草酸盐法合成Li_aNi_(0.7)Co_(0.3)O_2及电化学性能研究  

Synthesis by Precipitated Nickel and Cobalt Oxalates and Electrochemical Property Studies of Li_aNi_(0.7)Co_(0.3)O_2

作　　者：黄元乔[1] 郭文勇[1] 甘雄 李道聪[1] 

机构地区：[1]武汉大学化学与分子科学学院

出　　处：《江汉大学学报（自然科学版）》2005年第1期29-31,共3页Journal of Jianghan University：Natural Science Edition

基　　金：国家自然科学基金资助项目(29771025)

摘　　要：采用草酸盐沉淀及高温固相反应相结合的方法合成了锂离子电池的活性正极材料Li_aNi_(0.7)Co_(0.3)O_2.XRD、SEM及电化学测试数据表明:该材料结晶及层状结构良好,首次充放电比容量为175.4mAh/g和142.9mAh/g,循环30次后放电比容量仍为136.0mAh/g,比容量损失只有4.8%.the cathode material LiaNi0.7Co0.3O2of lithium-cell was prepared by precipitated nickel and cobalt oxalates together with solid-state synthesized methods. The test datas of XRD and SEM and electrochemical properties showed that crystal and layer structure were excellent. Its charged and discharged capacities were 175.4 mAh/g and 142.9 mAh/g at the first cycle and still 136.0 mAh/ g after the 30th. Loss was only 4.8 %.

关 键 词：锂镍钴复合氧化物 正极材料 锂离子电池 比容量 

分 类 号：TM911[电气工程—电力电子与电力传动]