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

Article Chemistry, Multidisciplinary

Scalable Molten Salt Synthesis of Platinum Alloys Planted in Metal-Nitrogen-Graphene for Efficient Oxygen Reduction

Shahid Zaman et al.

Summary: The study of a low-platinum nanoalloy-implanted graphene catalyst for fuel cells shows high efficiency and durability, providing important insights for the future development of fuel cell technology.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

N-Doped Carbon Electrocatalyst: Marked ORR Activity in Acidic Media without the Contribution from Metal Sites?

Fantao Kong et al.

Summary: N-doped carbon materials with trace amounts of iron show excellent ORR activity and durability without significant contribution by the metal sites. The materials have a unique hollow and hierarchically porous architecture, as well as a noncovalently bonded N-deficient/N-rich heterostructure.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Review Chemistry, Multidisciplinary

Recent Advances in ZIF-Derived Atomic Metal-N-C Electrocatalysts for Oxygen Reduction Reaction: Synthetic Strategies, Active Centers, and Stabilities

Chen Gao et al.

Summary: This review highlights the significance of exploring highly active and stable electrocatalysts with earth-abundant metal centers for the oxygen reduction reaction (ORR). The focus is on the synthetic strategies and design principles of metal-N-C (M-N-C) electrocatalysts derived from zeolite imidazolate framework (ZIF) for efficient ORR catalysis. The review discusses methods to improve intrinsic ORR activity, such as coordination structures, doping metal-free heteroatoms, and edge-hosted structures, as well as strategies to increase active site density, including formation of M-N complexes and porous structure design.

SMALL (2022)

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Article Multidisciplinary Sciences

Manipulating the oxygen reduction reaction pathway on Pt-coordinated motifs

Jiajun Zhao et al.

Summary: Controlling the coordination environment of Pt can manipulate the 2e(-) or 4e(-) reduction pathways, leading to controlled product selectivity and H2O2 generation rate during oxygen reduction.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Understanding the Crucial Significance of the Temperature and Potential Window on the Stability of Carbon Supported Pt-Alloy Nanoparticles as Oxygen Reduction Reaction Electrocatalysts

Tina Dukic et al.

Summary: This research provides a study on the stability of carbon-supported intermetallic Pt-alloy electrocatalysts and determines the effects of temperature and potential window on metal dissolution. The findings contradict the commonly accepted hypothesis that Pt dissolution is not significantly affected by temperature, and highlight the critical role of temperature in governing Pt stability and metal retention in Pt-alloy electrocatalysts. Additionally, the study shows that the rate of Pt redeposition increases with temperature, providing insight into the temperature-dependent kinetics of Pt stability.

ACS CATALYSIS (2022)

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Review Chemistry, Physical

Metal-Support Interactions in Metal/Oxide Catalysts and Oxide-Metal Interactions in Oxide/Metal Inverse Catalysts

Yangyang Li et al.

Summary: This article comprehensively reviews the progress on metal-support interactions (MSI) in metal/oxide catalysts and oxide-metal interactions (OMI) in oxide/metal inverse catalysts. It emphasizes the structure sensitivity of MSI and OMI, and introduces the concepts of electronic oxide-metal interactions (EOMI) and electronic oxide-metal strong interactions (EOMSI) in oxide/metal inverse catalysts. The article provides an overview of the background and nature of interfacial interactions between metals and oxides, reviews the MSI in metal/oxide catalysts with a focus on size and facet effects, and discusses the OMI in oxide/metal inverse catalysts with an emphasis on EOMI and EOMSI.

ACS CATALYSIS (2022)

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Review Chemistry, Multidisciplinary

Recent Advances in Boron- and Nitrogen-Doped Carbon-Based Materials and Their Various Applications

Anukul K. Thakur et al.

Summary: This review summarizes the synthesis strategies, charge conduction mechanism, and applications of B, N co-doped carbon in electrocatalysis, energy storage, and sensors. It also discusses the challenges and future directions in this field.

ADVANCED MATERIALS INTERFACES (2022)

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Article Chemistry, Multidisciplinary

Density Functional Theory Study of the Oxygen Reduction Reaction Mechanism on Graphene Doped with Nitrogen and a Transition Metal

Kirill Yurievich Vinogradov et al.

