficient and Stable Methanol Oxidation

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Ordered PtPb/PtCore/Shell Nanodisks as Highly Active, Selective, and Stable Catalysts for Methanol Reformation to H-2

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Effects of crystal phase and composition on structurally ordered Pt-Co-Ni/C ternary intermetallic electrocatalysts for the formic acid oxidation reaction

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Atomic rearrangement from disordered to ordered Pd-Fe nanocatalysts with trace amount of Pt decoration for efficient electrocatalysis

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Designing of stable and highly efficient ordered Pt2CoNi ternary alloy electrocatalyst: The origin of dioxygen reduction activity

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Fabrication, Characterization and Cytotoxicity of Spherical-Shaped Conjugated Gold-Cockle Shell Derived Calcium Carbonate Nanoparticles for Biomedical Applications

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Hierarchical mesoporous Co3O4@ZnCo2O4 hybrid nanowire arrays supported on Ni foam for high-performance asymmetric supercapacitors

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Batteries and fuel cells for emerging electric vehicle markets

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Coupled s-p-d Exchange in Facet-Controlled Pd3Pb Tripods Enhances Oxygen Reduction Catalysis

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Metal Surface and Interface Energy Electrocatalysis: Fundamentals, Performance Engineering, and Opportunities

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Ultrathin PtPd-Based Nanorings with Abundant Step Atoms Enhance Oxygen Catalysis

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Copper-Induced Formation of Structurally Ordered Pt-Fe-Cu Ternary Intermetallic Electrocatalysts with Tunable Phase Structure and Improved Stability

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Concavity Tuning of Intermetallic Pd-Pb Nanocubes for Selective Semihydrogenation Catalysis

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Revealing Electronic Influences in the Semihydrogenation of Acetylene

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Coordination of Atomic Co-Pt Coupling Species at Carbon Defects as Active Sites for Oxygen Reduction Reaction

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Optimized Pt-Based Catalysts for Oxygen Reduction Reaction in Alkaline Solution: A First Principle Study

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PDA-assisted formation of ordered intermetallic CoPt3 catalysts with enhanced oxygen reduction activity and stability

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First-principles database driven computational neural network approach to the discovery of active ternary nanocatalysts for oxygen reduction reaction

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Nanoparticle Synthesis via Electrostatic Adsorption Using Incipient Wetness Impregnation

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Overcoming Site Heterogeneity In Search of Metal Nanocatalysts

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Surface/Interfacial Engineering of Inorganic Low-Dimensional Electrode Materials for Electrocatalysis

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Nanoporous (Pt1-xCox)3Al intermetallic compound as a high-performance catalyst for oxygen reduction reaction

Rui-Qi Yao et al.

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Changes in Catalytic and Adsorptive Properties of 2 nm Pt3Mn Nanoparticles by Subsurface Atoms

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Favorable Core/Shell Interface within Co2P/Pt Nanorods for Oxygen Reduction Electrocatalysis

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Halide Ion-Mediated Synthesis of L10-FePt Nanoparticles with Tunable Magnetic Properties

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Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks

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Core/shellCu/FePtCu nanoparticles with face-centered tetragonal texture: An active and stable low-Pt catalyst for enhanced oxygen reduction

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Intermetallic Pd3Pb Nanoplates Enhance Oxygen Reduction Catalysis with Excellent Methanol Tolerance

Kai Wang et al.

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Intermetallic Compounds: Promising Inorganic Materials for Well-Structured and Electronically Modified Reaction Environments for Efficient Catalysis

Shinya Furukawa et al.

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Beyond Strain and Ligand Effects: Microstrain-Induced Enhancement of the Oxygen Reduction Reaction Kinetics on Various PtNi/C Nanostructures

Raphael Chattot et al.

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Tuning Multimetallic Ordered Intermetallic Nanocrystals for Efficient Energy Electrocatalysis

Mingchuan Luo et al.

