☆ 4.7 Review

Non-Noble Metal Catalysts in Cathodic Oxygen Reduction Reaction of Proton Exchange Membrane Fuel Cells: Recent Advances

NANOMATERIALS (2022)

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Article Chemistry, Physical

Design of Co-NC as efficient electrocatalyst: The unique structure and active site for remarkable durability of proton exchange membrane fuel cells

Kyungmin Im et al.

Summary: In this study, a unique Co-N-C catalyst with a developed pore structure was successfully synthesized using a melamine-encapsulated Co-ZnO-C composite. The catalyst showed superior stability and 4-electron oxygen reduction reaction (ORR) activity, due to the closed interaction between the Co-N4 moiety and organic adducts. Experimental results demonstrated that the Co-N-C catalyst exhibited remarkable durability with only 6.7% performance degradation after 100 hours, and high stability in real device operation.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Engineering, Environmental

Copper-involved highly efficient oxygen reduction reaction in both alkaline and acidic media

Zehua Yang et al.

Summary: This study developed nitrogen-doped porous carbon catalysts with single Cu atoms and Cu clusters as active sites, showing excellent ORR performance in both alkaline and acidic media. It not only provides a simple strategy for fabricating efficient catalysts, but also identifies the great potential of Cu-based materials for ORR.

CHEMICAL ENGINEERING JOURNAL (2022)

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Review Engineering, Environmental

Recent progress in single-atom alloys: Synthesis, properties, and applications in environmental catalysis

Zhiling Xu et al.

Summary: Single-atom alloys (SAAs) are novel environmental catalysts that combine the advantages of single atoms and alloys, maximizing atom utilization, reducing the use of noble metals, and enhancing catalytic performance. The synergistic, electronic and geometric effects of SAAs effectively modulate activation energy, break linear scaling relationships, and offer excellent catalytic activity and selectivity.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Review Physics, Applied

Double-atom catalysts for energy-related electrocatalysis applications: a theoretical perspective

Donghai Wu et al.

Summary: Atomically dispersed metal catalysts have attracted intensive research attention due to their excellent activity, selectivity, and stability. Recently, double-atom catalyst (DAC) with a metal dimer anchored on a substrate has emerged as a research focus for energy-related electrocatalysis reactions. DACs offer more possibilities to adjust geometrical configurations and electronic structures due to the flexible dual-metal sites and the synergetic effect between the two metal atoms. This review summarizes the theoretical research on DACs for diverse energy-related electrocatalytic reactions and highlights how their outstanding attributes affect reaction pathways, catalytic activity, and product selectivity.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2022)

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Article Chemistry, Physical

Atomically Dispersed Fe-Co Dual Metal Sites as Bifunctional Oxygen Electrocatalysts for Rechargeable and Flexible Zn-Air Batteries

Yuting He et al.

Summary: This study presents atomically dispersed Fe-Co dual metal sites derived from Fe and Co codoped zeolitic imidazolate frameworks, showing excellent bifunctional catalytic activity for ORR and OER in alkaline media. The FeCo-NC catalyst exhibits outstanding stability and is integrated into an air electrode for fabricating rechargeable and flexible Zn-air batteries, achieving a high power density and long-cycle stability. This work offers a method to design and synthesize atomically dispersed multi-metal site catalysts for advanced electrocatalysis.

ACS CATALYSIS (2022)

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Review Chemistry, Applied

Recent insights on iron based nanostructured electrocatalyst and current status of proton exchange membrane fuel cell for sustainable transport

Mohamedazeem M. Mohideen et al.

Summary: Bridging the performance gap of electrocatalysts is crucial for reducing the cost of proton exchange membrane fuel cell (PEMFC) vehicles. Platinum catalysts contribute to a significant portion of the total cost, while iron-based catalysts show promise in terms of cost-effectiveness and catalytic activity. However, there is a gap between the performance observed in laboratory tests and real operating conditions. Developing efficient iron-based catalysts is critical for commercializing PEMFC vehicles.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Physical

Multi-walled carbon nanotube supported manganese selenide as a highly active bifunctional OER and ORR electrocatalyst

Harish Singh et al.

Summary: In this article, a new Mn-based bifunctional electrocatalyst, MnSe, has been identified, which shows efficient oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) activity in alkaline medium. The catalytic activity is further enhanced by using multiwalled carbon nanotubes (MWCNTs). The MnSe@MWCNT catalyst exhibits a low overpotential, exceptional methanol tolerance, and compositional stability, making it attractive for regenerative and direct methanol fuel cells.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Physical

Nitrogen-coordinated single-atom catalysts with manganese and cobalt sites for acidic oxygen reduction

Guojie Chao et al.

Summary: This study developed an efficient catalyst based on Mn, Co, and N-co-doped carbon for acidic oxygen reduction reaction. Through analysis using electron microscopy, X-ray absorption spectroscopy, and Raman spectroscopy, it was found that the MnCo-N-C catalyst had a higher degree of graphitization, improving corrosion resistance and catalytic durability. After 50 hours of testing, the current retention of the MnCo-N-C catalyst was significantly higher (81%) compared to the Co-N-C catalyst.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Engineering, Environmental

Cu-N4 single atoms derived from metal-organic frameworks with trapped nitrogen-rich molecules and their use as efficient electrocatalysts for oxygen reduction reaction

Fenghong Lu et al.

Summary: To meet the demand for large-scale commercialization of proton-exchange membrane fuel cells and metal-air batteries, a novel strategy was developed to fabricate high-performance Cu-SAs/NSs. By adding nitrogen-rich molecules to promote the self-assembly of Cu/Zn bimetallic MOF, a highly porous structure and abundant Cu-N-4 active sites were formed, leading to remarkable ORR performance.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Electrochemistry

Synthetic strategies of single-atoms catalysts and applications in electrocatalysis

Jia Li et al.

Summary: This paper reviews the research progress of single-atom electrocatalysts in multiple energy conversion reactions. It discusses the synthesis methods, control of metal sites, and electrocatalysis applications. The challenges and future directions for nonprecious-metal single-atom electrocatalysts are identified.

ELECTROCHIMICA ACTA (2022)

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Article Chemistry, Physical

Molten salt-assisted carbonization and unfolding of Fe, Co-codoped ZIF-8 to engineer ultrathin graphite flakes for bifunctional oxygen electrocatalysis

Yingjie Chen et al.

