Synthesis and electrochemical performances of LiNi0.6Co0.2Mn0.2O2 cathode materials

摘要：

LiNi0.6Co0.2Mn0.2O2 was prepared from LiOH·H2O and MCO3 (M=Ni,Co,Mn) by co-precipitation and subsequent heating.XRD,SEM and electrochemical measurements were used to examine the structure,morphology and electrochemical characteristics,respectively.LiNi0.6Co0.2Mn0.2O2 samples show excellent electrochemical performances.The optimum sintering temperature and sintering time are 850 ℃ and 20 h,respectively.The LiNi0.6Co0.2Mn0.2O2 shows the discharge capacity of 148 mA·h/g in the range of 3.0-4.3 V at the first cycle,and the discharge capacity remains 136 mA·h/g after 30 cycles.The carbonate co-precipitation method is suitable for the preparation of LiNi0.6Co0.2Mn0.2O2 cathode materials with good electrochemical performance for lithium ion batteries.

关键词： lithium ion batteries LiNi0.6Co0.2Mn0.2O2 cyclic voltammogram(CV)

作者: ZHONG Sheng-kui LI Wei LI Yan-hong ZUO Zheng-guang TANG Xin

作者单位: Department of Material and Chemistry,Guilin University of Technology,Guilin 541004,China;Key Laborat Department of Material and Chemistry,Guilin University of Technology,Guilin 541004,China

会议类型: 国际会议

会议名称: 2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)

会议地点: 长沙

会议语种:英文

页码: 1499-1503

在线出版日期: 2009-11-22（万方平台首次上网日期，不代表论文的发表时间）