| 溶胶凝胶法合成锂离子电池正极材料LiMn2O4 |
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| 引用本文： | 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LiMn2O4[J]. 电化学, 2006, 12(1): 104-106 |
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| 作者姓名： | 何向明 王莉 张国昀 姜长印 万春荣 |
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| 作者单位： | 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;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;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;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;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 |
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| 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.
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| 关 键 词： | 溶胶凝胶 尖晶石锰酸理 合成工艺 已二酸 |
| 文章编号： | 1006-3471（2006）01-0104-003 |
| 收稿时间： | 2005-08-15 |
| 修稿时间： | 2005-09-08 |
Preparation of Spinel LiMn2O4 Cathode Materials for Li-ion Batteries Based on Sol-gel Process |
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| HE Xiang-ming,WANG Li,ZHANG Guo-yun,JIANG Chang-yin,WAN Chun-Rong. Preparation of Spinel LiMn2O4 Cathode Materials for Li-ion Batteries Based on Sol-gel Process[J]. Electrochemistry, 2006, 12(1): 104-106 |
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| Authors: | HE Xiang-ming WANG Li ZHANG Guo-yun JIANG Chang-yin WAN Chun-Rong |
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| 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. |
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| Keywords: | Sol-gel Spinel LiMn_(2)O_(4) Preparation Adipic acid |
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