Effect of cooling modes on microstructure and electrochemical performance of LiFePO4

被引：0
作者：
Guo-rong Hu
Xu-guang Gao
Zhong-dong Peng
Xian-yan Tan
Ke Du
Xin-rong Deng
Ye-xiang Liu
机构：
[1] Central South University,School of Metallurgical Science and Engineering
来源：
Journal of Central South University of Technology | 2007年 / 14卷
关键词：
Li-ion battery; cathode material; LiFePO; cooling mode; microstructure; electrochemical performance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
LiFePO4 was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube. Three kinds of cooling modes including nature cooling, air quenching, and water quenching were applied to comparing the effects of cooling modes on the microstructure and electrochemical characteristics of the material. The results indicate that the water quenching mode can control overgrowth of the grain size of final product and improve its electrochemical performance compared with nature cooling mode and air quenching mode. The sample synthesized by using water quenching mode is of the highest reversible discharge specific capacity and the best cyclic electrochemical performance, demonstrating the first discharge capacity of 138.1 mA·h/g at 0.1C rate and the total loss of capacity of 3.11% after 20 cycles.
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页码：647 / 650
页数：3
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