Summary: Quantum-chemical methods were used to simulate the active centers of nonplatinum catalysts doped with different metal elements and investigate their impact on the oxygen reduction reaction. It was found that graphene doped with cobalt and iron exhibited the best performance, and a more detailed reaction mechanism was proposed.

ACS OMEGA (2022)

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Article Nanoscience & Nanotechnology

Pt3Fe Nanoparticles on B,N-Codoped Carbon as Oxygen Reduction and pH-Universal Hydrogen Evolution Electrocatalysts

Yueyang Qiao et al.

Summary: In this study, a Pt3Fe/BNC catalyst was successfully prepared, showing significant hydrogen evolution reaction (HER) activity in electrolytes at different pH ranges and oxygen reduction reaction (ORR) activity in acidic media. The formation of metal-B bonds and immobilized Pt3Fe alloys on the carbon layer contribute to the enhanced activity of Pt3Fe/BNC.

ACS APPLIED NANO MATERIALS (2022)

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Article Chemistry, Physical

Mesoporous carbon promoting the efficiency and stability of single atomic electrocatalysts for oxygen reduction reaction

Xilong Wang et al.

Summary: This study develops a facile benzoate-assisted self-template strategy to enhance oxygen reduction reaction catalytic performance and stability of atomically dispersed Fe-N-C catalysts. The strategy promotes the formation of catalysts with denser accessible active sites and mesopores, leading to excellent electrocatalytic performance and long-term stability. The catalyst also exhibits superior tolerance to methanol crossover and shows potential application in zinc-air batteries.

CARBON (2022)

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Article Engineering, Environmental

Honeycomb-like phosphorus doped nickel/carbon: A highly efficient electrocatalyst for oxygen reduction to H2O2

Chenglu Yan et al.

Summary: This study designs and fabricates a 3D interconnected P-doped nickel/porous carbon material with high electrocatalytic performance for 2e(-) ORR by modulating its crystallinity through phosphating. The catalyst exhibits a considerable H2O2 yield and selectivity, showing great potential for H2O2 production.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Multidisciplinary Sciences

Iron atom-cluster interactions increase activity and improve durability in Fe-N-C fuel cells

Xin Wan et al.

Summary: This study demonstrates the high activity and stability of an Fe-N-C catalyst for oxygen reduction reaction in acidic fuel cells by introducing nitrogen-coordinated iron clusters and closely surrounding Fe-N-4 active sites. The strong electronic interaction between the iron clusters and the Fe-N-4 sites optimizes the adsorption strength of reaction intermediates and enhances the catalyst's turnover frequency and demetalation resistance.

NATURE COMMUNICATIONS (2022)

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Review Chemistry, Physical

Metal-Support Interactions in Metal/Oxide Catalysts and Oxide-Metal Interactions in Oxide/Metal Inverse Catalysts

Yangyang Li et al.

Summary: In this review, the metal-support interactions (MSI) in metal/oxide catalysts and the oxide-metal interactions (OMI) in oxide/metal inverse catalysts are comprehensively discussed. Electronic oxide-metal interactions (EOMI) and electronic oxide-metal strong interactions (EOMSI) in oxide/metal inverse catalysts are introduced as analogies to the concept of EMSI and SMSI in metal/oxide catalysts, emphasizing the structure sensitivity of MSI and OMI. Additionally, the effects of size and facet on the structure and electronic properties of metal/oxide catalysts are highlighted alongside a summary and outlook on the local nature and structure sensitivity of MSI and OMI.

ACS CATALYSIS (2022)

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Article Chemistry, Multidisciplinary

Boosting Oxygen Reduction via Integrated Construction and Synergistic Catalysis of Porous Platinum Alloy and Defective Graphitic Carbon

Lei Huang et al.

Summary: Integrated fabrication of porous Pt-rich alloy encapsulated by graphitic carbon via integration engineering exhibits optimized reaction pathway and improved oxygen reduction reaction performance. The hybrid catalyst outperforms commercial Pt/C catalyst in full-cell assessment, attributed to the mutual assistance between porous Pt alloy and Co-N-C.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Platinum Dissolution in Realistic Fuel Cell Catalyst Layers

Konrad Ehelebe et al.

