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Author(s): |
Xiaowei He, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China;
Jincheng Liu, EVE Energy Co., Ltd, HuiZhou, 516006, P. R. China
Zhentao Zhou, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China; |
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Abstract: |
In order to improve the ion conductivity of lithium iron phosphate, the LiFePO4/Li1.3Al0.3Ti1.7 (PO4)3/C composite were synthesized by high temperature solid state method. The influences of firing time, firing temperature and doping contents of Li1.3Al0.3Ti1.7(PO4)3 on the structure and performance of the material were investigated. The structure and properties of the composites were characterized by X-ray diffraction, scanning electron microscopy and galvano-static charge-discharge method, respectively. The results showed that the material doped by 2wt.% of Li1.3Al0.3Ti1.7(PO4)3 which was sintered for 25h at 650°C exhibited the best electrochemical performances and finest particle size distribution about 50nm. When discharge at 0.1C, its discharge specific capacity was 157.7mAh/g.
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