Li[Li_(0.182)Ni_(0.182)Co_(0.091)Mn_(0.545)]O_2的高温性能  

High temperature performance of Li[Li_(0.182)Ni_(0.182)Co_(0.091)Mn_(0.545)]O_2

作　　者：甘朝伦 詹晖[2] 周运鸿[2] 

机构地区：[1]张家港市国泰华荣化工新材料有限公司,江苏张家港215631 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《电池》2009年第4期198-199,共2页Battery Bimonthly

摘　　要：在60℃下，Li[Li0．182Ni0．182Co0．091Mn0．545]O2正极材料在2．0～4．3V充放电，比容量从首次循环时的111．0mAh／g上升到第30次循环时的138．9mAh／g；而在2．0～4．6V充放电，比容量从首次循环时的261．0mAh／g下降到第18次循环时的245．1mAh／g。在室温下，不管是在2．0—4．3V还是在2．0～4．6V充放电，比容量基本不变。这是因为在60℃下充放电时，Li[Li0．182Ni0．182Co0．091Mn0．545]O2中的Mn^4＋被不断“激活”。When charge-discharged at 60 ℃ in 2.0 - 4.3 V, the specific capacity of Li[Li0.182Ni0.182Co0.091Mn0.545]O2 cathode material increased from 111.0 mAh/g of initial cycle to 138.9 mAh/g of the 30th cycle; while charge-discharged in 2.0 - 4.6 V, the specific capacity reduced from 261.0 mAh/g of initial cycle to 245.1 mAh/g of the 18th cycle. At room temperature, the specifiecapacity was almost unchanged when charge-discharged both in 2.0 - 4.3 V and 2.0 - 4.6 V. The reason was that the Mn4 ＋ in Li[Li0.182Ni0.182Co0.091Mn0.545]O2was kept activated when charge-discharged at 60℃

关 键 词：锂离子电池 正极材料 层状结构 Li[Li0.182Ni0.182Co0.091Mn0.545]O2 高温 

分 类 号：TM912.9[电气工程—电力电子与电力传动]