Summary: Research has shown that specific Pt dissolution increases significantly with decreasing Pt loading; compared to experiments in aqueous model systems with flow cells, the measured dissolution in GDE experiments is considerably lower; further reduction in Pt dissolution is observed by adding a membrane onto the catalyst layer.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (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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Article Chemistry, Physical

Structurally Disordered Phosphorus-Doped Pt as a Highly Active Electrocatalyst for an Oxygen Reduction Reaction

Bang-An Lu et al.

Summary: The study introduces a phosphorus-doping strategy to significantly enhance the ORR performance of Pt catalysts, while also improving their durability. By introducing phosphorus into the near-surface of commercial Pt/C catalysts using a surfactant-free method, the ORR mass activity was enhanced by 7 times and showed only 14% loss after 10,000 potential cycles, indicating a promising approach for proton-exchange membrane fuel cell applications.

ACS CATALYSIS (2021)

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Review Chemistry, Multidisciplinary

Oxygen Reduction Electrocatalysts toward Practical Fuel Cells: Progress and Perspectives

Shahid Zaman et al.

Summary: Fuel cells show great potential as a renewable energy technology, but face challenges due to high cost and poor reliability of cathodic electrocatalysts for the oxygen reduction reaction (ORR). This review emphasizes recent progress of ORR electrocatalysts in fuel cells and highlights issues with activity translation from laboratory testing to practical applications. Future efforts should focus on large-scale preparation, unified assessment criteria, advanced interpretation techniques, advanced simulation and artificial intelligence to advance efficient ORR electrocatalysts in fuel cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Multidisciplinary Sciences

Sabatier principle of metal-support interaction for design of ultrastable metal nanocatalysts

Sulei Hu et al.

Summary: The study introduces a principle of metal-support interaction for stabilizing nanocatalysts against sintering, revealing that both too strong and too weak interactions can lead to particle coalescence issues. Through high-throughput screening of supports, it is possible to design ultrastable nanocatalysts with excellent sintering resistance.

SCIENCE (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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Review Multidisciplinary Sciences

Advancements in cathode catalyst and cathode layer design for proton exchange membrane fuel cells

Yanyan Sun et al.

Summary: The high platinum loadings at the cathodes of proton exchange membrane fuel cells significantly increase the cost of these clean energy conversion devices. Recent developments focus on low- and non-platinum-based cathode catalysts and catalyst layers to address this issue. Advances in nanotechnologies and material sciences have led to the discovery of promising materials, including platinum-based alloys and platinum-group-metal-free catalysts, for more cost-effective solutions in the future.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Ultra-Low Pt Loaded Porous Carbon Microparticles with Controlled Channel Structure for High-Performance Fuel Cell Catalysts

Young Jun Lee et al.

Summary: The study demonstrates the development of a high-performance PEMFC catalyst using ultra-low Pt loaded porous carbon with controlled channel diameters. The catalyst exhibits outstanding initial maximum power density and durability in H-2/O-2 flow conditions, surpassing commercial Pt/C catalysts with significantly less platinum usage.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Biomass-derived Graphene-like Catalyst Material for Oxygen Reduction Reaction

Katlin Kaare et al.

Summary: A novel and sustainable method was developed to prepare nitrogen-doped graphene-like material from a renewable secondary raw material for potential application in oxygen reduction reaction catalysis. The N-doped wood char-based graphene-like material showed superior ORR activity in alkaline media compared to commercial nitrogen-doped graphene, indicating its potential as an alternative material in areas such as fuel cells and batteries.

CHEMNANOMAT (2021)

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Review Chemistry, Multidisciplinary

Stabilizing Pt-Based Electrocatalysts for Oxygen Reduction Reaction: Fundamental Understanding and Design Strategies

Jiawei Zhang et al.

Summary: Proton exchange membrane fuel cells (PEMFCs) have high efficiency and nonpollution characteristics, but the stability issue of Pt-based catalysts is a major constraint to their widespread deployment. This review discusses how to improve the stability of Pt-based catalysts for the oxygen reduction reaction (ORR), covering the physical chemistry behind catalyst degradation and design strategies for enhancing stability.

ADVANCED MATERIALS (2021)

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Article Chemistry, Physical

The fluorine-doped and defects engineered carbon nanosheets as advanced electrocatalysts for oxygen electroreduction

Ying Chang et al.

