PGM-free single atom catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells

Bai, Jirong; Lin, Yao; Xu, Jinnan; Zhou, Wangkai; Zhou, Pin; Deng, Yaoyao; Lian, Yuebin

doi:10.1039/d4cc02106a

Chem. Commun.

2024

DOI: 10.1039/d4cc02106a

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PGM-free single atom catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells

Jirong Bai,

Yao Lin,

Jinnan Xu

et al.

Abstract: The progress of proton exchange membrane fuel cells (PEMFCs) in the clean energy sector is notable for its efficiency and eco-friendliness, although challenges remain in terms of durability, cost and power density.

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Cited by 3 publications

References 116 publications

(141 reference statements)

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Modulating the Local Coordination Environment of M‐N_x Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Bai,

Sun,

Zhang

et al. 2024

Adv Funct Materials

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Efficient, durable, and economical oxygen reduction catalysts are key for practical applications such as fuel cells and metal–air batteries. Single atom catalysts (SACs) have attracted sustained and widespread attention owing to their unique electronic properties and exceptional atomic utilization, positioning them as promising electrocatalysts in energy conversion and storage. However, the symmetric charge distribution of the metal site in the symmetric M‐N4 configuration of SACs is not conducive to electron transfer and transport in electrocatalytic reactions, resulting in a low adsorption energy for oxygen reduction reaction (ORR) related species (*OH, *O, and *OOH), which severely limits the intrinsic activity of the electrocatalysts. To overcome this limitation and improve the activity and durability, heteroatom doping can effectively modulate the local coordination environment (LCE) of the metal atom, including the coordinating atoms, coordination shells and coordination number. These modifications have significantly improved the performance of carbon supported SACs with M‐N4 configuration in the ORR. Based on this, a thorough summary of the major progress made in recent years in adjusting the LCE of SACs through doping with heteroatoms is provided and a perspective on the future development is offered here.

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Modulating the Local Coordination Environment of M‐N_x Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Bai,

Sun,

Zhang

et al. 2024

Adv Funct Materials

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Unlocking the potential of Pt-based and metal oxides catalysts in liquid fuel cells technologies: Performance and challenges

Che Ramli,

Pasupuleti,

Zainoodin

et al. 2024

Ain Shams Engineering Journal

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Recent Advances in Single-atom Catalysts for Electrochemical Nitrate Reduction to Ammonia

Yang,

Zhu,

et al. 2024

Journal of Environmental Chemical Engineering

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PGM-free single atom catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells

Abstract: The progress of proton exchange membrane fuel cells (PEMFCs) in the clean energy sector is notable for its efficiency and eco-friendliness, although challenges remain in terms of durability, cost and power density.

Cited by 3 publications

References 116 publications

Modulating the Local Coordination Environment of M‐N_x Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Modulating the Local Coordination Environment of M‐N_x Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Unlocking the potential of Pt-based and metal oxides catalysts in liquid fuel cells technologies: Performance and challenges

Recent Advances in Single-atom Catalysts for Electrochemical Nitrate Reduction to Ammonia

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PGM-free single atom catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells

Abstract: The progress of proton exchange membrane fuel cells (PEMFCs) in the clean energy sector is notable for its efficiency and eco-friendliness, although challenges remain in terms of durability, cost and power density.

Cited by 3 publications

References 116 publications

Modulating the Local Coordination Environment of M‐Nx Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Modulating the Local Coordination Environment of M‐Nx Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Unlocking the potential of Pt-based and metal oxides catalysts in liquid fuel cells technologies: Performance and challenges

Recent Advances in Single-atom Catalysts for Electrochemical Nitrate Reduction to Ammonia

Contact Info

Product

Resources

About

Modulating the Local Coordination Environment of M‐N_x Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction

Modulating the Local Coordination Environment of M‐N_x Single‐Atom Site for Enhanced Electrocatalytic Oxygen Reduction