Synthesis of LiNi0.8Co0.1Mn0.1O2 cathode material by chloride co-precipitation method

ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 20 Special 1 May 2010

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Synthesis of LiNi_0.8Co_0.1Mn_0.1O₂ cathode material by chloride co-precipitation method

LI Ling-jun(李灵均), LI Xin-hai(李新海), WANG Zhi-xing(王志兴),
WU Ling(伍凌), ZHENG Jun-chao(郑俊超), LI Jin-hui(李金辉)

(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)

Abstract: LiNi_0.8Co_0.1Mn_0.1O₂ was prepared by a chloride co-precipitation method and characterized by thermogravimetric analysis, X-ray diffractometry with Rietveld refinement, electron scanning microscopy and electrochemical measurements. Effects of lithium ion content and sintering temperature on physical and electrochemical performance of LiNi_0.8Co_0.1Mn_0.1O₂ were also investigated. The results show that the sample synthesized at 750 ℃ with 105% lithium content has fine particle sizes around 200 nm and homogenous sizes distribution. The initial discharge capacity for the powder is 184 mA∙h/g between 2.7 and 4.3 V at 0.1C and room temperature.

Key words: lithium ion battery; LiNi_0.8Co_0.1Mn_0.1O₂; chloride co-precipitation; Rietveld refinement

Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
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