Summary: In this study, a high-performance electrocatalyst with Fe, Co, and N doping was synthesized by using NaCl-assisted carbonization and unfolding method. The resulting material exhibited high specific surface area, porosity, and degree of defects, leading to excellent oxygen reduction reaction and oxygen evolution reaction properties. This synthesis method provides a feasible approach for designing high-performance electrocatalysts.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Electrochemistry

High-Platinum-Content Catalysts on Atomically Dispersed and Nitrogen Coordinated Single Manganese Site Carbons for Heavy-Duty Fuel Cells

Mengjie Chen et al.

Summary: A novel atomically dispersed and nitrogen coordinated carbon support was developed for high loading platinum catalysts in membrane electrode assemblies. Compared to the controls, this catalyst exhibited enhanced catalytic activity and stability for the oxygen reduction reaction, generating higher current density under heavy-duty vehicle conditions and maintaining good performance after 30,000 voltage cycles.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2022)

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Review Electrochemistry

Review-Single-Atom Catalysts as Promising Candidates for Single-Atom Catalysts as Promising Candidates for Electrochemical Applications

Somayeh Tajik et al.

Summary: This review article focuses on the recent applications of single-atom catalysts (SACs) in electrocatalysis, including CO2 reduction, oxygen evolution, hydrogen evolution, oxygen reduction, and electrochemical detection. By precise scientific design and controllable construction of SACs, cost-effective and environmentally friendly catalysts can be obtained.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Theoretically Revealed and Experimentally Demonstrated Synergistic Electronic Interaction of CoFe Dual-Metal Sites on N-doped Carbon for Boosting Both Oxygen Reduction and Evolution Reactions

Xuyan Zhou et al.

Summary: Heteronuclear double-atom catalysts modify the charge density of active metal sites and enhance catalytic activities. CoFe-N-C exhibits exceptional ORR and OER electro-catalytic activities in alkaline media.

NANO LETTERS (2022)

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Review Chemistry, Physical

Exploring Durable Single-Atom Catalysts for Proton Exchange Membrane Fuel Cells

Xin Wan et al.

Summary: This review explores the structure-stability relationship of Fe-N-C catalysts, providing valuable guidance for improved stability. Recent achievements include the discovery of several site-specific degradation mechanisms and identification of intrinsically stable active sites, and the discussion of Fe-free single-atom catalysts as an alternative solution.

ACS ENERGY LETTERS (2022)

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Article Chemistry, Physical

Atomically dispersed metal-nitrogen-carbon electrocatalysts for oxygen reduction reaction: from synthesis strategies to activity engineering

Dan Wang et al.

Summary: Atomically dispersed catalysts have great potential in energy and catalysis fields due to their high atom utilization efficiency, tunable electronic structures, and favorable catalytic performance. This article summarizes the effective synthesis strategies for achieving well-defined active dispersion and discusses activity engineering approaches for atomically dispersed metal nitrogen-carbon catalysts, with the aim of clarifying structure-property correlations.

MATERIALS TODAY ENERGY (2022)

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Article Chemistry, Physical

Cobalt phosphide nanoparticles encapsulated in manganese, nitrogen co-doped porous carbon nanosheets with rich nanoholes for high-efficiency oxygen reduction reaction

Qi-Dong Ruan et al.

Summary: This study presents a cost-effective and high-performance oxygen reduction electrocatalyst for renewable energy devices, which surpasses commercial Pt/C catalysts.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Review Materials Science, Multidisciplinary

Advances of atomically dispersed catalysts from single-atom to clusters in energy storage and conversion applications

Yongxia Wang et al.

Summary: This paper provides a comprehensive review of the recent progress in atomically dispersed catalysts (ADCs) ranging from single atoms to clusters. It focuses on the synthesis methods, stabilization strategies, performance evaluation, mechanistic understanding, and typical applications in energy storage and conversion.

PROGRESS IN MATERIALS SCIENCE (2022)

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Review Chemistry, Multidisciplinary

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

Chao Wang et al.

Summary: This review summarizes the recent progress in noble metal-based core-shell catalysts for oxygen reduction reactions in proton exchange membrane fuel cells. It highlights the effects of preparation methods, temperature, doping elements, and shell layers on the catalyst performance. The difficulties of mass production and high cost of these catalysts are also discussed. The review proposes research directions for the development of high-performance catalysts with simple synthesis and low cost.

NANOMATERIALS (2022)

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Article Engineering, Chemical

A Novel Control Algorithm of the Air Supply Subsystem: Based on Dynamic Modeling of Proton Exchange Membrane Fuel Cell

Pengyu Wang et al.

Summary: This paper proposes a novel second-order active disturbance rejection control (2-ADRC) algorithm to optimize the control of the air supply subsystem for Proton Exchange Membrane Fuel Cell (PEMFC). Through the establishment and verification of a dynamic Simulink model for the PEMFC system, considering the dynamic characteristics, the optimal oxygen excess ratio (OER) parameters under different load currents are obtained. The designed 2-ADRC algorithm can make the actual OER parameters close to the optimal values in real time, and comprehensively consider the two parameters of mass flow and pressure ratio to improve the net power and efficiency of the PEMFC system.

PROCESSES (2022)

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Article Chemistry, Physical

The strain induced synergistic catalysis of FeN4 and MnN3 dual-site catalysts for oxygen reduction in proton-/anion- exchange membrane fuel cells

Shiqing Huang et al.

Summary: A new Fe-Mn-N-C dual-atom catalyst has been synthesized in this study, which improves the activity of oxygen reduction reaction by tailoring its electronic structure, and exhibits excellent performance in proton/anion-exchange membrane fuel cells.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Physical

Design of PGM-free cathodic catalyst layers for advanced PEM fuel cells

Tatyana Reshetenko et al.

Summary: In this study, a cathodic catalysts layer (CCL) design was achieved using a catalyst coated membrane approach with Platinum Group Metal-free (PGM-free) electrocatalysts. Three different Fe-Mn-N-C compounds were synthesized and characterized, and their electrochemical properties were evaluated. It was found that the CCLs exhibited high proton conductivity and predominantly exhibited a 4e- oxygen reduction reaction mechanism.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Multidisciplinary

PGM-Free Oxygen-Reduction Catalyst Development for Proton-Exchange Membrane Fuel Cells: Challenges, Solutions, and Promises

Yanghua He et al.

