Abstract
Recently,metal selenides have obtained wide-spread attention as electrode materials for alkali(Li+/Na+/K+)batteries due to their promising theoretical capacity and mechanism.Nevertheless,metal selenides,similar to metal oxides and sulfides,also suffer from severe volume explosion during repeated charge/discharge processes,which results in the structure collapse and the following pulverization of electrode materials.Hence,it leads to poor cycle stability and influencing their further application.In order to solve these issues,some special strategies,including elemental doping,coupling with carbon materi-als,synthesis of the bimetal selenides with heterostructure,etc.,have been gradually applied to design novel electrode materials with outstanding electrochemical performance.Herein,the recent research progress on metal selenides as anodes for alkali ion batteries is summarized,including the regulation of crystal structure,synthesis strategies,modi-fication methods,and electrochemical mechanisms and kinetics.Besides,the challenges of metal selenides and the perspective for future electrode material design are pro-posed.It is hoped to pave a way for the development of metal selenide electrode materials for the potential appli-cations for alkali metal ion(Li+/Na+/K+)batteries.
基金项目
National Natural Science Foundation of China(51563002)
National Natural Science Foundation of China(52101243)
the"100-level"Innovative Talents Project of Guizhou Province,China([2016]5653)
Natural Science Foundation of Guangdong Province(2020A1515010886)
Science and Technology Planning Project of Guangzhou(202102010373)
NETL
NSTL
万方数据