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Direct liquid fuel cells: A review

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2017)

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Incorporation of cobalt into Pd2Sn intermetallic nanoparticles as durable oxygen reduction electrocatalyst

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Asymmetric Volcano Trend in Oxygen Reduction Activity of Pt and Non-Pt Catalysts: In Situ Identification of the Site-Blocking Effect

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Synthesis of Pt3Y and Other Early-Late Intermetallic Nanoparticles by Way of a Molten Reducing Agent

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Highly Active and Selective Hydrogenation of CO2 to Ethanol by Ordered Pd-Cu Nanoparticles

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PtPb/PtNi Intermetallic Core/Atomic Layer Shell Octahedra for Efficient Oxygen Reduction Electrocatalysis

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Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts

Nigel Becknell et al.

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Sub-4 nm PtZn Intermetallic Nanoparticles for Enhanced Mass and Specific Activities in Catalytic Electrooxidation Reaction

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Toward Rational Design of Oxide-Supported Single-Atom Catalysts: Atomic Dispersion of Gold on Ceria

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Lattice Contracted Ordered Intermetallic Core-Shell PtCo@Pt Nanoparticles: Synthesis, Structure and Origin for Enhanced Oxygen Reduction Reaction

Wenhua Yang et al.

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Facet-Dependent Deposition of Highly Strained Alloyed Shells on Intermetallic Nanoparticles for Enhanced Electrocatalysis

Chenyu Wang et al.

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High-Indexed Pt3Ni Alloy Tetrahexahedral Nanoframes Evolved through Preferential CO Etching

Chenyu Wang et al.

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N-doped carbon-stabilized PtCo nanoparticles derived from Pt@ZIF-67: Highly active and durable catalysts for oxygen reduction reaction

Nana Du et al.

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Enhancing electrochemical detection of dopamine via dumbbell-like FePt-Fe3O4 nanoparticles

Weiwei Yang et al.

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Synthesis of ultrasmall, homogeneously alloyed, bimetallic nanoparticles on silica supports

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Combining theory and experiment in electrocatalysis: Insights into materials design

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Why conclusions from platinum model surfaces do not necessarily lead to enhanced nanoparticle catalysts for the oxygen reduction reaction

Federico Calle-Vallejo et al.

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Platinum-nickel alloy excavated nano-multipods with hexagonal close-packed structure and superior activity towards hydrogen evolution reaction

Zhenming Cao et al.

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Intermetallic Pd3Pb nanowire networks boost ethanol oxidation and oxygen reduction reactions with significantly improved methanol tolerance

Qiurong Shi et al.

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A comprehensive review of Pt electrocatalysts for the oxygen reduction reaction: Nanostructure, activity, mechanism and carbon support in PEM fuel cells

Sheng Sui et al.

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Strain-controlled electrocatalysis on multimetallic nanomaterials

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Efficient oxygen reduction catalysis by subnanometer Pt alloy nanowires

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Defect Chemistry of Nonprecious-Metal Electrocatalysts for Oxygen Reactions

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Application of X-ray Diffraction and Electron Crystallography for Solving Complex Structure Problems

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Accelerating oxygen reduction on Pt monolayer via substrate compression

Xilin Zhang et al.

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Synthesis of Chemically Ordered Pt3Fe/C Intermetallic Electrocatalysts for Oxygen Reduction Reaction with Enhanced Activity and Durability via a Removable Carbon Coating

Chanwon Jung et al.

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The study of platinum-tellurium intermetallic nanoparticles for formic acid electro-oxidation

Feilong Zhou et al.

