Synthesis and electrochemical performances of LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2 cathode materials  

作　　者：钟胜奎 李伟 李艳红 邹正光 唐鑫 

机构地区：[1]Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China [2]Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China

出　　处：《中国有色金属学会会刊：英文版》2009年第6期1499-1503,共5页Transactions of Nonferrous Metals Society of China

基　　金：Projects(0991025,0842003-5 and 0832259)supported by Natural Science Foundation of Guangxi Province,China;Project supported by the Joint Graduate Innovation Talent Cultivation Base of Guangxi Province,China;Project (GuiJiaoRen[2007]71)supported by the Research Funds of the Guangxi Key Laboratory of Environmental Engineering,Protection and Assessment Program to Sponsor Teams for Innovationin the Construction of Talent Highlands in Guangxi Institutions of Higher Learning,China

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.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：电化学性能 阴极材料 合成 放电容量 共沉淀法 锂离子电池 氢氧化锂 测量方法 

分 类 号：TM910.4[电气工程—电力电子与电力传动]