Summary: The study demonstrates the scalable salt-templated synthesis of two-dimensional porous fluorine-doped carbon nanosheets, with fluoride doping and defects providing a richer density of active sites. Both F doping and defects play important roles in efficient ORR electrocatalysis, with FC structures beneficial to ORR activity.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Applied

Degradation: A critical challenge for M-N-C electrocatalysts

Yongchao Yang et al.

Summary: Atomically dispersed transition metal and nitrogen co-doped carbon electrocatalysts show great potential in electrochemical conversion and energy storage, but their commercialization is hindered by rapid degradation. Current understanding of their active sites and degradation mechanisms is still limited.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Design of Co Nanoparticles-Encapsulated by Boron and Nitrogen Co-Doped Carbon Nanosheets as Highly Efficient Electrocatalyst for Oxygen Reduction Reaction

Wen-Jun Niu et al.

Summary: This study presents a rationally designed strategy for the synthesis of efficient oxygen reduction reaction electrocatalyst B, N-Co/CNs, demonstrating excellent activity and performance.

ADVANCED MATERIALS INTERFACES (2021)

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Article Chemistry, Multidisciplinary

3D-Zipped Interface: In Situ Covalent-Locking for High Performance of Anion Exchange Membrane Fuel Cells

Xian Liang et al.

Summary: By introducing a 3D-interfacial zipping concept, the challenges of mass transport resistances in polymer electrolyte membrane fuel cells are addressed, leading to enhanced power densities and long-term stabilities. The use of a bi-cationic quaternary-ammonium-based polyelectrolyte creates a covalently locked interface that prevents delamination without sacrificing fuel cell performance, as demonstrated in ex situ and in situ tests. A high power density of 1.5 W cm(-2) was achieved in a H-2/O-2 AEMFC test, with performance retention for at least 120 hours at a high current density of 0.6 A cm(-2).

ADVANCED SCIENCE (2021)

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Article Multidisciplinary Sciences

Direct integration of ultralow-platinum alloy into nanocarbon architectures for efficient oxygen reduction in fuel cells

Shahid Zaman et al.

Summary: Efficient platinum-based electrocatalysts are crucial for fuel cells, and an integrated electrocatalyst of ultralow-Pt alloy encapsulated into nitrogen-doped nanocarbon architecture has been developed for efficient oxygen reduction reaction. The hybrid Pt-based catalyst shows excellent mass activity and stability, with potential practical applications in the future.

SCIENCE BULLETIN (2021)

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Article Chemistry, Physical

Functionalization of carbons for Pt electrocatalyst in PEMFC

J. A. Prithi et al.

Summary: This study investigated the stability of three different carbon blacks and their functionalized forms as supports for Pt electrocatalysts, with acetylene black and its functionalized form showing good electrochemical activity and excellent corrosion resistance, making it a promising durable electrocatalyst for PEMFC with improved activity and durability.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Electrochemistry

N, S-codoped porous carbon as metal-free electrocatalyst for oxygen reduction reaction

Qin Gao et al.

Summary: By proposing a facile and low-cost two-step carbonization method, N, S-codoped ORR electrocatalysts with high specific surface area and porous structure were prepared from biomass waste like pomelo peel. These electrocatalysts exhibited excellent catalytic activity, dependent on their large specific surface area, porous structure, high degree of defects, and synergistic effect of nitrogen and sulfur atoms.

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2021)

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Article Energy & Fuels

Boron-doped nitrogen-deficient carbon nitride-based Z-scheme heterostructures for photocatalytic overall water splitting

Daming Zhao et al.

Summary: Researchers have successfully used doped carbon nitride-based Z-scheme heterostructures to split water and produce hydrogen, but coupling suitable H-2 and O-2 evolution components remains challenging.

NATURE ENERGY (2021)

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Article Chemistry, Multidisciplinary

A Zeolitic-Imidazole Framework-Derived Trifunctional Electrocatalyst for Hydrazine Fuel Cells

Ya Yan et al.

Summary: This study introduces an efficient trifunctional electrocatalyst based on zeolitic-imidazole frameworks for hydrazine oxidation, oxygen, and hydrogen peroxide reduction. The electrocatalyst exhibits outstanding performance and presents a novel diffusion philosophy for liquid electrochemical cells.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

Improving the Stability of Non-Noble-Metal M-N-C Catalysts for Proton-Exchange-Membrane Fuel Cells through M-N Bond Length and Coordination Regulation

Zhengpei Miao et al.