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Ni3FeN-Supported Fe3Pt Intermetallic Nanoalloy as a High-Performance Bifunctional Catalyst for Metal-Air Batteries

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Elucidating the Mechanisms Driving the Aging of Porous Hollow PtNi/C Nanoparticles by Means of COads Stripping

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Alloy vs. intermetallic compounds: Effect of the ordering on the electrocatalytic activity for oxygen reduction and the stability of low temperature fuel cell catalysts

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The electrochemistry of intermetallic compounds: A mini-review

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High-Index Facets Bounded Platinum-Lead Concave Nanocubes with Enhanced Electrocatalytic Properties

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Recent Advances in Ultrathin Two-Dimensional Nanomaterials

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Enhanced Electrocatalytic Activity of Carbon-Supported Ordered Intermetallic Palladium-Lead (Pd3Pb) Nanoparticles toward Electrooxidation of Formic Acid

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Intermetallic Nanocrystals: Syntheses and Catalytic Applications

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Silica-Encapsulated Pt-Sn Intermetallic Nanoparticles: A Robust Catalytic Platform for Parahydrogen-Induced Polarization of Gases and Liquids

Evan W. Zhao et al.

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Electrocatalytic Activity and Stability of Ordered Intermetallic Palladium-Iron Nanoparticles toward Oxygen Reduction Reaction

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Scalable Nanoporous (Pt1-xNix)3Al Intermetallic Compounds as Highly Active and Stable Catalysts for Oxygen Electroreduction

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Size-Dependent Disorder-Order Transformation in the Synthesis of Monodisperse Intermetallic PdCu Nanocatalysts

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Structural Evolution of Solid Pt Nanoparticles to a Hollow PtFe Alloy with a Pt-Skin Surface via Space-Confined Pyrolysis and the Nanoscale Kirkendall Effect

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Kinetically Controlling Surface Structure to Construct Defect-Rich Intermetallic Nanocrystals: Effective and Stable Catalysts

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Tuning Nanowires and Nanotubes for Efficient Fuel-Cell Electrocatalysis

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One-Pot Synthesis of Highly Anisotropic Five-Fold-Twinned PtCu Nanoframes Used as a Bifunctional Electrocatalyst for Oxygen Reduction and Methanol Oxidation

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Ordered PdCu-Based Nanoparticles as Bifunctional Oxygen-Reduction and Ethanol-Oxidation Electrocatalysts

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Interface Engineering of MoS2/Ni3S2 Heterostructures for Highly Enhanced Electrochemical Overall-Water-Splitting Activity

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Bimetallic Nanocrystals: Syntheses, Properties, and Applications

Kyle D. Gilroy et al.

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Recent Advances in Electrocatalysts for Oxygen Reduction Reaction

Minhua Shao et al.

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Platinum-titanium intermetallic nanoparticle catalysts for oxygen reduction reaction with enhanced activity and durability

Jiwhan Kim et al.

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Sonochemical Formation of Ga-Pt Intermetallic Nanoparticles Embedded in Graphene and its Potential Use as an Electrocatalyst

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Low temperature and surfactant-free synthesis of Pd2Sn intermetallic nanoparticles for ethanol electro-oxidation

Congmin Wang et al.

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Catalysts in direct ethanol fuel cell (DEFC): An overview

M. A. F. Akhairi et al.

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Ag-Pt Compositional Intermetallics Made from Alloy Nanoparticles

Yung-Tin Pan et al.

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Rh-Doped Pt-Ni Octahedral Nanoparticles: Understanding the Correlation between Elemental Distribution, Oxygen Reduction Reaction, and Shape Stability

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Shaping electrocatalysis through tailored nanomaterials

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Hydrogen production from renewable and sustainable energy resources: Promising green energy carrier for clean development

Seyed Ehsan Hosseini et al.

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Direct and continuous strain control of catalysts with tunable battery electrode materials

Haotian Wang et al.

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Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction

Maria Escudero-Escribano et al.

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Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis

Lingzheng Bu et al.

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Ultrafine jagged platinum nanowires enable ultrahigh mass activity for the oxygen reduction reaction

Mufan Li et al.

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Theoretical Heterogeneous Catalysis: Scaling Relationships and Computational Catalyst Design

Jeffrey Greeley

ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 7 (2016)

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Surface engineering of hierarchical platinum-cobalt nanowires for efficient electrocatalysis

Lingzheng Bu et al.