Summary: In this Account, recent advances in synthesizing efficient PGM-free catalysts for proton-exchange membrane fuel cells (PEMFCs) were highlighted, with an emphasis on effective strategies to improve activity and stability. The formation mechanism of MN4 active sites and their correlation to catalytic properties were discussed, providing guidance for rational catalyst design. The trade-off between activity and stability was identified as a key challenge in developing efficient catalysts for PEMFCs.

ACCOUNTS OF MATERIALS RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Fe, Cu-codoped metal-nitrogen-carbon catalysts with high selectivity and stability for the oxygen reduction reaction

Yuemin Wang et al.

Summary: FeCu-based M-N-C catalysts exhibit higher selectivity and stability in the ORR, with lower peroxide yields compared to Fe-N-C. Additionally, FeCu-based M-N-C catalysts show only a 15 mV attenuation in their half-wave potentials after accelerated degradation tests.

CHINESE CHEMICAL LETTERS (2021)

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Article Chemistry, Multidisciplinary

Turning on Zn 4s Electrons in a N2-Zn-B2 Configuration to Stimulate Remarkable ORR Performance

Jing Wang et al.

Summary: A newly explored zinc-based single-atom catalyst with a unique N-2-Zn-B-2 configuration demonstrates impressive ORR activity and remarkable long-term stability, achieved through manipulating the s-band by constructing a B,N co-coordinated Zn-B/N-C catalyst.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Atomic-Level Modulation of Electronic Density at Cobalt Single-Atom Sites Derived from Metal-Organic Frameworks: Enhanced Oxygen Reduction Performance

Yuanjun Chen et al.

Summary: This study demonstrates the correlation between atomic configuration induced electronic density of single-atom Co active sites and oxygen reduction reaction (ORR) performance. The designed and synthesized Co-1-N3PS/HC catalyst shows outstanding ORR activity in alkaline and acidic media, surpassing Pt/C and most non-precious ORR electrocatalysts. Insights from this work promote rational design of efficient catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Engineering, Environmental

A highly efficient Fenton-like catalyst based on isolated diatomic Fe-Co anchored on N-doped porous carbon

Jingren Yang et al.

Summary: A highly efficient Fenton-like catalyst based on isolated diatomic Fe-Co anchored on N-doped porous carbon was reported, showing outstanding catalytic activity for BPA degradation. The unique FeCoN6 configuration and pyrrolic N adsorption site contribute to the ultra-high catalytic performance of the diatomic Fe-Co catalyst in the heterogeneous activation of peroxymonosulfate.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Physical

Cu-assisted induced atomic-level bivalent Fe confined on N-doped carbon concave dodecahedrons for acid oxygen reduction electrocatalysis

Yan Luo et al.

Summary: A novel FeCuNC catalyst with well confined bivalent Fe sites was successfully developed via a Cu-assisted induced strategy, delivering outstanding ORR performance in acidic media. This work provides a simple and efficient method to tune atomically dispersed active sites for promising PGM-free catalysts.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Chemistry, Multidisciplinary

Electrochemical Oxygen Reduction to Hydrogen Peroxide via a Two-Electron Transfer Pathway on Carbon-Based Single-Atom Catalysts

Kai Sun et al.

Summary: By characterizing the methods and reaction mechanisms of ORR via two-electron and four-electron transfer pathways, the role of binding strength between OOH intermediate and active sites in determining the activity and selectivity towards H2O2 production is revealed and illustrated.

ADVANCED MATERIALS INTERFACES (2021)

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Article Chemistry, Multidisciplinary

MOF Structure Engineering to Synthesize Co-N-C Catalyst with Richer Accessible Active Sites for Enhanced Oxygen Reduction

Jiaojiao Gao et al.

Summary: A new metal-organic framework (MOF) structure-engineering strategy was developed to synthesize accordion-like MOF with higher loading amount and better spatial isolation of Co using acetate (OAc) assistance. The resulting Co-N-C catalyst exhibited higher density of active sites and remarkable ORR activity in alkaline electrolytes, along with outstanding durability and tolerance to methanol in both alkaline and acidic media.

SMALL (2021)

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Article Chemistry, Physical

Impact of Heterometallic Cooperativity of Iron and Copper Active Sites on Electrocatalytic Oxygen Reduction Kinetics

Masaru Kato et al.

Summary: A Cu-, Fe-, and N-doped carbon nanotubes ORR electrocatalyst, (Cu,Fe)-N-CNT, was synthesized in this study, which showed a selective 4e(-) reduction efficiency of O-2 to H2O2 of about 99%, demonstrating higher catalytic activity and selectivity compared to other non-PGM catalysts. The research findings suggest that heterometallic cooperation has a significant impact on the ORR kinetics.

ACS CATALYSIS (2021)

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Article Chemistry, Physical

Atomic Zn Sites on N and S Codoped Biomass-Derived Graphene for a High-Efficiency Oxygen Reduction Reaction in both Acidic and Alkaline Electrolytes

Rong Jiang et al.

Summary: A novel catalyst, A-Zn@NSG, has been developed for oxygen reduction reaction with superior catalytic performance surpassing reported Zn-N-C-based catalysts and comparable to state-of-the-art non-precious-metal-based ORR catalysts. Experimental and computational results reveal the Zn-N-4 active site nature of the A-Zn@NSG catalyst, where the surrounding S atoms can donate electrons to atomic Zn centers, enhancing the binding of adsorbed O species and promoting the cleavage of the O-O bond of the adsorbed OOH species, resulting in heightened ORR activity.

ACS APPLIED ENERGY MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Novel Mn-/Co-Nx Moieties Captured in N-Doped Carbon Nanotubes for Enhanced Oxygen Reduction Activity and Stability in Acidic and Alkaline Media

Syed Shoaib Ahmad Shah et al.

Summary: A multi-step heating strategy was applied to produce mesoporous N-doped carbon nanostructures with dual-metallic active sites from mixed-metal zeolitic imidazolate frameworks. The unique structure of the catalyst not only offers high electrochemical performance for the ORR in acidic media, but also enhances operational durability. Additionally, the catalyst displays good performance for the ORR in alkaline solution.

ACS APPLIED MATERIALS & INTERFACES (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, Physical

First demonstration of phosphate enhanced atomically dispersed bimetallic FeCu catalysts as Pt-free cathodes for high temperature phosphoric acid doped polybenzimidazole fuel cells

Yi Cheng et al.

