相转移法制备LiCo_xNi_(1-x)O_2正极材料  

Synthesis of LiCo_xNi_(1-x)O_2 Cathode Materials by Phase-transfer Method

作　　者：王晓宇[1] 栗欢欢[1] 叶茂[1] 魏进平[1] 周震[1] 卞锡奎[1] 阎杰[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《南开大学学报（自然科学版）》2008年第2期27-30,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家973计划项目(2002CB211800);天津市应用基础研究计划项目(06YFJMJC13300)

摘　　要：Co 掺杂的 LiCo_xNi_(1-x)O_2材料具有优良的性能,有希望在锂离子二次电池中得到广泛应用.在电解法的基础上,通过相转移方法,制备了 LiCo_xNi_(1-x)O_2正极材料并对其进行了电化学性能测试.研究结果表明,合成的 LiCo_(0.3)Ni_(0.2)O_2正极材料具有良好的电化学性能,初始放电容量为156 mAh/g,经过40次充放电循环后放电容量仍可保持在140 mAh/g 左右.LiCoxNi1-xO2 cathode material was synthesized by a phase-transfer method based on electrolysis and was characterized by XRD and electrochemical testing. The LiCo0.3 Ni0. 702 cathode material synthesised at 700 ℃ had better electrochemical performances, and the discharge specific capacity in 1st and 40th cycles were 156 mAh/g and 140 mAh/g respectively.

关 键 词：锂离子电池 LiCoxNi1-xO2 正极材料 相转移 

分 类 号：TM911[电气工程—电力电子与电力传动]