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A Ship-in-a-Bottle Strategy To Synthesize Encapsulated Intermetallic Nanoparticle Catalysts: Exemplified for Furfural Hydrogenation

Raghu V. Maligal-Ganesh et al.

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PdZn Intermetallic Nanostructure with Pd-Zn-Pd Ensembles for Highly Active and Chemoselective Semi-Hydrogenation of Acetylene

Huiran Zhou et al.

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Direct access to aggregation-free and small intermetallic nanoparticles in ordered, large-pore mesoporous carbon for an electrocatalyst

Yeongdong Mun et al.

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Nanoporous (Pt1-xFex)3Al intermetallic compounds for greatly enhanced oxygen electroreduction catalysis

Tuo Cheng et al.

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Facile solvothermal synthesis of highly active and robust Pd1.87Cu0.11Sn electrocatalyst towards direct ethanol fuel cell applications

Rajkumar Jana et al.

MATERIALS RESEARCH EXPRESS (2016)

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Nanostructured electrocatalysts with tunable activity and selectivity

Hemma Mistry et al.

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Beneficial Role of Copper in the Enhancement of Durability of Ordered Intermetallic PtFeCu Catalyst for Electrocatalytic Oxygen Reduction

Balamurugan Arumugam et al.

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Core/Shell Face-Centered Tetragonal FePd/Pd Nanoparticles as an Efficient Non-Pt Catalyst for the Oxygen Reduction Reaction

Guangming Jiang et al.

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From Bimetallic Metal-Organic Framework to Porous Carbon: High Surface Area and Multicomponent Active Dopants for Excellent Electrocatalysis

Yu-Zhen Chen et al.

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Carbon-Supported Pt-Based Alloy Electrocatalysts for the Oxygen Reduction Reaction in Polymer Electrolyte Membrane Fuel Cells: Particle Size, Shape, and Composition Manipulation and Their Impact to Activity

Yan-Jie Wang et al.

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Atomically-thin two-dimensional sheets for understanding active sites in catalysis

Yongfu Sun et al.

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Recent advancements in Pt and Pt-free catalysts for oxygen reduction reaction

Yao Nie et al.

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Ordered Pd2Ge Intermetallic Nanoparticles as Highly Efficient and Robust Catalyst for Ethanol Oxidation

Sumanta Sarkar et al.

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Structurally Ordered Pt3Cr as Oxygen Reduction Electrocatalyst: Ordering Control and Origin of Enhanced Stability

Zhiming Cui et al.

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PtBi intermetallic and PtBi intermetallic with the Bi-rich surface supported on porous graphitic carbon towards HCOOH electro-oxidation

Bin-Wei Zhang et al.

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Promoted C-C bond cleavage over intermetallic TaPt3 catalyst toward low-temperature energy extraction from ethanol

Rajesh Kodiyath et al.

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Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation

F. Bortoloti et al.

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Nanobranched porous palladium-tin intermetallics: One-step synthesis and their superior electrocatalysis towards formic acid oxidation

Dandan Sun et al.

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One-Step, Facile and Ultrafast Synthesis of Phase- and Size-Controlled Pt-Bi Intermetallic Nanocatalysts through Continuous-Flow Microfluidics

Dongtang Zhang et al.

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Size-Dependent Electrocatalytic Reduction of CO2 over Pd Nanoparticles

Dunfeng Gao et al.

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Enhanced Cycling Stability of Hybrid Li-Air Batteries Enabled by Ordered Pd3Fe Intermetallic Electrocatalyst

Zhiming Cui et al.

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Highly Durable and Active PtFe Nanocatalyst for Electrochemical Oxygen Reduction Reaction

Dong Young Chung et al.

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Atomic Structure of Pt3Ni Nanoframe Electrocatalysts by in Situ X-ray Absorption Spectroscopy

Nigel Becknell et al.

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New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid

Qing Li et al.

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Morphology and Activity Tuning of Cu3Pt/C Ordered Intermetallic Nanoparticles by Selective Electrochemical Dealloying

Deli Wang et al.

