引用本文:
余仲宝, 张胜利, 杨书廷, 丁立, 赵林治, 张明春. 烧结温度对锂离子电池正极材料LiCoO2结构与电化学性能的影响[J]. 应用化学,
1999, 16(4): 102-104.
Citation: Yu Zhongbao, Zhang Shengli, Yang Shuting, Ding Li, Zhao Linzhi, Zhang Mingchun. Effects of Sintering Temperature on the Structure and Electrochemical Property of LiCoO2[J]. Chinese Journal of Applied Chemistry, 1999, 16(4): 102-104.
Citation: Yu Zhongbao, Zhang Shengli, Yang Shuting, Ding Li, Zhao Linzhi, Zhang Mingchun. Effects of Sintering Temperature on the Structure and Electrochemical Property of LiCoO2[J]. Chinese Journal of Applied Chemistry, 1999, 16(4): 102-104.
烧结温度对锂离子电池正极材料LiCoO2结构与电化学性能的影响
摘要:
LiCoO2[1]和其它插入化合物LiNiO2[2],LiCo0.5Ni0.5O2,LiMn2O4[3]均可作高电压电池正极材料,和碳负极一起组成高容量的锂离子电池.其中LiCoO2由于具有放电电压高,性能稳定,易于合成等优点而倍受青睐,并已被许多公司用作正极材料而商品化[4].LiCoO2的合成一般采用高温固相反应法,以Li2CO3或LiOH·H2O同CoCO3等混合物为原料,在850℃左右长时间(~24h)烧结制备[5].由于固相颗粒混合不均匀,因此反应过程中必须多次研磨,使反应周期延长,工艺复杂.本实验采用低温湿法合成LiCoO2,并对其结构、表面形貌、电化学性能等进行了研究.
English
Effects of Sintering Temperature on the Structure and Electrochemical Property of LiCoO2
Abstract:
LiCoO2 for cathode of lithium ion battery has been prepared by evaporating a mixture solution of Li2CO3 and Co(CH3COO)2·4H2O in molar ratio of 1:2 and sintering at different temperatures. The XRD, SEM and electrochemical measurements showed that the product obtained from sintering at 800℃ for 6 hours has regular spheroid distribution, small size and the best electrochemical property.
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