Summary: The study developed atomically dispersed bimetallic FeCu coordinated with nitrogen-doped carbon nanotubes (FeCu/N-CNTs) as Pt-free oxygen reduction reaction (ORR) electrocatalysts, which showed similar performance to Pt/C but with better stability and enhanced activity in the presence of phosphate. DFT calculations revealed that the phosphate promotion effect was due to stronger binding of phosphate on Cu sites, leading to lower activation energy barrier for O-2 cleavage. FeCu/N-CNTs were also found to have better ORR activity compared to Fe single atom catalysts coordinated with nitrogen-doped carbon nanotubes, Fe/N-CNTs. The results demonstrate the potential of FeCu/N-CNTs as true Pt-free, highly active and durable cathodes in high temperature polymer electrolyte fuel cells based on PA/PBI.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Energy & Fuels

High-dispersion Co-Fe-NC electrocatalyst based on leaf-shaped zeolite imidazole framework for oxygen-reduction reaction in acidic medium

Kyungmin Im et al.

Summary: The study synthesized core-shell-type leaf-shaped CoFe-NC catalysts, achieving highly dispersed CoFe-doped carbon with excellent performance and durability in acidic medium. When applied as a cathode in PEMFC, the catalyst demonstrated significant effectiveness.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2021)

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Article Chemistry, Multidisciplinary

Solid-State Synthesis of Highly Dispersed Nitrogen-Coordinated Single Iron Atom Electrocatalysts for Proton Exchange Membrane Fuel Cells

Fei Xiao et al.

Summary: Fe-N-C synthesized using Fe2O3 as the Fe precursor shows excellent ORR activity with high peak power density. This solid-state transformation synthesis method may pave the way for mass production of single-atom-based catalysts.

NANO LETTERS (2021)

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Article Multidisciplinary Sciences

Regulating Fe-spin state by atomically dispersed Mn-N in Fe-N-C catalysts with high oxygen reduction activity

Gege Yang et al.

Summary: The research uncovered the mechanism of the oxygen reduction reaction on dual-metal atomically dispersed Fe,Mn/N-C catalyst, demonstrating its excellent performance and durability in fuel cells and metal-air batteries.

NATURE COMMUNICATIONS (2021)

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Review Metallurgy & Metallurgical Engineering

Recent Progress in Carbon-based Materials of Non-Noble Metal Catalysts for ORR in Acidic Environment

Jie Lian et al.

Summary: This article discusses the importance of cathode electrocatalyst support materials in proton exchange membrane fuel cells (PEMFC) and highlights various new carbon-based materials introduced for this purpose. It also outlines strategies to improve the performance of electrocatalysts and their impact on the oxygen reduction reaction (ORR).

ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021)

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Article Chemistry, Applied

Insights into efficient transition metal-nitrogen/carbon oxygen reduction electrocatalysts

Hao-Yu Wang et al.

Summary: The importance of accelerating the sluggish oxygen reduction reaction (ORR) process at the cathode with earth-abundant metal-based catalysts for the commercialization of low-temperature polymer electrolyte membrane fuel cells is discussed. Transition metal-nitrogen-carbon (M-N/C) catalysts are considered as the most promising non-precious metal catalysts for ORR, due to their high catalytic activity, long-term stability, and low cost. Different M-N/C catalysts classified by precursors and strategies for design and optimization are highlighted, along with the challenges and possible opportunities for future development of high-performance ORR catalysts.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Rational Design of Highly Stable and Active MXene-Based Bifunctional ORR/OER Double-Atom Catalysts

Bo Wei et al.

Summary: Designing highly active and bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) catalysts with non-noble metals such as Fe/Co/Ni on MXene surfaces has shown superior performance compared to traditional unifunctional catalysts, providing a novel pathway for tunable catalytic behavior in MXenes. The electronic structure analyses revealed that the excellent catalytic activities in MXene-based DACs are attributed to the electron-capturing capability and synergistic interactions between Fe/Co/Ni adsorbents and MXene substrate. These findings not only suggest promising candidates for MXene-based bifunctional ORR/OER catalysts but also offer new theoretical insights into rationally designing noble-metal-free bifunctional DACs.

ADVANCED MATERIALS (2021)

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Article Chemistry, Physical

Enhanced performance of atomically dispersed dual-site Fe-Mn electrocatalysts through cascade reaction mechanism

Zhe Chen et al.

Summary: In this study, a novel dual-site electro-catalyst with atomically dispersed Fe/Mn-N-x-C dual metal sites embedded in N-doped carbon matrix was successfully designed and synthesized, showing excellent oxygen reduction reaction (ORR) activity and superior stability. The catalyst achieved high power density and specific energy density in Zn-air battery, surpassing most reported non-precious catalysts. The superior performance is attributed to a synergic dual-site cascade mechanism, as revealed by theoretical DFT calculations.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Physical

Co/N-doped carbon nanotubes-grafted porous carbon sheets architecture as efficient electrocatalyst for oxygen reduction reaction

Deying Leng et al.

Summary: This study introduces a low-cost and effective method to produce Co/N-CNT/PCS catalysts, which exhibit excellent ORR electrocatalytic activity, long-term stability, and potential as a major contender in the field of PEMFCs.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Multidisciplinary

Dual-Metal Hetero-Single-Atoms with Different Coordination for Efficient Synergistic Catalysis

Xin Zhao et al.

Summary: This study reports a novel deposition strategy for the fabrication of differently coordinated dual-metal hetero-single atom catalysts, showing significantly enhanced catalytic performances due to strong synergistic interactions between Cu and Co. The mechanism behind the superior catalytic activity may stem from the asymmetrically deployed CuC4 and CoN4 sites on the hierarchical carbon support.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Nanoscience & Nanotechnology

The role of supported dual-atom on graphitic carbon nitride for selective and efficient CO2 electrochemical reduction

Shuang Zhu et al.

Summary: The role of dual-metal atoms on graphite carbon nitride for selective and efficient CO2 electrochemical reduction was studied, and RuCu@g-CN and RuFe@g-CN were found to be the most promising electrocatalysts for CO2RR.

NANOTECHNOLOGY (2021)

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Review Polymer Science

Proton Exchange Membrane Fuel Cells (PEMFCs): Advances and Challenges

Miriam M. Tellez-Cruz et al.

Summary: The study of electrochemical catalyst conversion of renewable electricity and carbon oxides into chemical fuels is crucial for mitigating the global energy crisis. Research efforts are currently focused on developing high-performance membranes and nanomaterials with high catalytic activity to improve fuel cell performance and reduce the use of expensive platinum group metals.