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Conversion of PtNi alloy from disordered to ordered for enhanced activity and durability in methanol-tolerant oxygen reduction reactions

Liangliang Zou et al.

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Solvothermal synthesis of metal nanocrystals and their applications

Jianping Lai et al.

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Ordering and surface segregation in Co 1-c Ptc nanoparticles: A theoretical study from surface alloys to nanoalloys

A. Lopes et al.

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High-performance transition metal-doped Pt3Ni octahedra for oxygen reduction reaction

Xiaoqing Huang et al.

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DFT calculation analysis of oxygen reduction activity and stability of bimetallic catalysts with Pt-segregated surface

Lihui Ou et al.

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Surface faceting and elemental diffusion behaviour at atomic scale for alloy nanoparticles during in situ annealing

Miaofang Chi et al.

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DFT Study of Oxygen Reduction Reaction on Os/Pt Core-Shell Catalysts Validated by Electrochemical Experiment

Ho-Cheng Tsai et al.

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Mechanistic Study on Aerobic Oxidation of Amine over Intermetallic Pd3Pb: Concerted Promotion Effects by Pb and Support Basicity

Shinya Furukawa et al.

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Embedding Pt Nanocrystals in N-Doped Porous Carbon/Carbon Nanotubes toward Highly Stable Electrocatalysts for the Oxygen Reduction Reaction

Lin Guo et al.

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Oxygen Reduction in Alkaline Media: From Mechanisms to Recent Advances of Catalysts

Xiaoming Ge et al.

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Development of Highly Stable and Mass Transfer-Enhanced Cathode Catalysts: Support-Free Electrospun Intermetallic FePt Nanotubes for Polymer Electrolyte Membrane Fuel Cells

Jaehyuk Lee et al.

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Ordered intermetallic PtFe@Pt core-shell nanoparticles supported on carbon nanotubes with superior activity and durability as oxygen reduction reaction electrocatalysts

Haijing Liu et al.

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Structurally ordered Pt-Zn/C series nanoparticles as efficient anode catalysts for formic acid electrooxidation

Jing Zhu et al.

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Recent Advances on Electro-Oxidation of Ethanol on Pt- and Pd-Based Catalysts: From Reaction Mechanisms to Catalytic Materials

Ye Wang et al.

CATALYSTS (2015)

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X-ray absorption fine structure spectroscopy in nanomaterials

Zhihu Sun et al.

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Mesostructured Intermetallic Compounds of Platinum and Non-Transition Metals for Enhanced Electrocatalysis of Oxygen Reduction Reaction

Xing-You Lang et al.

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Architectural Design of Heterogeneous Metallic Nanocrystals-Principles and Processes

Yue Yu et al.

ACCOUNTS OF CHEMICAL RESEARCH (2014)

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Stimulation of Electro-oxidation Catalysis by Bulk-Structural Transformation in Intermetallic ZrPt3 Nanoparticles

Gubbala V. Ramesh et al.

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Shape-Controlled Synthesis of Hybrid Nanomaterials via Three-Dimensional Hydrodynamic Focusing

Mengqian Lu et al.

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Electrochemically Induced Surface Metal Migration in Well-Defined Core-Shell Nanoparticles and Its General Influence on Electrocatalytic Reactions

Casey N. Brodsky et al.

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Fast Prediction of Adsorption Properties for Platinum Nanocatalysts with Generalized Coordination Numbers

Federico Calle-Vallejo et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2014)

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PdTex/C nanocatalysts with high catalytic activity for ethanol electro-oxidation in alkaline medium

Jindi Cai et al.

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Carbon as catalyst and support for electrochemical energy conversion

Panagiotis Trogadas et al.

CARBON (2014)

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Ultra-low overpotential and high rate capability in Li-O2 batteries through surface atom arrangement of PdCu nanocatalysts

Ran Choi et al.

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Beneficial compressive strain for oxygen reduction reaction on Pt (111) surface

Shyam Kattel et al.

