溶胶凝胶法合成锂离子电池正极材料LiMn_2O_4

电化学（中英文） ›› 2006, Vol. 12 ›› Issue (1): 104-106.

溶胶凝胶法合成锂离子电池正极材料LiMn_2O_4

何向明;王莉;张国昀;姜长印;万春荣;

清华大学核能与新能源技术研究院材料化学实验室,清华大学核能与新能源技术研究院材料化学实验室,清华大学核能与新能源技术研究院材料化学实验室,清华大学核能与新能源技术研究院材料化学实验室,清华大学核能与新能源技术研究院材料化学实验室北京102201,北京102201,北京102201,北京102201,北京102201

收稿日期:2006-02-28 修回日期:2006-02-28 出版日期:2006-02-28 发布日期:2006-02-28

Preparation of Spinel LiMn_2O_4 Cathode Materials for Li-ion Batteries Based on Sol-gel Process

HE Xiang-ming~

(*),WANG Li,ZHANG Guo-yun,JIANG Chang-yin,WAN Chun-Rong(Materials Chemistry Laboratory,Institute of Nuclear Energy & New Energy Technology,Tsinghua University,Beijing 102201,China

Received:2006-02-28 Revised:2006-02-28 Published:2006-02-28 Online:2006-02-28

摘要/Abstract

摘要： 应用溶胶法由CH3COOL i.2H2O、Mn(CH3COO)2和已二酸制备含锂、锰的干凝胶,经高温焙烧制得尖晶石锰酸锂L iMn2O4.XRD分析显示,该尖晶石样品的结晶度随焙烧温度而升高,容量同时增加,但如超过800℃,则循环性能变差.延长焙烧时间,容量呈先增后降趋势.优化后的焙烧条件为750℃、20 h.以此制备的L iMn2O4初始放电容量为130 mAh.g-1,经过15次循环后仍达125 mAh.g-1.

关键词: 溶胶凝胶, 尖晶石锰酸理, 合成工艺

Abstract: Spinel LiMn_(2)O_(4) was prepared from CH_(3)COOLi·2H_(2)O,Mn(CH_(3)COO)_(2) and adipic acid based on sol-gel process.XRD analysis showed that when the sintering temperature increased,the crystallinity increased,and the capacity also increased.However,its cycleability reached a maximum value at 750 ℃.The sintering duration also influenced on the capacity.The optimized performance was obtained when the sintering was carried out at 750 ℃ for 20 h.Under these conditions,as-prepared spinel LiMn_(2)O_(4) presented the initial discharge capacity of 130 mAh g~(-1) and 125 mAh g~(-1) at 15~(th) cycle.

Key words: Sol-gel, Spinel LiMn_(2)O_(4), Preparation, Adipic acid

中图分类号:

TM912.9

何向明;王莉;张国昀;姜长印;万春荣;. 溶胶凝胶法合成锂离子电池正极材料LiMn_2O_4[J]. 电化学（中英文）, 2006, 12(1): 104-106.

HE Xiang-ming~. Preparation of Spinel LiMn_2O_4 Cathode Materials for Li-ion Batteries Based on Sol-gel Process[J]. Journal of Electrochemistry, 2006, 12(1): 104-106.

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https://electrochem.xmu.edu.cn/CN/Y2006/V12/I1/104

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