Effect of Mg and Co co-doping on electrochemical properties of LiFePO4 |
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| Authors: | Yan-huai DING Ping ZHANG |
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| Affiliation: | 1. College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China;2. Institute of Rheology Mechanics, Xiangtan University, Xiangtan 411105, China |
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| Abstract: | LiFePO4 co-doped with Mg2+ and Co4+ ions was synthesized by a solid state reaction method. The structure and electrochemical properties of the prepared LiFe0.99Mg0.005Co0.005PO4 were investigated by X-ray diffraction (XRD), galvanostatic charge-discharge experiment and cyclic voltammograms (CV). Specific discharge capacity of LiFePO4 co-doped with Mg and Co ions reach 147.2 mA·h/g at 0.1C and 133.3 mA·h/g at 1C. The results of CV show that the reversibility of lithium extraction/insertion in LiFePO4 can be promoted by (Mg2+, Co4+) multiple-ion doping. |
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