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Highly active and durable chemically ordered Pt-Fe-Co intermetallics as cathode catalysts of membrane-electrode assemblies in polymer electrolyte fuel cells

Takanori Tamaki et al.

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Synthesis of Structurally Ordered Pt3Ti and Pt3V Nanoparticles as Methanol Oxidation Catalysts

Zhiming Cui et al.

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Nanocatalyst Superior to Pt for Oxygen Reduction Reactions: The Case of Core/Shell Ag(Au)/CuPd Nanoparticles

Shaojun Guo et al.

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Core/Shell Au/CuPt Nanoparticles and Their Dual Electrocatalysis for Both Reduction and Oxidation Reactions

Xiaolian Sun et al.

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Tuning Nanoparticle Structure and Surface Strain for Catalysis Optimization

Sen Zhang et al.

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Synthesis of Colloidal Metal Nanocrystals in Droplet Reactors: The Pros and Cons of Interfacial Adsorption

Lei Zhang et al.

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Synthesis and electrocatalytic properties of PtBi nanoplatelets and PdBi nanowires

Hanbin Liao et al.

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Direct chemical synthesis of L1(0)-FePtAu nanoparticles with high coercivity

Yongsheng Yu et al.

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A fracture-resistant high-entropy alloy for cryogenic applications

Bernd Gludovatz et al.

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Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces

Chen Chen et al.

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Gold-promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction

Kurian A. Kuttiyiel et al.

NATURE COMMUNICATIONS (2014)

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Enhanced activity and durability for the electroreduction of oxygen at a chemically ordered intermetallic PtFeCo catalyst

Balamurugan Arumugam et al.

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NbPt3 Intermetallic Nanoparticles: Highly Stable and CO-Tolerant Electrocatalyst for Fuel Oxidation

Gubbala V. Ramesh et al.

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Pt/Sn Intermetallic, Core/Shell and Alloy Nanoparticles: Colloidal Synthesis and Structural Control

Xiaodong Wang et al.

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Coalescence in the Thermal Annealing of Nanoparticles: An in Situ STEM Study of the Growth Mechanisms of Ordered Pt-Fe Nanoparticles in a KCl Matrix

Hao Chen et al.

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Shape-Controlled Synthesis of Monodisperse PdCu Nanocubes and Their Electrocatalytic Properties

Qiang Gao et al.

CHEMSUSCHEM (2013)

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Review: Direct ethanol fuel cells

M. Z. F. Kamarudin et al.

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Bimetallic Co-Pd catalysts: Study of preparation methods and their influence on the selective hydrogenation of acetylene

W. G. Menezes et al.

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Atomic Ordering Enhanced Electrocatalytic Activity of Nanoalloys for Oxygen Reduction Reaction

Rameshwori Loukrakpam et al.

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Activity Descriptor Identification for Oxygen Reduction on Nonprecious Electrocatalysts: Linking Surface Science to Coordination Chemistry

Nagappan Ramaswamy et al.

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One-Pot Synthesis of Urchin-like FePd-Fe3O4 and Their Conversion into Exchange-Coupled L10-FePd-Fe Nanocomposite Magnets

Yongsheng Yu et al.

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Order-Induced Selectivity Increase of Cu60Pd40 in the Semi-Hydrogenation of Acetylene

Matthias Friedrich et al.

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Recent progress in the development of anode and cathode catalysts for direct methanol fuel cells

Jitendra N. Tiwari et al.

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Synthesis, Shape Control, and Methanol Electro-oxidation Properties of Pt-Zn Alloy and Pt3Zn Intermetallic Nanocrystals

Yijin Kang et al.

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Review of Pt-Based Bimetallic Catalysis: From Model Surfaces to Supported Catalysts

Weiting Yu et al.

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Applications of extended X-ray absorption fine-structure spectroscopy to studies of bimetallic nanoparticle catalysts

Anatoly I. Frenkel

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Ordered alloy formation for Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cuy/CO2-reduction electro-catalysts

L. Chen et al.

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Supported sub-5nm Pt-Fe intermetallic compounds for electrocatalytic application

Xiang Li et al.

