Synthesis and electrochemical performances ofLiNi0.6Co0.2Mn0.2O2 cathode materials

来源期刊:中国有色金属学报(英文版)2009年第6期

论文作者:ZHONG Sheng-kui 李伟 邹正光 唐鑫

文章页码:1499 - 1503

Key words:lithium ion batteries; LiNi0.6Co0.2Mn0.2O2; cyclic voltammogram (CV)

Abstract: 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.

基金信息:Natural Science Foundation of Guangxi Province, China
the Research Funds of the Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment Program to Sponsor Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning, China

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