Recent progress on understanding of micro-and electronicstructures to synergistically enable the activity and stability for oxygen reduction  

作　　者：Yao Liu Ruisi Li Junjun Xia Chenyang Shu Jianhong Liu Shaoxin Yan Rong Jin Haifeng Chen Liumei Teng Yujun Si Chaozhong Guo Yuxin Zhang Quan Xu 

机构地区：[1]School of Materials Science and Engineering,Chongqing University of Arts and Sciences,Chongqing 402160,China [2]College of Material Science and Engineering,Chongqing University,Chongqing 400044,China [3]College of Materials Science and Engineering,Central South University,Changsha 410083,China [4]Moray House school of education and sport,the university of Edinburgh,Edinburgh EH88AQ,UK [5]College of Chemistry and Environmental Engineering,Sichuan University of Science and Engineering,Zigong 643000,China [6]State Key Laboratory of Heavy Oil Processing,China University of Petroleum(Beijing),Beijing 102249,China

出　　处：《Nano Research》2025年第3期48-72,共25页纳米研究(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22478423 and 22275026);the Natural Science Foundation for Distinguished Young Scholars of Chongqing,China(No.CSTB2023NSCQJQX0032);the key project of Chongqing Science and Technology Bureau(No.CSTB2022TIAD-KPX0041).

摘　　要：Single-atom catalysts(SACs)are considered as the most promising nonprecious metal alternatives for oxygen reduction reactions(ORR)in proton exchange membrane fuel cells because of their high atomic utilization and excellent catalytic performance.However,the inadequate activity and long-term stability of SACs under operational conditions significantly hinder their practical application.Therefore,this paper focuses on understanding the micro-and electronic structures that synergistically enable the activity and stability of oxygen reduction.It provides a comprehensive summary of the effects for improving the ORR catalytic activity and stability of SACs from a multilevel,multi-angle perspective,including macroscale adjustments to the overall catalyst structure,nanoscale optimization of the catalyst microstructure,and atomic-scale regulation of the active sites.Additionally,it emphasizes the importance of advanced simulation,computational methods,and characterization techniques in understanding the catalytic and degradation mechanisms of SACs during the ORR process.This review aims to provide a theoretical foundation for the synergistic catalytic mechanisms and long-term stable operation of catalytic sites in complex heterogeneous environments,thereby advancing research on low-cost,high-efficiency,and highly stable single-atom catalysts.

关 键 词：single-atom catalysts(SACs) oxygen reduction reactions(ORR) structural regulation 

分 类 号：O64[理学—物理化学]