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Comparison between Dealloyed PtCo3 and PtCu3 Cathode Catalysts for Proton Exchange Membrane Fuel Cells

Zhiqiang Yu et al.

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Local Ordering Changes in Pt-Co Nanocatalyst Induced by Fuel Cell Working Conditions

Giorgia Greco et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2012)

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A Surfactant-Free Strategy for Synthesizing, and Processing Intermetallic Platinum-Based Nanoparticle Catalysts

Hao Chen et al.

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One-Pot Synthesis of Cubic PtCu3 Nanocages with Enhanced Electrocatalytic Activity for the Methanol Oxidation Reaction

Bao Yu Xia et al.

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Structure-Induced Enhancement in Electrooxidation of Trimetallic FePtAu Nanoparticles

Sen Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Tuning Oxygen Reduction Reaction Activity via Controllable Dealloying: A Model Study of Ordered Cu3Pt/C Intermetallic Nanocatalysts

Deli Wang et al.

NANO LETTERS (2012)

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Electrocatalyst approaches and challenges for automotive fuel cells

Mark K. Debe

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Advanced Platinum Alloy Electrocatalysts for the Oxygen Reduction Reaction

Chao Wang et al.

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Universality in Oxygen Reduction Electrocatalysis on Metal Surfaces

Venkatasubramanian Viswanathan et al.

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Ordered intermediate compound PtBi-modified Pt/C catalyst for 2-propanol electrooxidation in alkaline medium

Yanyan Feng et al.

IONICS (2011)

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PtSn Intermetallic, Core-Shell, and Alloy Nanoparticles as CO-Tolerant Electrocatalysts for H-2 Oxidation

Zhufang Liu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2010)

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Advanced X-ray absorption and emission spectroscopy: in situ catalytic studies

Jagdeep Singh et al.

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Structurally Ordered FePt Nanoparticles and Their Enhanced Catalysis for Oxygen Reduction Reaction

Jaemin Kim et al.

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Synthesis and Electrocatalytic Properties of Cubic Mn-Pt Nanocrystals (Nanocubes)

Yijin Kang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2010)

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Article Chemistry, Multidisciplinary

Pd-Ga Intermetallic Compounds as Highly Selective Semihydrogenation Catalysts

Marc Armbruester et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2010)

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Article Chemistry, Multidisciplinary

Nanocrystalline intermetallics on mesoporous carbon for direct formic acid fuel cell anodes

Xiulei Ji et al.

NATURE CHEMISTRY (2010)

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Article Chemistry, Multidisciplinary

Modeling Size and Shape Effects on the Order-Disorder Phase-Transition Temperature of CoPt Nanoparticles

Weihong Qi et al.

SMALL (2010)

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Article Chemistry, Multidisciplinary

Dispersible Ferromagnetic FePt Nanoparticles

Jaemin Kim et al.

ADVANCED MATERIALS (2009)

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Article Chemistry, Physical

Synthesis of Intermetallic PtZn Nanoparticles by Reaction of Pt Nanoparticles with Zn Vapor and Their Application as Fuel Cell Catalysts

Akira Miura et al.

CHEMISTRY OF MATERIALS (2009)

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Review Chemistry, Multidisciplinary

Palladium in fuel cell catalysis

Ermete Antolini

ENERGY & ENVIRONMENTAL SCIENCE (2009)

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Article Chemistry, Physical

Etching of the intermetallic compounds PdGa and Pd3Ga7: An effective way to increase catalytic activity?

Kirill Kovnir et al.

JOURNAL OF CATALYSIS (2009)

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Article Chemistry, Multidisciplinary

Alloys of platinum and early transition metals as oxygen reduction electrocatalysts

J. Greeley et al.

NATURE CHEMISTRY (2009)

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Review Chemistry, Physical

Near-edge X-ray absorption fine-structure microscopy of organic and magnetic materials

Harald Ade et al.

