The Synthesis, Structure and Electrochemical Performances of Lithium Iron Phosphate

Authors

Hui XIE, 1.Department of Chemistry and Biology,Zhongshan Institute,University of Electronic Science & Technology of China,Zhongshan 528402,Guangdong,China,2.College of Material Science & Engineering,South-China University of Technology,Guangzhou 510640,Guangdong,China;Follow
Zhen-tao ZHOU, College of Material Science & Engineering,South-China University of Technology,Guangzhou 510640,Guangdong,China;

Corresponding Author

Hui XIE(huixiefly@126.com)

Abstract

The lithium iron phosphate cathode materials were synthesized by solid-state reaction combined high-rate ball milling under the temperature ranging from 400 ℃ to 700 ℃.The crystalline structure, morphology of particles, and electrochemical performance of the sample were investigated by X-ray diffraction, scanning electron microscopy and charge-discharge test. The results showed that the sintering temperature had great influences on the crystal structure, morphology and electrochemical performances of LiFePO₄. The sample synthesized under 600℃ showed the best charge-discharge performances with the first specific discharge capacity of(128.8) mAh/g and the 15^th specific discharge capacity of 129.1 mAh/g at 0.1C rate, each charge-discharge cycling efficiency being 99.7%. Also the sample showed good electrochemical performances under higher temperatures.

Keywords

Lithium-ion batteries, Cathode material, Lithium iron phosphate, High temperature performances

DOI Link

https://doi.org/10.61558/2993-074X.1756

Publication Date

2006-11-28

Online Available Date

2006-11-28

Revised Date

2006-04-06

Received Date

2006-01-11

Recommended Citation

Hui XIE, Zhen-tao ZHOU. The Synthesis, Structure and Electrochemical Performances of Lithium Iron Phosphate[J]. Journal of Electrochemistry, 2006 , 12(4): 378-381.
DOI: 10.61558/2993-074X.1756
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss4/5