POLYMERS (2021)

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Review Chemistry, Physical

Recent advances in the design of a high performance metal-nitrogen-carbon catalyst for the oxygen reduction reaction

Cheng-Wei Ye et al.

Summary: Developing efficient cathode oxygen reduction reaction (ORR) catalysts is crucial for the widespread application of fuel cells. Recent studies have made significant progress in designing high-performance M-N-C catalysts through strategies like increasing active site density, improving intrinsic activity, facilitating mass transfer, and avoiding linear scaling relationship.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Multidisciplinary

Recent advances in non-precious metal electrocatalysts for oxygen reduction in acidic media and PEMFCs: an activity, stability and mechanism study

Jiayao Cui et al.

Summary: The article discusses the current research status of PGM-free cathode catalysts for PEMFCs, focusing on the classification and characteristics of active M/N/C catalysts, analyzing the existing problems and challenges, and proposing future research directions.

GREEN CHEMISTRY (2021)

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Review Chemistry, Physical

Advanced Atomically Dispersed Metal-Nitrogen-Carbon Catalysts Toward Cathodic Oxygen Reduction in PEM Fuel Cells

Yijie Deng et al.

Summary: Research shows that atomically dispersed metal-nitrogen-carbon catalysts have significant potential in improving the oxygen reduction reaction and membrane electrode assembly performance of proton exchange membrane fuel cells, indicating promising avenues for addressing current bottlenecks in hydrogen energy conversion.

ADVANCED ENERGY MATERIALS (2021)

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Review Chemistry, Physical

Recent progress on the synthesis and oxygen reduction applications of Fe-based single-atom and double-atom catalysts

Yan Yan et al.

Summary: Fe-based atomic catalysts show great advantages in the ORR due to high atom-utilization efficiency and well-defined active sites. The high performance is mainly attributed to the coordination condition and electronic structures. Achieving high activity and stability with a high content of metal atoms remains a major challenge.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Energy & Fuels

Polymer electrolyte membrane fuel cell and hydrogen station networks for automobiles: Status, technology, and perspectives

Yun Wang et al.

Summary: The transportation sector accounts for a significant portion of total energy consumption in the U.S. Automobiles are increasingly incorporating polymer electrolyte membrane fuel cells to reduce fossil fuel consumption and CO2 emissions. While hydrogen fuel cells have shown promise in FCEVs and FCEBs, a more extensive hydrogen station network is needed for widespread deployment.

ADVANCES IN APPLIED ENERGY (2021)

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Review Chemistry, Multidisciplinary

Pyrolyzed M-Nx catalysts for oxygen reduction reaction: progress and prospects

Ergui Luo et al.

Summary: Recent research efforts on cost-effective catalysts in fuel cells, especially on the cathode, have shown promising advancements in the development of M-N-x/C materials. The focus has been on clarifying the nature of catalytic sites and utilizing advanced characterization tools to optimize synthesis methodologies. Future directions aim to achieve rational and controllable synthesis of catalysts with sufficient active sites and strategies to mitigate catalyst degradation.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Single-atom alloy catalysts: structural analysis, electronic properties and catalytic activities

Tianjun Zhang et al.

Summary: This review discusses the development and application of single-atom alloy catalysts, highlighting structural analysis at the atomic scale using microscopy and spectroscopy tools, electronic properties research through X-ray spectroscopy techniques and quantum calculations, and catalytic activity in representative reactions. It also proposes future perspectives for single-atom alloy catalysts from structural, electronic, and reactivity aspects.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Physical

Atomic Fe-Zn dual-metal sites for high-efficiency pH-universal oxygen reduction catalysis

Jie Xu et al.

Summary: The study demonstrated the preparation of Fe-Zn-SA/NC catalyst for efficient ORR reaction in all pH range, showing high half-wave potentials and stability, comparable to Pt/C. The Fe-Zn-SA/NC catalyst also exhibited high power density and durability when assembled into a Zn-air battery, indicating its potential for real energy-related devices. The theoretical calculations attribute the superior catalytic activity of Fe-Zn-SA/NC to the lower energy barriers of ORR at the Fe-Zn-N-6 centers, offering new insights for dual-atom catalysts in energy conversion related catalytic reactions.

NANO RESEARCH (2021)

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Review Materials Science, Multidisciplinary

Applications of Atomically Dispersed Oxygen Reduction Catalysts in Fuel Cells and Zinc-Air Batteries

Qiaoqiao Zhang et al.

Summary: Due to energy crisis and environmental concerns, single-atom catalysts (SACs) have attracted attention for oxygen reduction reactions (ORR) in fuel cells and Zn-air batteries. The research focuses on transition-metal-based electrocatalysts and explores synthesis, characterization, ORR mechanisms, and performance evaluations in different types of electrochemical devices. Challenges and future directions for SACs in fuel cells and Zn-air batteries are also discussed.

ENERGY & ENVIRONMENTAL MATERIALS (2021)

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Article Chemistry, Physical

Bifunctional electrocatalysts for oxygen reduction and oxygen evolution: a theoretical study on 2D metallic WO2-supported single atom (Fe, Co, or Ni) catalysts

Yuli Ma et al.

Summary: Theoretical calculations show that single-metal-atom doped 2D WO2 can serve as an excellent catalytic material for OER/ORR, with small overpotentials comparable to IrO2 or Pt-based catalysts.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2021)

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Article Engineering, Environmental

Green and facile synthesis of iron oxide nanoparticle-embedded N-doped biocarbon as an efficient oxygen reduction electrocatalyst for microbial fuel cells

Zeyu Fan et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Materials Science, Multidisciplinary

Characterization and evaluation of Fe-N-C electrocatalysts for oxygen reduction directly synthesized by reactive spray deposition technology

Abhinav Poozhikunnath et al.

JOURNAL OF MATERIALS SCIENCE (2020)

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Review Energy & Fuels

Recent progress of carbon dots and carbon nanotubes applied in oxygen reduction reaction of fuel cell for transportation

Mohamedazeem M. Mohideen et al.

