电极材料Li_aNi_(0.7)Co_(0.3)O_2的合成及电化学性质  

Synthesis and Electrochemical Properties of Li_aNi_(0.7)Co_(0.3)O_2

作　　者：黄元乔[1] 

机构地区：[1]湖北第二师范学院化学与生命科学系,武汉430205

出　　处：《湖北第二师范学院学报》2009年第2期4-6,共3页Journal of Hubei University of Education

基　　金：湖北省教育厅科学技术研究项目;项目编号:B200531004

摘　　要：采取三种方法合成了镍钴酸锂电极材料LiaNi0.7Co0.3O2,用电化学实验方法研究了合成方法对材料的电化学性能的影响,材料用XRD表征。结果表明:通过预处理后合成的电极材料具有较好的电化学性能,首次充放电比容量可达到196.5和167.9 mAh.g-1。Nickel -based complex oxide LiaNi0.TCo0.3O2 was prepared with 3 different methods. It was studied that effect of synthetic methods of LiaNi0.7CO0.302 cathode materials on their performance. XRD investigated its structure. The results demonstrated that prepared cathode materials by the improved solid -state reaction synthetic method using coprecipitated Co -Ni hydroxides had an inferior cyclic performance and a higher dischargeable capacity. Its charged and discharged capacities were 196.5 and 167.9 mAh·g^-1 at the first cycle.

关 键 词：锂离子电池 电极材料 镍钴酸锂 

分 类 号：TM911[电气工程—电力电子与电力传动]