Recent advances in cathode catalyst architecture for lithium–oxygen batteries  

作　　者：Yin Zhou Shaojun Guo 

机构地区：[1]School of Materials Science and Engineering,Peking University,Beijing,100871,China

出　　处：《eScience》2023年第4期65-80,共16页电化学与能源科学（英文）

基　　金：supported by National Science Fund for Distinguished Young Scholars(No.52025133);Tencent Foundation through the XPLORER PRIZE,and the Fund of the State Key Laboratory of Solidification Processing in NWPU(SKLSP202004);China Postdoctoral Science Foundation(No.2021M700211).

摘　　要：Lithium–oxygen(Li–O_(2))batteries have great potential for applications in electric devices and vehicles due to their high theoretical energy density of 3500 Wh kg^(-1).Unfortunately,their practical use is seriously limited by the sluggish decomposition of insulating Li_(2)O_(2),leading to high OER overpotentials and the decomposition of cathodes and electrolytes.Cathode electrocatalysts with high oxygen reduction reaction(ORR)and oxygen evolution re-action(OER)activities are critical to alleviate high charge overpotentials and promote cycling stability in Li–O_(2)batteries.However,constructing catalysts for high OER performance and energy efficiency is always challenging.In this mini-review,we first outline the employment of advanced electrocatalysts such as carbon materials,noble and non-noble metals,and metal–organic frameworks to improve battery performance.We then detail the ORR and OER mechanisms of photo-assisted electrocatalysts and single-atom catalysts for superior Li–O_(2)battery performance.Finally,we offer perspectives on future development directions for cathode electrocatalysts that will boost the OER kinetics.

关 键 词：Lithium–oxygen batteries Charge polarizations Energy barrier ELECTROCATALYSTS 

分 类 号：O64[理学—物理化学]