正极材料LiCo_(1/3)Ni_(1/3)Mn_(1/3)O_2的制备与电化学性能  

Synthesis of LiCo_(1/3)Ni_(1/3)Mn_(1/3)O_2 as Cathode Material for Lithium Ion Batteries and Its Electrochemical Behavior

作　　者：谭才渊[1] 唐致远[1] 陈玉红[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《化学工业与工程》2006年第6期532-535,共4页Chemical Industry and Engineering

摘　　要：采用固相法和沉淀法合成了锂离子电池正极材料LiCo1/3Ni1/3Mn1/3O2。探讨了合成温度、不同合成方法对材料的电化学性能的影响。利用充放电测试、循环伏安测试方法对合成的LiCo1/3Ni1/3Mn1/3O2进行了表征。结果表明,固相法900℃煅烧合成的材料电化学性能较好,沉淀法合成的材料电化学性能最好,以10.0 mA/g的电流充放电,首次放电比容量为576.0 C/g,循环50次后放电比容量仍保持501.5 C/g。以100.0 mA/g的大电流放电,放电比容量达到430.2 C/g。The cathode material LiCo1/3Ni1/3Mn1/3O2 for lithium ion battery was prepared by both solid-phase method and the deposition method. The influences of the synthesis temperature and synthesis method on the electrochemical behaviors of LiCo1/3Ni1/3Mn1/3O2 were also analyzed, Its structure and electrochemical behavior were characterized and measured by virtue of constant-current charge-discharge and cyclic valtommetry tests, The results show that LiCo1/3Ni1/3Mn1/3O2 obtained by solid-phase method at 900 ℃ was better and that obtained by the deposition method was the best. The first specific discharging capacity was 576.0 C/g at 10.0 mA/g discharge current,510.5 C/g after 50 charging-discharging cycles,439.2 C/g when discharging at 100.0 mA/g discharge current.

关 键 词：正极材料 LiCo1/3Ni1/3Mn1/3O2 锂离子电池 

分 类 号：TM911.3[电气工程—电力电子与电力传动]