石墨/[Li(Ni_(0.4)Co_(0.2)Mn_(0.4))O_2+LiMn_2O_4]电池循环过程的研究  

Research of cycle process of graphite/[Li(Ni_(0.4)Co_(0.2)Mn_(0.4))O_2+LiMn_2O_4] battery

作　　者：张建[1] 刘浩涵[1] 杨传铮[1] 夏保佳[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《电源技术》2013年第2期183-186,共4页Chinese Journal of Power Sources

基　　金：上海市科委重大项目子课题(11DZ1100205);中科院院地合作项目(DBSH-2011-009);上海市科委纳米专项(12nm0500100)

摘　　要：研究了石墨/[Li(Ni0.4Co0.2Mn0.4)O2+LiMn2O4]锂离子电池在循环过程中容量的衰减和正负极活性材料精细结构的变化。Li(Ni0.4Co0.2Mn0.4)O2在循环过程中晶体结构的保持能力要优于LiMn2O4。循环过程中正负极活性材料点阵参数、微晶尺寸、堆垛无序和微应变等精细结构的演变与电池的循环性能具有关联性。Capacity fading and the fine structure of electrode materials of a graphite/[Li（Ni0.4Co0.2M n0.4）O2＋LiM n2O4] battery during cycle were investigated. The experimental results reveal that the stability of crystal structure of Li（Ni0.4Co0.2Mn0.4）O2 is better than LiMn2O4 during cycle, The cycle performance of battery Js related to the changing of the fine structure of electrode materials, including lattice parameter, crystallite size, micro-strain and stacking disorder.

关 键 词：锂离子电池 精细结构 循环性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]