高镍三元正极锂电池循环衰减分析

Analysis of Cycle Attenuation of High Nickel Ternary Cathode Lithium Battery

本研究专注于高镍三元正极锂电池循环性能的试验,先通过循环测试,得到该电池的容量衰退结果,之后用容量增量分析法对不同循环次数后的电池进行容量增量分析,预估其容量衰减原因,最后对循环后的电池进行拆解,分析电池正负极结构和表面元素组成后进一步确认电池的衰减原因。

This paper focuses on the experimental research on the cycle performance of high nickel ternary nickel lithium battery.Firstly,through the cycle test,the capacity decline results of the battery are obtained.Then,the capacity increment analysis is carried out for the battery after different cycles by the increment capacity analysis.The original cause of capacity attenuation is estimated.Finally,the battery after the cycle is disassembled,the cathode and anode structure and elements are analyzed.After the disassembly analysis,the estimation of attenuation reason of the battery are confirmed.