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电化学  2006 

溶胶凝胶法合成锂离子电池正极材料LiMn_2O_4

, PP. 104-106

Keywords: 溶胶凝胶,尖晶石锰酸理,合成工艺

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Abstract:

应用溶胶法由CH3COOLi.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LiMn2O4.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℃、20h.以此制备的LiMn2O4初始放电容量为130mAh.g-1,经过15次循环后仍达125mAh.g-1.

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