Preparation and electrochemical properties of LiFePO4/C composite cathodes for lithium-ion batteries

Three kinds of LiFePO4/C composites for lithium-ion batteries were prepared by solid-state reaction. The crystalline structure, morphology and specific surface area of the composites were investigated by X-ray diffraction, scanning electron microscopy and multi-point Brunauer, Emmett and Teller. The...

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Bibliographic Details
Published in:Bulletin of materials science 2006-12, Vol.29 (7), p.689-692
Main Authors: Chen, Han, Han, Shao-Chang, Yu, Wen-Zhi, Bo, Hong-Zhi, Fan, Chang-Ling, Xu, Zhong-Yu
Format: Article
Language:English
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Summary:Three kinds of LiFePO4/C composites for lithium-ion batteries were prepared by solid-state reaction. The crystalline structure, morphology and specific surface area of the composites were investigated by X-ray diffraction, scanning electron microscopy and multi-point Brunauer, Emmett and Teller. The results showed that the samples were all well-ordered olivine structures. A network structure, LiFePO4/C composite, was obtained using phenolic resin as carbon source. It possessed the highest specific surface area of 115.65 m2/g, exhibited the highest discharge capacity of 164.89 and 149.12 mAh/g at 0.1 C and 1 C rates, respectively. The discharge capacity was completely recovered when 0.1 C rate was applied again.
ISSN:0250-4707