Preparation and properties of LiFePO4/C composite materials with Fe2O3 as starting reactant

被引：0

作者：

Wang Guan ^{[1
]}

Su Gang ^{[1
]}

Yan Man-Ming ^{[1
]}

Cai Wen-Bin ^{[1
]}

Jiang Zhi-Yu ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2007年 / 28卷 / 01期

关键词：

Fe2O3; LiFePO4; lithium ion battery;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

LiFePO4 was considered as a new kind of cathode material candidate for lithium ion batteries due to its advantages. LiFePO4/C composites were successfully prepared from Fe2O3 via solid state reaction by a thermal reduction method in Ar + 5% ( volume fraction) H-2 atmosphere. The crystal structure and electrochemical behavior of the materials were investigated using XRD, SEM, CV and charge/discharge cycle measurements. Based on the results of TGA-DTA, LiFePO4/C Composites were synthesized at different temperatures, and it was found that the LiFePO4/C composites synthesized at 700 degrees C with 8.76% mass fraction carbon content presented the initial discharge capacity of 144.8 mA center dot h/g at 0.1 C, and after 160 cycles, the capacity remained as 141.4 mA center dot h/g. The method is available due to the low cost of Fe2O3 instead of using bivalent ferrous compound.

引用

页码：136 / 139

页数：4

共 11 条

[1] Lithium iron(II) phospho-olivines prepared by a novel carbothermal reduction method [J].