Summary: An effective strategy is developed to enhance the stability of non-noble-metal catalysts in fuel cells by improving the bonding strength between metal ions and chelating polymers. The optimized catalyst exhibits outstanding activity and stability in both half-cell and fuel cell cathodes, with near 100% retention of current density for an extended period. The study suggests that the Fe-N-4/C site can strongly stabilize Fe centers against demetalation, providing insights for further catalyst design.

ADVANCED MATERIALS (2021)

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Article Multidisciplinary Sciences

Designing the next generation of proton-exchange membrane fuel cells

Kui Jiao et al.

Summary: The rapid growth of proton-exchange membrane fuel cell technology is driving the demand for clean and sustainable global energy applications. Increasing PEMFC power density is critical for commercialization, with ambitious goals set globally. Future high-power-density PEMFCs will focus on improving membrane electrode assembly components, water and thermal management, and materials.

NATURE (2021)

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Review Green & Sustainable Science & Technology

Heteroatom-doped graphene-based materials for sustainable energy applications: A review

Seung Jun Lee et al.

Summary: Graphene is an excellent energy material with unique properties, but its application is limited due to zero band gap. Doping with heteroatoms can enhance the physicochemical properties of graphene, making it an ideal material for various fields. These improved materials have made significant progress in energy conversion and storage technologies.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Advanced Nanocarbons for Enhanced Performance and Durability of Platinum Catalysts in Proton Exchange Membrane Fuel Cells

Zhi Qiao et al.

Summary: The insufficient stability of current carbon supported Pt and Pt alloy catalysts poses a significant barrier for proton-exchange membrane fuel cells. Efforts have been made to develop durable carbon-based supports with innovative nanostructure design and synthesis in recent years. Strategies to tailor carbon structures and enhance metal-support interactions have been summarized to improve support stability and performance of Pt catalysts in fuel cells.

SMALL (2021)

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Article Chemistry, Multidisciplinary

Constructing Co-N-C Catalyst via a Double Crosslinking Hydrogel Strategy for Enhanced Oxygen Reduction Catalysis in Fuel Cells

Zhengpei Miao et al.

Summary: In this study, a high-performance Co-N-C catalyst was reported using a double crosslinking hydrogel strategy, showing enhanced ORR activity and stability. By optimizing the preparation conditions, the catalyst exhibited higher nitrogen doping content and specific surface area, leading to better performance compared to traditional hydrogel-derived catalysts.

SMALL (2021)

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Article Multidisciplinary Sciences

Sulfur stabilizing metal nanoclusters on carbon at high temperatures

Peng Yin et al.

Summary: Sulfur-doped carbon support can stabilize metal nanoclusters at high temperatures, enhancing adhesion strength and retarding metal atom diffusion and nanocluster migration. The sulfur-doped carbon supported Pt nanocluster catalyst exhibits higher selectivity and more stable durability in catalyzing propane dehydrogenation at 550 degrees C compared to sulfur-free carbon supported catalysts.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Highly active and selective oxygen reduction to H2O2 on boron-doped carbon for high production rates

Yang Xia et al.

Summary: Oxygen reduction reaction provides an environmentally-benign route for hydrogen peroxide production but lacks efficient catalysts to achieve high selectivity and activity simultaneously. Here, the authors report a boron-doped carbon catalyst which shows great promise with outstanding performance.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Applied

Pre-fixing defects in carbon framework for revealing the active sites of oxygen reduction reaction at nitrogen-doped carbon nanotubes

Bing Huang et al.

Summary: This study addresses the challenge of analyzing the ORR mechanism of nitrogen-doped carbon-based electrocatalysts by using nitrogen-doped carbon nanotubes framework catalysts. It demonstrates the importance of defects for ORR and reveals the correlation between nitrogen species and ORR pathways in nitrogen-doped carbon catalysts.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Article Materials Science, Multidisciplinary

Effect of surface functionalization on the surface and interfacial properties of thermoplastic-coated carbon fibers

Ya-nan Su et al.

