卢阳;童庆松;翁秀燕;李变云;黄维静;

• 1:福建师范大学化学与材料学院

摘要(Abstract)：

采用固相烧结法,在惰性气氛下制备了橄榄石型LiFePO4/C正极材料.通过充放电循环实验、循环伏安实验、交流阻抗、拉曼光谱等测试方法,研究了样品的优化制备条件与电化学性能的关系.研究表明,当以草酸亚铁为铁源时,720℃烧结的样品以1C倍率电流充放电时,首次放电容量为113mAh/g,50循环的放电容量为116mAh/g,表现出优秀的循环稳定性.在30循环内,样品的电荷传递阻抗随着充放电循环的进行而减小.锂离子扩散系数为1.56×10-8cm2/s.

关键词(KeyWords)： 锂离子电池;固相烧结;正极材料;磷酸亚铁锂

Abstract:

Keywords:

基金项目(Foundation): 教育部重点项目(03065);; 福建省教育厅基金资助项目(JA07033);; 福建省自然科学基金资助项目(2008J0144)

作者(Authors): 卢阳;童庆松;翁秀燕;李变云;黄维静;

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