Recent advances in regulating the performance of acid oxygen reduction reaction on carbon-supported non-precious metal single atom catalysts  

作　　者：Yanqiu Wang Jiayu Hao Yang Liu Min Liu Kuang Sheng Yue Wang Jun Yang Jie Li Wenzhang Li 

机构地区：[1]School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,Hunan,China [2]School of Physics and Electronics,Central South University,Changsha 410083,Hunan,China

出　　处：《Journal of Energy Chemistry》2023年第1期601-616,I0015,共17页能源化学（英文版）

基　　金：supported by the Joint Funds of the National Natural Science Foundation of China(U20A20280);the Postgraduate Scientific Research Innovation Project of Hunan Province(CX20210171)。

摘　　要：Developing high performance and low-cost catalysts for oxygen reduction reaction(ORR)in challenging acid condition is vital for proton-exchange-membrane fuel cells(PEMFCs).Carbon-supported nonprecious metal single atom catalysts(SACs)have been identified as potential catalysts in the field.Great advance has been obtained in constructing diverse active sites of SACs for improving the performance and understanding the fundamental principles of regulating acid ORR performance.However,the ORR performance of SACs is still unsatisfactory.Importantly,microenvironment adjustment of SACs offers chance to promote the performance of acid ORR.In this review,acid ORR mechanism,attenuation mechanism and performance improvement strategies of SACs are presented.The strategies for promoting ORR activity of SACs include the adjustment of center metal and its microenvironment.The relationship of ORR performance and structure is discussed with the help of advanced experimental investigations and theoretical calculations,which will offer helpful direction for designing advanced SACs for ORR.

关 键 词：Oxygen reduction reaction Single atom catalysts Microenvironment of center metal Regulation of center metal atoms Electron structure Proton-exchange-membrane fuel cells 

分 类 号：TM911.4[电气工程—电力电子与电力传动]