锂离子蓄电池容量衰减的研究  

Degradation analysis of commercial lithium-ion batteries

作　　者：李丽[1] 吴锋[1] 陈实[1] 陈人杰[2] 王芳[2] 

机构地区：[1]北京理工大学化工与环境学院,北京100081 [2]国家高技术绿色材料发展中心

出　　处：《现代化工》2006年第z2期204-206,共3页Modern Chemical Industry

基　　金：国家重点基础研究发展规划项目(2002CB211800);国家"863"计划项目(2005AA501620)

摘　　要：以手机用方型锂离子电池为研究对象,从其充放电过程中电压特性、容量特性及内阻等方面,对锂离子电池的容量衰减机制进行探讨与分析。结果说明电极材料相变或晶格的膨胀收缩、电解液的分解、活性物质的溶解、SEI膜的形成等现象是导致其容量衰减的主要原因。According to the characteristics of voltage,capacity and resistance during the charge/discharge process of commercial mobile telephone lithium-ion batteries,the degradation analysis and associated mechanisms are put forward and discussed.Results shows the phase change of electrode materials or the swell and shrink of crystal lattice,the decomposing of electrolyte,the dissolving of active materials and the SEI film formation are the major causes leading to the capacity degradation.

关 键 词：锂离子电池 容量衰减 内阻 

分 类 号：TM911[电气工程—电力电子与电力传动]