电池2017，Vol.47Issue(6)：347-350,4.DOI:10.19535/j.1001-1579.2017.06.008
复合三元电池高温循环劣化分析
Degradation analysis of composite ternary battery after high temperature cycle
吴小兰 1王光俊 1陈炜 1张宏立1
作者信息
- 1. 合肥国轩高科动力能源有限公司,安徽合肥230011
- 折叠
摘要
Abstract
Using the prismatic Li-ion battery with capacity of 38 Ah based on LiNi0.6Co0.2Mn0.2O2 (NCM) and LiMn0.8 Fe0.2 PO4 (LMFP) blended cathode and graphite anode,the electrolyte and electrode influencing the cycle performance were analyzed.The anode was the main factor for cycle degradation.It was found that the graphite electrode represented 85.1％ of anode capacity loss.Electrochemical impedance spectroscopy(EIS) test results showed that the activity of Li + at graphite surface was reduced to lower level,which made electrochemical reaction more difficult,after high temperature cycling.SEM and BET specific surface area tests indicated that the surface structure of graphite was destroyed and the phase expanded.The change of graphite structure was the main factor for anode degradation.关键词
复合三元电池/高温/循环性能/容量损失/石墨Key words
composite ternary battery/high temperature/cycle performance/capacity fade/graphite分类
信息技术与安全科学引用本文复制引用
吴小兰,王光俊,陈炜,张宏立..复合三元电池高温循环劣化分析[J].电池,2017,47(6):347-350,4.