APPLIED ENERGY (2020)

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Article Chemistry, Physical

A DFT study of the ORR on M-N3 (M = Mn, Fe, Co, Ni, or Cu) co-doped graphene with moiety-patched defects

Qiangqiang Gao

IONICS (2020)

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Article Chemistry, Physical

Effect of various Fe/Co ratios and annealing temperatures on a Fe/Co catalyst supported with nitrogen-doped reduced graphene oxide towards the oxygen reduction reaction

Shuaiba Samad et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

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Article Chemistry, Physical

Revealing of Active Sites and Catalytic Mechanism in N-Coordinated Fe, Ni Dual-Doped Carbon with Superior Acidic Oxygen Reduction than Single-Atom Catalyst

Yaodan Zhou et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Chemistry, Multidisciplinary

Evolution Pathway from Iron Compounds to Fe1(II)-N4 Sites through Gas-Phase Iron during Pyrolysis

Jingkun Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Review Chemistry, Physical

Carbon-Based Single-Atom Catalysts for Advanced Applications

Manoj B. Gawande et al.

ACS CATALYSIS (2020)

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Review Chemistry, Multidisciplinary

Recent Advances in Non-Noble Bifunctional Oxygen Electrocatalysts toward Large-Scale Production

Kai Zeng et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Review Chemistry, Multidisciplinary

Chemical Synthesis of Single Atomic Site Catalysts

Shufang Ji et al.

CHEMICAL REVIEWS (2020)

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Article Chemistry, Physical

Design of a Graphene Nitrene Two-Dimensional Catalyst Heterostructure Providing a Well-Defined Site Accommodating One to Three Metals, with Application to CO2 Reduction Electrocatalysis for the Two-Metal Case

Shiqian Chen et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Nanoscience & Nanotechnology

Performance improvement of N-doped carbon ORR catalyst via large through-hole structure

Min Zhu et al.

NANOTECHNOLOGY (2020)

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Article Energy & Fuels

Platinum nanoparticles decorated carbon nanofiber hybrids as highly active electrocatalysts for polymer electrolyte membrane fuel cells

B. Yarar Kaplan et al.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2020)

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Review Chemistry, Multidisciplinary

Metal-Nitrogen-Doped Carbon Materials as Highly Efficient Catalysts: Progress and Rational Design

Zhangsheng Shi et al.

ADVANCED SCIENCE (2020)

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Article Chemistry, Multidisciplinary

Synergistic Catalytic Effect of Hollow Carbon Nanosphere and Silver Nanoparticles for Oxygen Reduction Reaction

Zhongqin Guo et al.

CHEMISTRYSELECT (2020)

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Article Chemistry, Multidisciplinary

Coexisting Single-Atomic Fe and Ni Sites on Hierarchically Ordered Porous Carbon as a Highly Efficient ORR Electrocatalyst

Zhengju Zhu et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Physical

Boosting the bifunctional oxygen electrocatalytic performance of atomically dispersed Fe site via atomic Ni neighboring

Mang Ma et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Multidisciplinary Sciences

Nanocasting SiO2 into metal-organic frameworks imparts dual protection to high-loading Fe single-atom electrocatalysts

Long Jiao et al.

NATURE COMMUNICATIONS (2020)

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Article Nanoscience & Nanotechnology

Secondary-Atom-Doping Enables Robust Fe-N-C Single-Atom Catalysts with Enhanced Oxygen Reduction Reaction

Xin Luo et al.

NANO-MICRO LETTERS (2020)

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Article Materials Science, Multidisciplinary

ZIF-derived Co-N-C ORR catalyst with high performance in proton exchange membrane fuel cells

Ruixiang Wang et al.

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL (2020)

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Review Chemistry, Multidisciplinary

Advanced transition metal/nitrogen/carbon-based electrocatalysts for fuel cell applications

Tang Tang et al.

SCIENCE CHINA-CHEMISTRY (2020)

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Article Chemistry, Physical

Atomically Dispersed MnN4 Catalysts via Environmentally Benign Aqueous Synthesis for Oxygen Reduction: Mechanistic Understanding of Activity and Stability Improvements

Mengjie Chen et al.

ACS CATALYSIS (2020)

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Review Materials Science, Multidisciplinary

Applications of M/N/C analogue catalysts in PEM fuel cells and metal-air/oxygen batteries: Status quo, challenges and perspectives

Bin Chi et al.

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL (2020)

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Article Chemistry, Inorganic & Nuclear

Separation of Metal-N4 Units in Metal-Organic Framework for Preparation of M-Nx/C Catalyst with Dense Metal Sites

Bing Hu et al.

INORGANIC CHEMISTRY (2020)

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Article Chemistry, Physical

Nanoporous bimetallic Zn/Fe-N-C for efficient oxygen reduction in acidic and alkaline media

Jinling Xue et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

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Review Chemistry, Multidisciplinary

Atomic site electrocatalysts for water splitting, oxygen reduction and selective oxidation

Di Zhao et al.

CHEMICAL SOCIETY REVIEWS (2020)

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Article Chemistry, Physical

The effect of coordination environment on the kinetic and thermodynamic stability of single-atom iron catalysts

Weijie Yang et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2020)

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Article Electrochemistry

Exploring Different Synthesis Parameters for the Preparation of Metal-Nitrogen-Carbon Type Oxygen Reduction Catalysts

Patrick Teppor et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2020)

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Review Chemistry, Multidisciplinary

Atomically dispersed metal-nitrogen-carbon catalysts for fuel cells: advances in catalyst design, electrode performance, and durability improvement

Yanghua He et al.

CHEMICAL SOCIETY REVIEWS (2020)

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Article Chemistry, Multidisciplinary

Ultrahigh-Loading Zinc Single-Atom Catalyst for Highly Efficient Oxygen Reduction in Both Acidic and Alkaline Media

Jia Li et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

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Article Chemistry, Physical

Bimetallic Mn and Co encased within bamboo-like N-doped carbon nanotubes as efficient oxygen reduction reaction electrocatalysts

Man Zhang et al.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2019)

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Article Chemistry, Multidisciplinary

Highly Active and Stable Single-Atom Cu Catalysts Supported by a Metal-Organic Framework

Ali M. Abdel-Mageed et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Chemistry, Physical

Tailoring FeN4 Sites with Edge Enrichment for Boosted Oxygen Reduction Performance in Proton Exchange Membrane Fuel Cell

Xiaogang Fu et al.

ADVANCED ENERGY MATERIALS (2019)

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Article Chemistry, Physical

Mn- and N- doped carbon as promising catalysts for oxygen reduction reaction: Theoretical prediction and experimental validation

Kexi Liu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Chemistry, Physical

High-performance single atom bifunctional oxygen catalysts derived from ZIF-67 superstructures

Xueping Sun et al.

