化学研磨法制备磷酸铁锂正极材料的结构性能研究.pdf

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第 25卷第 5期上海电力学院学报 Vol. 25, No. 5
2009年 10月 Journal of Shanghai U niversity of Electric Pow er Oct. 2009
文章编号: 1006 - 4729 (2009) 05 - 0513 - 04
化学研磨法制备磷酸铁锂正极材料2 的
结构性能研究
王保峰 1 ,许明玉 1 ,王晓波 1 ,黄慧杰 1 ,朱希平 2 ,黄德勇 2
(1. 上海电力学院能源与环境工程学院,上海 200090;
2. 宜昌欧赛科技有限公司,湖北宜昌 443005)
摘要: 磷酸铁锂被认为是最有可能应用于锂离子动力电池的正极材料. 采用化学研磨法制备了磷酸铁锂,
并对其结构和电化学性能进行了研究. 结果表明:相对于传统高温固相法,化学研磨法可以有效细化磷酸铁锂
的颗粒和晶粒,所得材料 0. 1 C放电容量为 132 mAh /g,明显高于传统固相法 112 mAh /g的容量.
关键词: 锂离子电池;磷酸铁锂;正极材料;化学研磨
中图分类号: TM911 文献标识码: A
Structural and Electrochem istry Performance of L iFePO4
Cathode Material Prepared by Chem ical Grinding M ethod
W ANG Bao feng1 , XU M ing yu1 , W ANG Xiao bo1 ,
HUANG Hui jie1 , ZHU Xi p ing2 , HUANG De yong2
(1. School of Therm al Pow er and Environm ental Engineering, Shanghai U niversity of Electric Pow er,
Shanghai 200090, China; 2. O cell Technology Co. L td. , Yichang 443005, China)
Abstract : L iFePO4 is one of the most p rom ising cathode materials for L ithium ion batteries.
L iFePO4 is synthesized by chem ical grinding method, and the structure and electrochem ical
performances are studied. The results show that L iFePO4 p repared by chem ical grinding method
p resents a discharge capacity of 134 mAh /g at 0. 1 C, which is much higher than that of the
L iFePO4 p repared by solid reaction method. SEM and XRD test shows that chem ic