NATURE MATERIALS (2009)

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Article Chemistry, Physical

Size and shape effects on the order-disorder phase transition in CoPt nanoparticles

D. Alloyeau et al.

NATURE MATERIALS (2009)

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Article Chemistry, Physical

From Core/Shell Structured FePt/Fe3O4/MgO to Ferromagnetic FePt Nanoparticles

Jaemin Kim et al.

CHEMISTRY OF MATERIALS (2008)

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Article Chemistry, Multidisciplinary

Synthesis and characterization of ordered intermetallic PtPb nanorods

Sean Maksimuk et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2007)

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Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfaces

Vojislav R. Stamenkovic et al.

NATURE MATERIALS (2007)

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Article Multidisciplinary Sciences

Improved oxygen reduction activity on Pt3Ni(111) via increased surface site availability

Vojislav R. Stamenkovic et al.

SCIENCE (2007)

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Article Chemistry, Multidisciplinary

Synthesis, characterization, and electrocatalytic activity of PtPb nanoparticles prepared by two synthetic approaches

Laif R. Alden et al.

LANGMUIR (2006)

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Review Chemistry, Multidisciplinary

Near edge X-ray absorption fine structure spectroscopy as a tool to probe electronic and structural properties of thin organic films and liquids

Georg Hahner

CHEMICAL SOCIETY REVIEWS (2006)

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Article Chemistry, Multidisciplinary

Reacting the unreactive: A toolbox of low-temperature solution-mediated reactions for the facile interconversion of nanocrystalline intermetallic compounds

Robert E. Cable et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2006)

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Article Chemistry, Physical

Synthesis, characterization, and electrocatalytic activity of PtBi and PtPb nanoparticles prepared by borohydride reduction in methanol

Chandrani Roychowdhury et al.

CHEMISTRY OF MATERIALS (2006)

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Article Chemistry, Multidisciplinary

Synthesis of FePt nanocubes and their oriented self-assembly

Min Chen et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2006)

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Article Chemistry, Multidisciplinary

Enhanced magnetic properties of self-assembled FePt nanoparticles with MnO shell

SS Kang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2006)

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Changing the activity of electrocatalysts for oxygen reduction by tuning the surface electronic structure

Vojislav Stamenkovic et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2006)

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Article Chemistry, Physical

Low-temperature solution synthesis of nanocrystalline binary intermetallic compounds using the polyol process

RE Cable et al.

CHEMISTRY OF MATERIALS (2005)

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Enhanced chemical ordering and coercivity in FePt alloy nanoparticles by Sb-doping

QY Yan et al.

ADVANCED MATERIALS (2005)

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Structural models and atomic distribution of bimetallic nanoparticles as investigated by X-ray absorption spectroscopy

BJ Hwang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2005)

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Electronic densities of states of several intermetallic compounds with large coordination numbers calculated within the framework of band theory

Y Imai et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2005)

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The perpendicular magnetic anisotropy of CoPt/Au multilayer films

T Yokota et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2005)

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Article Electrochemistry

Trends in the exchange current for hydrogen evolution

JK Norskov et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2005)

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Electrocatalytic activity of ordered intermetallic phases for fuel cell applications

E Casado-Rivera et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2004)

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Article Physics, Applied

Size dependence of ordering in FePt nanoparticles

YK Takahashi et al.

JOURNAL OF APPLIED PHYSICS (2004)

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Origin of the overpotential for oxygen reduction at a fuel-cell cathode

JK Norskov et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2004)

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Review Chemistry, Multidisciplinary

X-ray absorption Spectroscopy of low temperature fuel cell catalysts

AE Russell et al.

CHEMICAL REVIEWS (2004)

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Article Materials Science, Multidisciplinary

Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes

JW Yeh et al.

ADVANCED ENGINEERING MATERIALS (2004)

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Article Materials Science, Multidisciplinary

Crystal distortion and the magnetic moment of epitaxially grown alpha ''-Fe16N2

S Okamoto et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2000)

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