摘要
层状富镍过渡金属氧化物正极材料因具有比容量高、价格低廉以及对环境友好等特性而受到广泛关注,并已在产品中应用。但其本身固有的一些缺陷,如在循环过程中结构稳定性较差、高温循环衰减过快、导电系数较低及储存性能不佳等,极大地限制了其在各个领域的广泛应用。本文对近年来高镍层状过渡金属氧化物正极材料在循环过程中容量衰减有关机理进行概括总结,并针对不同衰减机理给出简要改进方法。
Owing to advantages of high specific capacity,low cost and environmental friendliness,nickel-rich layered transition metal oxides cathode materials have attracted much attention and have been extensively applied in products over decade years.However,its inherent defects,such as poor structural stability in the cycle process,rapid decay at high temperature cycle,low conductivity and poor storage performance,greatly limit its wide application in various fields.In the paper,capacity degradation mechanism of nickel-rich layered transition metal oxides cathode materials,during cycling,was summarized.The improvement methods were proposed for different capacity degradation mechanisms.
作者
殷志刚
王静
曹敏花
YIN Zhi-gang;WANG Jing;CAO Min-hua(Beijing Idrive Automotive Co,Ltd,Beijing 102202,China;Beijing Institute of Technology,Beijing 100081,China)
出处
《新能源进展》
2020年第3期216-226,共11页
Advances in New and Renewable Energy
基金
国家自然科学基金面上项目(21872008)。
关键词
富镍正极
过渡金属氧化物
结构稳定性
容量衰减
nickel-rich cathode
transition metal oxides
structural stability
capacity degradation
