高镍三元正极材料改性研究进展  

Research Progress in Modification of Nickel-Rich Ternary Cathode Material

作　　者：王坤[1] 陈虹 王芬[1] 周绿山[1] 向文军[1] 张昊 WANG Kun;CHEN Hong;WANG Fen;ZHOU Lvshan;XIANG Wenjun;ZHANG Hao(School of Chemistry and Chemical Engineering,Sichuan University of Arts and Science,Dazhou 635000,China;Shaoxing Customs of the People′s Republic of China,Shaoxing 312000,China)

机构地区：[1]四川文理学院化学化工学院,四川达州635000 [2]中华人民共和国绍兴海关,浙江绍兴312000

出　　处：《化学与生物工程》2022年第4期11-17,共7页Chemistry & Bioengineering

基　　金：四川省教育厅一般项目(18ZB0513);四川文理学院校级项目(2017KZ003Y)。

摘　　要：高镍三元正极材料因高比容量而备受关注,然而其循环性能差、热稳定性差、安全性能也较差,从而限制了其商业化进程。分析了高镍三元正极材料存在的主要问题,如空气敏感、与电解液反应、阳离子混排、晶格氧析出、过渡金属离子迁出以及微裂纹形成等,对其改性方法(元素掺杂法、表面包覆法、结构调整法等)进行了综述,并对其未来发展趋势进行了展望。Nickel-rich ternary cathode material has attracted much attention due to high specific capacity.However,its poor cycle performance,poor thermal stability,and poor safety performance limit its commercialization process.In this paper,we analyze the main problems of nickel-rich ternary cathode material,such as air sensitivity,reaction with electrolyte,cation mixing,lattice oxygen precipitation,transition metal ion migration,and microcrack formation.Moreover,we review the modification methods,such as element doping method,surface coating method,and structure adjustment method,and put forward prospects in the future development trend.

关 键 词：高镍三元正极材料 比容量 循环稳定性 改性 

分 类 号：TQ152[化学工程—电化学工业] O646[理学—物理化学]