NANO ENERGY (2019)

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Article Chemistry, Multidisciplinary

Tunable Synthesis of Hollow Metal-Nitrogen-Carbon Capsules for Efficient Oxygen Reduction Catalysis in Proton Exchange Membrane Fuel Cells

Hui Yang et al.

ACS NANO (2019)

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Article Chemistry, Physical

Computational Evaluation of Electrocatalytic Nitrogen Reduction on TM Single-, Double-, and Triple-Atom Catalysts (TM = Mn, Fe, Co, Ni) Based on Graphdiyne Monolayers

Dongwei Ma et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2019)

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Article Chemistry, Multidisciplinary

A Cobalt-Iron Double-Atom Catalyst for the Oxygen Evolution Reaction

Lichen Bai et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Nanoscience & Nanotechnology

Engineering of Nitrogen Coordinated Single Cobalt Atom Moieties for Oxygen Electroreduction

Wei Sun et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Article Chemistry, Multidisciplinary

Thermally Driven Structure and Performance Evolution of Atomically Dispersed FeN4 Sites for Oxygen Reduction

Jiazhan Li et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

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Article Chemistry, Physical

Insights into the role of active site density in the fuel cell performance of Co-N-C catalysts

Linyun Chen et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Chemistry, Multidisciplinary

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

Meiling Liu et al.

ADVANCED MATERIALS (2019)

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Article Chemistry, Multidisciplinary

Effects of Intrinsic Pentagon Defects on Electrochemical Reactivity of Carbon Nanomaterials

Jiawei Zhu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

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Article Chemistry, Physical

Atomic Co/Ni dual sites and Co/Ni alloy nanoparticles in N-doped porous Janus-like carbon frameworks for bifunctional oxygen electrocatalysis

Zehui Li et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Chemistry, Multidisciplinary

In Situ X-ray Absorption Spectroscopy of a Synergistic Co-Mn Oxide Catalyst for the Oxygen Reduction Reaction

Yao Yang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Chemistry, Physical

Fe-N-C electrocatalyst with dense active sites and efficient mass transport for high-performance proton exchange membrane fuel cells

Xin Wan et al.

NATURE CATALYSIS (2019)

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Article Chemistry, Physical

Ni/NiM2O4 (M = Mn or Fe) supported on N-doped carbon nanotubes as trifunctional electrocatalysts for ORR, OER and HER

Qing Qin et al.

CATALYSIS SCIENCE & TECHNOLOGY (2019)

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Review Electrochemistry

Single-Atom Catalysts: From Design to Application

Niancai Cheng et al.

ELECTROCHEMICAL ENERGY REVIEWS (2019)

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Article Nanoscience & Nanotechnology

Bimetal Zeolitic Imidazolite Framework-Derived Iron-, Cobalt- and Nitrogen-Codoped Carbon Nanopolyhedra Electrocatalyst for Efficient Oxygen Reduction

Zhaowen Hu et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

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Article Chemistry, Multidisciplinary

Ultrafine Co Nanoparticles Encapsulated in Carbon-Nanotubes-Grafted Graphene Sheets as Advanced Electrocatalysts for the Hydrogen Evolution Reaction

Ziliang Chen et al.

ADVANCED MATERIALS (2018)

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Article Chemistry, Multidisciplinary

Nitrogen-Coordinated Single Cobalt Atom Catalysts for Oxygen Reduction in Proton Exchange Membrane Fuel Cells

Xiao Xia Wang et al.

ADVANCED MATERIALS (2018)

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Article Chemistry, Multidisciplinary

The Solid-Phase Synthesis of an Fe-N-C Electrocatalyst for High-Power Proton-Exchange Membrane Fuel Cells

Qingtao Liu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)

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Article Chemistry, Physical

In-situ synthesized TiC@CNT as high-performance catalysts for oxygen reduction reaction

Taizhong Huang et al.

CARBON (2018)

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Review Chemistry, Multidisciplinary

Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles

Lichen Liu et al.

CHEMICAL REVIEWS (2018)

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Review Chemistry, Multidisciplinary

Stable and Efficient Nitrogen-Containing Carbon-Based Electrocatalysts for Reactions in Energy-Conversion Systems

Sicong Wang et al.

CHEMSUSCHEM (2018)

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Review Chemistry, Analytical

Recent Advancements in Transition Metal-Nitrogen-Carbon Catalysts for Oxygen Reduction Reaction

Wenling Gu et al.

ELECTROANALYSIS (2018)

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Review Electrochemistry

Progress in nanostructured (Fe or Co)/N/C non-noble metal electrocatalysts for fuel cell oxygen reduction reaction

Lei Zhang et al.

ELECTROCHIMICA ACTA (2018)

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Article Chemistry, Physical

Encapsulation of metal precursor within ZIFs for bimetallic N-doped carbon electrocatalyst with enhanced oxygen reduction

Mengchen Wu et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2018)

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Article Electrochemistry

Co-Mn Hybrid Oxides Supported on N-Doped Graphene as Efficient Electrocatalysts for Reversible Oxygen Electrodes

Zhenjie Lu et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2018)

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Review Chemistry, Physical

Recent Development of Zeolitic Imidazolate Frameworks (ZIFs) Derived Porous Carbon Based Materials as Electrocatalysts

Ningyan Cheng et al.

ADVANCED ENERGY MATERIALS (2018)

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Review Chemistry, Applied

Recent developments in electrocatalysts and future prospects for oxygen reduction reaction in polymer electrolyte membrane fuel cells

Maryam Kiani et al.

JOURNAL OF ENERGY CHEMISTRY (2018)

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Article Chemistry, Physical

Lonely Atoms with Special Gifts: Breaking Linear Scaling Relationships in Heterogeneous Catalysis with Single-Atom Alloys

Matthew T. Darby et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2018)

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Article Chemistry, Multidisciplinary

A rationally designed Fe-tetrapyridophenazine complex: a promising precursor to a single-atom Fe catalyst for an efficient oxygen reduction reaction in high-power Zn-air cells

Zheng Kun Yang et al.

NANOSCALE (2018)

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Article Chemistry, Physical

Co nanoparticle embedded in atomically-dispersed Co-N-C nanofibers for oxygen reduction with high activity and remarkable durability

Qingqing Cheng et al.

NANO ENERGY (2018)

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Article Chemistry, Physical

Restructured Fe-Mn Alloys Encapsulated by N-doped Carbon Nanotube Catalysts Derived from Bimetallic MOF for Enhanced Oxygen Reduction Reaction

Zhun Dong et al.

