锂离子电池正极材料LiCo1／3Mn1／3Ni1／3O2的制备与性能研究

采用机械活化-高温固相法制备了锂离子电池正极材料LiCo1／3Mn1／3Ni1／3O2研究球磨方式与n（Li）／n（M）对合成产物结构与性能的影响。通过X射线衍射（XRD）、扫描电子显微镜（SEM）和电化学性能测试对所得样品的结构、形貌及电化学性能进行了表征。研究结果表明，优化试验条件下制备得到的材料具有良好的循环性能，在电压范围2．7～4．2V内，充放电的电流值为20mA／g时，初始放电比容量为160mA·h／g，30次循环后容量保持率为96．98％。

Synthesis and Performance of LiCo1/3Mn1/3Ni1/3O2 Cathode Material for Lithium-ion Battery

The LiCo1/3Mn1/3Ni1/3O2 cathode materials for lithium-ion batteries were synthesized by mechanical activation-high temperature solid-state method. The effect of reaction conditions （ n （ Li ）/n （ M ） and ball milling effects） on the structure of the products was investigated. The products were analyzed by X-ray diffraction spectroscopy （XRD） , scanning electron microscopy （ SEM ） and electrochemical tests. Under optimum condition the materials LiCo1/3Mn1/3Ni1/3O2 cathode had good cyclic performance. The initial discharge capacity was 160 mA.h/g at a current density of 20 mA/g between 2.7--4.5 V and the dis- charge capacity retention was 96.98% after 30 cycles.