Synthesis and Properties of Low Cost LiFePO4/C Cathode Material for Li-ion Battery

被引：0
作者：
Xu Tugen [1 ,2 ,3 ]
Wang Lianbang [1 ]
Li Sheng [1 ]
Ma Chunan [1 ]
机构：
[1] Zhejiang Univ Technol, State Key Lab Breeding Base Green Chem Synth Tech, Coll Chem Engn & Mat Sci, Hangzhou 310032, Zhejiang, Peoples R China
[2] Hangzhou Normal Univ, Key Lab Organosilicon Chem & Mat Technol, Educ Minist, Hangzhou 310012, Zhejiang, Peoples R China
[3] Hangzhou Normal Univ, Coll Mat & Chem Engn, Hangzhou 310036, Zhejiang, Peoples R China
来源：
ACTA CHIMICA SINICA | 2009年 / 67卷 / 20期
关键词：
lithium ion battery; cathode material; LiFePO4; carbon coated; ELECTROCHEMICAL PROPERTIES; PHOSPHO-OLIVINES;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
LiFePO4 is being used as the cathode material for Li-ion batteries of electric vehicle (EV) because of low cost and high safety. In this work, a carbon-coated LiFePO4 was synthesized by a thermal decomposition method using Li3PO4, FePO4, Fe powder and ethanol as the raw materials. Experimental results showed that LiFePO4/C particles were evenly distributed with the sizes of 200 nm similar to 1 mu m, the surface of particles was coated by carbon, and the particles were linked together by carbon fibers. The first discharge capacity of sample reached 137 mAh center dot g(-1) and the first columbic efficiency was over 95%. After 50 cycles, the discharge capacity still remained unchanged, which indicated the good cycle capability and reversibility. Our research lowered the cost of Li-ion batteries and provided a feasible application in Li-ion batteries for industrial production.
引用
收藏
页码：2275 / 2278
页数：4
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