摘要
富锂锰基NCM正极材料是有望解决电动汽车等领域对高比容量锂离子电池要求的最具潜力的正极材料,但仍存在首次不可逆容量大、高电压高倍率高温下循环性能差等缺陷。分析总结了包覆和掺杂改性对NCM的首次充放电容量、倍率特性、循环性能及阻抗的影响,并展望了今后的研究方向。
Li-rich Mn-based NCM cathode material was a promising candidate of the cathode materials which would well satisfy the requirements in hybrid electric vehicles and other areas for its high specific capacity.But it had some defects such as the large initial irreversible capacity and poor cycle ability at high power,high rate and high temperature.The influences of the coating,doping on the electrochemical performances of Li-rich Mn-based NCM cathode materials,such as the first cycle irreversible capacity,rate capability,cycle abilities and impedance,were discussed and analyzed.And then some works in the future were proposed.
作者
高玉梅
杨文鑫
刘萍
陈卉
GAO Yu-mei;YANG Wen-xin;LIU Ping;CHEN Hui(Zhongshan Institute, University of Electronic Science and Technology, Zhongshan Guangdong 528402, China)
出处
《电源技术》
CAS
CSCD
北大核心
2017年第8期1198-1201,1216,共5页
Chinese Journal of Power Sources
基金
国家自然科学基金(113050310)
广东省高等学校优秀青年教师培养计划(Yq2013205)
中山市科技计划(2015B2360
2015B2341)
关键词
NCM
表面包覆
掺杂
改性
电化学性能
NCM
surface coating
doping
modification
electrochemical performance
