锂离子电池正极材料LiNi_(1-x)Co_xO_2的合成及电化学性能研究  

Synthesis and Electrochemical Performance of LiNi_(1-x)Co_xO_2 Cathode Materials for Lithium Ion Batteries

作　　者：黄元乔[1] 郭文勇[1] 李道聪[1] 彭正合[1] 周运鸿[1] 

机构地区：[1]武汉大学化学与分子科学学院

出　　处：《无机化学学报》2005年第5期736-740,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.29771025);国家九五重点攻关项目(No.29833090)资助。

摘　　要：LiNi1-xCoxO2 cathode materials for lithium ion batteries were synthesized by the co-precipitation and solid-state reaction methods with LiOH·H2O, Ni(NO3)2·6H2O and Co(NO3)2·6H2O as raw materials. The materials were characterized by XRD, SEM and electrochemical tests. The results showed that synthesized cathode materials were with layered structure similar to α-NaFeO2 and uniform morphology and nearly normal grain size distribution and better electrochemical performance when x was 0.18. The first charge and discharge capacity of the cathode material was 224.3 mAh·g-1 and 194.2 mAh·g-1, respectively. 88.5% of the first discharge capacity remained at the 20th cycle.LiNi1-xCoxO2 cathode materials for lithium ion batteries were synthesized by the co-precipitation and solid-state reaction methods with LiOH• H2O, Ni(NO3)(2)• 6H(2)O and Co(NO3)(2)•-6H(2)O as raw materials. The materials were characterized by XRD, SEM and electrochemical tests. The results showed that synthesized cathode materials were with layered structure similar to α-NaFeO2 and uniform morphology and nearly normal grain size distribution and better electrochemical performance when x was 0.18. The first charge and discharge capacity of the cathode material was 224.3 mAh• g(-1) and 194.2 mAh• g(-1), respectively. 88.5% of the first discharge capacity remained at the 20th cycle.

关 键 词：锂离子电池 性能研究 正极材料 电化学 Ni(NO3)2 first 合成 NORMAL and with the The was for ion RAW XRD SEM 

分 类 号：TM912[电气工程—电力电子与电力传动] G633.41[文化科学—教育学]