Synthesis and Electrochemical Performance of a New Spherical LiFePO4

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (3): 641.

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Synthesis and Electrochemical Performance of a New Spherical LiFePO4

ZHANG Hao-Jie, WANG Kai-Xue, CHEN Jie-Sheng*

School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Received:2010-10-14 Revised:2011-01-01 Online:2011-03-10 Published:2011-02-23
Contact: CHEN Jie-Sheng E-mail:chemcj@sjtu.edu.cn
Supported by:
国家自然科学基金(批准号: 20731003)和国家自然科学基金青年基金项目(批准号: 20901050)资助.

Abstract

Abstract: Using glucose as a carbon source, we successfully obtained carbon-coated LiFePO4 spheres with controlled size and morphology. Fe5(PO4)4(OH)3?2H2O spheres with a diameter of about 5μm were first formed through hydrothermal reaction, and the surface of the Fe5(PO4)4(OH)3?2H2O spheres was uniformly coated with glucose. After carbonization at 500 oC, the Fe3(PO4)2(OH)2 spheres coated with carbon were obtained. Upon sintering with Li2CO3, the sphere morphology remains intact whereas the composition of the spheres converts to LiFePO4. The as-prepared LiFePO4 particles exhibit superior electrochemical performance.

Key words: Lithium iron batteries, Carbon-coating, LiFePO4, Glucose

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ZHANG Hao-Jie, WANG Kai-Xue, CHEN Jie-Sheng*. Synthesis and Electrochemical Performance of a New Spherical LiFePO4[J]. Chem. J. Chinese Universities, 2011, 32(3): 641.

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Synthesis and Electrochemical Performance of a New Spherical LiFePO4

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