摘要
研究了水分对锂离子电池室温及45℃循环性能的影响.结果表明当水分含量超过0.023 5%时,池在室温(200循环容量衰减至83.4%)、45℃循环(100次容量衰减至84.1%以下)性能显著衰减.XRD和ICP测试结果表明,水分含量高的电池正极LiCoO2在循环过程中有明显的溶解现象.
The influence of water contamination on the cycling performance of lithium ion battery was investigated. The results show that at room temperature 200th cycle recoverable capacity is below 83.4% , and the 45 ℃ 100th cycle recoverable capacity is below 84. 1% when water content above 0. 023 5%. The results of XRD and ICP show that the dissolution of Co is serious in the cell with high content of water, which is responsible for the capacity loss.
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2009年第A02期115-117,共3页
Journal of South China Normal University(Natural Science Edition)
关键词
锂离子电池
循环性能
水分
正极溶解
lithium ion battery
cycling performance
water contamination
dissolution of positive pole
