锂离子电池正极材料<a name="OLE_LINK4">LiCo1/3Mn1/3Ni1/3O2</a>的制备与性能研究

摘要摘要采用机械活化-高温固相法制备了锂离子电池正极材料LiCo_1/3Mn_1/3Ni_1/3O₂。研究球磨方式与n(Li）/n(M）对合成产物结构与性能的影响。通过X射线衍射（XRD）、扫描电子显微镜（SEM）和电化学性能测试对所得样品的结构、形貌及电化学性能进行了表征。研究结果表明，优化试验条件下制备得到的材料具有良好的循环性能，在电压范围2.7~4.2 V内，充放电的电流值为20 mA/g时，初始放电比容量为160 mA·h/g，30次循环后容量保持率为96.98%。

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	刘环
	李永梅
	姚耀春
	魏钦帅
	戴永年
	范晏珉

关键词：锂离子电池正极材料 LiCo_1/3Mn_1/3Ni_1/3O₂ 机械活化-高温固相合成法电化学性能

Abstract： The LiCo_1/3Mn_1/3Ni_1/3O₂ cathode materials for lithiumion batteries were synthesized by mechanical activationhigh temperature solidstate method.The effect of reaction conditions（n(Li）/n(M）and ball milling effects）on the structure of the products was investigated.The products were analyzed by Xray diffraction spectroscopy（XRD），scanning electron microscopy（SEM）and electrochemical tests.Under optimum condition the materials LiCo_1/3Mn_1/3Ni_1/3O₂ cathode had good cyclic performance.The initial discharge capacity was 160 mA·h/g at a current density of 20 mA/g between 2.7—4.5 V and the discharge capacity retention was 9698% after 30 cycles.

Keywords： Liion battery cathode material LiCo_1/3Mn_1/3Ni_1/3O₂ mechanical activationhigh temperature solidstate method electrochemical behavior

Received 2011-09-06;

Fund:

国家自然科学基金（51002067）和云南省自然科学基金（200927049）项目资助。

About author: 刘环(1986-)，女，山东菏泽人，硕士研究生，现从事材料制备方面的研究。

引用本文:

刘环, 李永梅, 姚耀春, 魏钦帅, 戴永年, 范晏珉.锂离子电池正极材料LiCo_1/3Mn_1/3Ni_1/3O₂的制备与性能研究[J]. 化学工业与工程, 2012,29(01): 7-11

LIU Huan, LI Yong-Mei, YAO Yao-Chun, WEI Qin-Shuai, DAI Yong-Nian, FAN Yan-Min.Synthesis and Performance of LiCo_1/3Mn_1/3Ni_1/3O₂ Cathode Material for Lithiumion Battery[J]. Chemcial Industry and Engineering, 2012,29(01): 7-11