Summary: The surface functionalization of carbon fibers significantly increased the content of polar functional groups and wettability, while improving the chemical reactions and interfacial adhesion with the sizing agent. The interfacial shear strengths of CF-OH-SPEEK and CF-NH2-SPEEK reinforced PEEK matrix composites were increased compared to composites with desized-SPEEK CFs. The surface functionalization plays a crucial role in improving the interfacial adhesion of thermoplastic-coated CF/PEEK composites.

NEW CARBON MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Recent advances in high-loading catalysts for low-temperature fuel cells: From nanoparticle to single atom

Lixiao Shen et al.

Summary: Low-temperature fuel cells (LTFCs) show great promise for sustainable and renewable energy conversion technologies. Increasing the loading of electrocatalysts can lead to thinner and more efficient membrane electrode assemblies, addressing mass transport impedance and improving reactant permeability and proton diffusion.

SUSMAT (2021)

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Review Chemistry, Multidisciplinary

Carbon-based metal-free electrocatalysts: from oxygen reduction to multifunctional electrocatalysis

Chuangang Hu et al.

Summary: Since the discovery of N-doped carbon nanotubes as the first carbon-based metal-free electrocatalyst for oxygen reduction reaction in 2009, C-MFECs have shown multifunctional electrocatalytic activities for various reactions. While some C-MFECs have demonstrated comparable or superior performance to those based on noble metals, further research and development are required for practical applications in energy conversion and storage. The structure-property relationship and mechanistic understanding of C-MFECs, along with current challenges and future perspectives, are key areas of focus for advancing this field.

CHEMICAL SOCIETY REVIEWS (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

Development of a highly stable Pt-based ORR catalyst over Mn-modified polyaniline-based carbon nanofibers

Jinghua Yu et al.

Summary: The carbon support significantly influences the activity and stability of Pt-based ORR catalysts in fuel cells. The Pt/CNF-1300-0.28Mn catalyst exhibited higher activity and stability than the commercial JM-Pt/C catalyst, showing excellent corrosion resistance and durability in cyclic voltammetry tests.

NEW JOURNAL OF CHEMISTRY (2021)

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Article Engineering, Electrical & Electronic

Modifying Carbon Supports of Catalyst for the Oxygen Reduction Reaction in Vehicle PEMFCs

Qiong Xue et al.

Summary: This study investigates the carbon corrosion of catalysts using the accelerated stress test method, finding that optimally graphitized carbon blacks demonstrate superior stability and antioxidation capacity. Pt catalyst supported on the selected graphitized carbon exhibits excellent performance in both RDE and MEA tests.

AUTOMOTIVE INNOVATION (2021)

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Article Chemistry, Multidisciplinary

Novel carbon structures as highly stable supports for electrocatalysts in acid media: regulating the oxygen functionalization behavior of carbon

Guokang Han et al.

Summary: The nature of carbon support greatly affects the catalytic properties of supported catalysts. Introducing Co during fabrication can regulate the oxygen functionalization behavior of carbon, leading to enhanced catalytic stability of Pt/NHC@Co in the oxygen reduction reaction (ORR).

NEW JOURNAL OF CHEMISTRY (2021)

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Review Chemistry, Multidisciplinary

Engineering local coordination environments and site densities for high-performance Fe-N-C oxygen reduction reaction electrocatalysis

Qing Wang et al.

Summary: This review summarizes recent advances in the design and synthesis of Fe-N-C catalysts rich in highly dispersed FeNx active sites and emphasizes strategies for tuning the electronic structure of Fe atoms to enhance the ORR activity. Despite progress made in the past 5 years, significant technical obstacles still hinder the large-scale application of Fe-N-C materials as cathode catalysts in real-world fuel cells.

SMARTMAT (2021)

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Review Chemistry, Applied

Recent developments of nanocarbon based supports for PEMFCs electrocatalysts

Junwei Chen et al.

Summary: This paper provides an overview of the nanoarchitectures and surface physicochemical properties of nanocarbons affecting electrocatalyst performance, with discussions on recent progress in nanocarbon supports and guidance for future research directions.

CHINESE JOURNAL OF CATALYSIS (2021)

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Review Chemistry, Multidisciplinary

Porphyrin-based frameworks for oxygen electrocatalysis and catalytic reduction of carbon dioxide

Zuozhong Liang et al.