CHEMCATCHEM (2018)

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Article Chemistry, Physical

Atomically dispersed manganese catalysts for oxygen reduction in proton-exchange membrane fuel cells

Jiazhan Li et al.

NATURE CATALYSIS (2018)

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Article Chemistry, Multidisciplinary

The Achilles' heel of iron-based catalysts during oxygen reduction in an acidic medium

Chang Hyuck Choi et al.

ENERGY & ENVIRONMENTAL SCIENCE (2018)

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Review Chemistry, Physical

Single-Atom Catalysts: Synthetic Strategies and Electrochemical Applications

Yuanjun Chen et al.

JOULE (2018)

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Article Chemistry, Multidisciplinary

Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

Jing Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

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Review Chemistry, Physical

Transition metal-nitrogen-carbon nanostructured catalysts for the oxygen reduction reaction: From mechanistic insights to structural optimization

Mengxia Shen et al.

NANO RESEARCH (2017)

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Article Chemistry, Physical

Single Cobalt Atom and N Codoped Carbon Nanofibers as Highly Durable Electrocatalyst for Oxygen Reduction Reaction

Qingqing Cheng et al.

ACS CATALYSIS (2017)

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Review Chemistry, Physical

Engineering nanostructures of PGM-free oxygen-reduction catalysts using metal-organic frameworks

Hanguang Zhang et al.

NANO ENERGY (2017)

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Article Chemistry, Physical

Current Status and Future Development of Catalyst Materials and Catalyst Layers for Proton Exchange Membrane Fuel Cells: An Industrial Perspective

Dustin Banham et al.

ACS ENERGY LETTERS (2017)

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Review Energy & Fuels

Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang Wu

FRONTIERS IN ENERGY (2017)

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Review Energy & Fuels

A review of Pt-based electrocatalysts for oxygen reduction reaction

Changlin Zhang et al.

FRONTIERS IN ENERGY (2017)

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Article Nanoscience & Nanotechnology

Co Nanoparticles Encapsulated in N-Doped Carbon Nanosheets: Enhancing Oxygen Reduction Catalysis without Metal-Nitrogen Bonding

Xinlei Zhang et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Article Chemistry, Multidisciplinary

Wiring Fe-Nx-Embedded Porous Carbon Framework onto 1D Nanotubes for Efficient Oxygen Reduction Reaction in Alkaline and Acidic Media

Sung Hoon Ahn et al.

ADVANCED MATERIALS (2017)

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Article Chemistry, Multidisciplinary

Single Cobalt Atoms with Precise N-Coordination as Superior Oxygen Reduction Reaction Catalysts

Peiqun Yin et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2016)

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Article Chemistry, Physical

Nitrogen-doped graphene/CoNi alloy encased within bamboo-like carbon nanotube hybrids as cathode catalysts in microbial fuel cells

Yang Hou et al.

JOURNAL OF POWER SOURCES (2016)

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Article Chemistry, Multidisciplinary

On an Easy Way To Prepare Metal Nitrogen Doped Carbon with Exclusive Presence of MeN4-type Sites Active for the ORR

Ulrike I. Kramm et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016)

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Article Chemistry, Physical

Rational design of common transition metal-nitrogen-carbon catalysts for oxygen reduction reaction in fuel cells

Yongping Zheng et al.

NANO ENERGY (2016)

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Article Chemistry, Multidisciplinary

Nitrogen-Doped Nanoporous Carbon/Graphene Nano-Sandwiches: Synthesis and Application for Efficient Oxygen Reduction

Jing Wei et al.

ADVANCED FUNCTIONAL MATERIALS (2015)

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Article Chemistry, Multidisciplinary

A metal-organic framework route to in situ encapsulation of Co@Co3O4@C core@bishell nanoparticles into a highly ordered porous carbon matrix for oxygen reduction

Wei Xia et al.

ENERGY & ENVIRONMENTAL SCIENCE (2015)

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Article Chemistry, Physical

From the Sabatier principle to a predictive theory of transition-metal heterogeneous catalysis

Andrew J. Medford et al.

JOURNAL OF CATALYSIS (2015)

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Review Chemistry, Multidisciplinary

Single-Atom Catalysts: A New Frontier in Heterogeneous Catalysis

Xiao-Feng Yang et al.

ACCOUNTS OF CHEMICAL RESEARCH (2013)

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Article Chemistry, Multidisciplinary

Exceptional oxidation activity with size-controlled supported gold clusters of low atomicity

Avelino Corma et al.

NATURE CHEMISTRY (2013)

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Article Chemistry, Physical

Compositional segregation in shaped Pt alloy nanoparticles and their structural behaviour during electrocatalysis

Chunhua Cui et al.

NATURE MATERIALS (2013)

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Article Chemistry, Multidisciplinary

Design of a Highly Active Ir/Fe(OH)x Catalyst: Versatile Application of Pt-Group Metals for the Preferential Oxidation of Carbon Monoxide

Jian Lin et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2012)

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Article Chemistry, Physical

Oxygen reduction on non-noble metal electrocatalysts supported on N-doped carbon aerogel composites

Yang Wei et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2012)

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Article Chemistry, Multidisciplinary

Covalent Hybrid of Spinel Manganese-Cobalt Oxide and Graphene as Advanced Oxygen Reduction Electrocatalysts

Yongye Liang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Article Electrochemistry

Niobium-based catalysts prepared by reactive radio-frequency magnetron sputtering and arc plasma methods as non-noble metal cathode catalysts for polymer electrolyte fuel cells

Ryohji Ohnishi et al.

ELECTROCHIMICA ACTA (2010)

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Article Chemistry, Analytical

Degradation study of Pt-based alloy catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells

Adriano C. Fernandes et al.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2010)

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Article Chemistry, Physical

Development of high performance carbon composite catalyst for oxygen reduction reaction in PEM Proton Exchange Membrane fuel cells

Vijayadurga Nallathambi et al.

JOURNAL OF POWER SOURCES (2008)

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Article Electrochemistry

Influence of structural properties of pristine carbon blacks on activity of Fe/N/C cathode catalysts for PEFCs

Stephane Ruggeri et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2007)

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Article Multidisciplinary Sciences

A class of non-precious metal composite catalysts for fuel cells

Rajesh Bashyam et al.

NATURE (2006)

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