Identification and Understanding of Active Sites of Non-Noble Iron-Nitrogen-Carbon Catalysts for Oxygen Reduction Electrocatalysis

Zhili Yang; Yizhe Chen; Shiming ZhangJiujun Zhang

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Identification and Understanding of Active Sites of Non-Noble Iron-Nitrogen-Carbon Catalysts for Oxygen Reduction Electrocatalysis

机译：Identification and Understanding of Active Sites of Non-Noble Iron-Nitrogen-Carbon Catalysts for Oxygen Reduction Electrocatalysis

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Non-noble iron-nitrogen-carbon (Fe-N-C) catalysts have been explored asone type of the most promising alternatives of precious platinum (Pt) incatalyzing the oxygen reduction reaction (ORR). However, their catalytic ORRactivity and stability still cannot meet the requirement of practical applications.Active sites in such catalysts are the key factors determining the catalyticperformance. This review gives a critical overview on identification andunderstanding of active sties of non-pyrolytic and pyrolytic Fe-N-C catalystsin terms of design strategies, synthesis, characterization, functional mechanismsand performance validation. The diversity and complexity of activesites that greatly dominate the progress of Fe-N-C catalysts include Fe-containingsites (Fe-based nanoparticles and single-atom Fe-species) and metalfreesites (heteroatoms doping and defects). Meanwhile, synergistic effectsare also discussed in this review with emphasis on the interaction amongmultiple active sites. Although substantial endeavors have been devoted todevelop the efficient Fe-N-C catalysts, some challenges still remain. To facilitatefurther research on Fe-N-C catalysts toward practical applications, someresearch perspectives are prospected in the aspects of innovative synthesismethods, active-sites modulation strategies, high-resolution ex situ/in situ/operando characterization techniques, theoretical calculations, and so on.This review may provide a guideline for identifying and understanding activesitesfor developing high-performance Fe-N-C catalysts.

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来源
《Advanced functional materials》 |2023年第26期|2215185.1-2215185.28|共28页
作者
Zhili Yang; Yizhe Chen; Shiming ZhangJiujun Zhang;
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Institute for Sustainable Energy/College of SciencesShanghai UniversityShanghai 200444, China;

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正文语种英语
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active sites identification; design strategies; Fe-N-C catalysts; oxygen reduction electrocatalysis;

Identification and Understanding of Active Sites of Non-Noble Iron-Nitrogen-Carbon Catalysts for Oxygen Reduction Electrocatalysis

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