Summary: This review discusses the wide application of porphyrin-based frameworks in energy-related conversion and storage technologies, performance comparison, and structure-activity relationship. Regulating the porous structures of frameworks and growing them on conductive supports enhance electrocatalytic performance.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Non-carbon-supported single-atom site catalysts for electrocatalysis

Xiaobo Zheng et al.

Summary: This review comprehensively summarizes the recent exciting progress on non-carbon-supported SACs and their applications in electrocatalytic reactions. Eight types of non-carbon-supported SACs are categorized to show their diversity, with detailed analysis of the anchoring and stabilization mechanisms. Advanced characterization techniques for identifying and monitoring the atomic structure of SACs are highlighted, along with discussions on their applications in electrochemical energy conversion.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Local spin-state tuning of cobalt-iron selenide nanoframes for the boosted oxygen evolution

Jun-Ye Zhang et al.

Summary: The study introduces cobalt-iron selenide nanoframes as a highly efficient electrocatalyst for water oxidation, achieving a low overpotential and outperforming most cobalt-based catalysts and even benchmarked commercial ruthenium oxides. Iron doping regulates the local spin state of cobalt species, accelerating charge transfer and formation of oxygenated intermediates, ultimately leading to enhanced oxygen evolution efficiency. This work may pioneer a promising approach in energy conversion technologies by tuning the local electronic structure to improve electrocatalysis activities.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Chemistry, Physical

3D Carbon Materials for Efficient Oxygen and Hydrogen Electrocatalysis

Ana Belen Jorge et al.

ADVANCED ENERGY MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Advanced Bifunctional Oxygen Reduction and Evolution Electrocatalyst Derived from Surface-Mounted Metal-Organic Frameworks

Weijin Li et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Online Monitoring of Electrochemical Carbon Corrosion in Alkaline Electrolytes by Differential Electrochemical Mass Spectrometry

Sandra Moeller et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Review Chemistry, Multidisciplinary

Metal-Organic Frameworks Based Electrocatalysts for the Oxygen Reduction Reaction

Xue Feng Lu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Physical

Identification of Efficient Active Sites in Nitrogen-Doped Carbon Nanotubes for Oxygen Reduction Reaction

Zhengyu Xu et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2020)

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Article Chemistry, Physical

Nitrogen and phosphorus co-doped carbon networks derived from shrimp shells as an efficient oxygen reduction catalyst for microbial fuel cells

Feng-Yi Zheng et al.

JOURNAL OF POWER SOURCES (2020)

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Article Chemistry, Multidisciplinary

Uniformity Is Key in Defining Structure-Function Relationships for Atomically Dispersed Metal Catalysts: The Case of Pt/CeO2

Joaquin Resasco et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Enabling Direct H2O2 Production in Acidic Media through Rational Design of Transition Metal Single Atom Catalyst

Jiajian Gao et al.

CHEM (2020)

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Article Chemistry, Multidisciplinary

Metal-Organic Framework-Derived Carbon Nanorods Encapsulating Bismuth Oxides for Rapid and Selective CO2 Electroreduction to Formate

Peilin Deng et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Materials Science, Multidisciplinary

Converting biomass into efficient oxygen reduction reaction catalysts for proton exchange membrane fuel cells

Xingdong Wang et al.

SCIENCE CHINA-MATERIALS (2020)

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Article Chemistry, Multidisciplinary

A Zeolitic-Imidazole Frameworks-Derived Interconnected Macroporous Carbon Matrix for Efficient Oxygen Electrocatalysis in Rechargeable Zinc-Air Batteries

Abdoulkader Ibro Douka et al.

ADVANCED MATERIALS (2020)

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Article Green & Sustainable Science & Technology

Sustainable production of value-added carbon nanomaterials from biomass pyrolysis

Shun Zhang et al.

NATURE SUSTAINABILITY (2020)

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Article Materials Science, Multidisciplinary

Synthesis of highly dispersed Pt nanoparticles into carbon supports by fluidized bed reactor atomic layer deposition to boost PEMFC performance

Woo-Jae Lee et al.

NPG ASIA MATERIALS (2020)

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Review Thermodynamics

Degradation mechanisms of proton exchange membrane fuel cell under typical automotive operating conditions

Peng Ren et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2020)

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