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Chelation-assisted method for the preparation of cathode material LiFePO4

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Abstract

LiFePO4/C composite cathode material is prepared by ball milling with the assistance of EDTA chelation with using water as the media of ball mill procedure. FePO4 and LiOH are used as starting materials; a certain amount of glucose is used as carbon sources and reduction agent. The structure and morphology of the composite are characterized by X-ray diffraction and scanning electron microscopy. Cyclic voltammetry, AC impedance measurements, and galvanostatic charge–discharge and cycling performances are used to characterize its electrochemical properties. The results indicate that the performances of composites prepared by chelation-assisted method are much better than common ball milling method which using alcohol or acetone as the media of ball mill procedure. The stable discharge capacity of the prepared composite is 150 and 105 mAh g−1 at 1 and 10 C rate, respectively.

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Authors and Affiliations

  1. Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumuqi, Xinjiang, 830011, China

    Chengfeng Li, Ning Hua, Chenyun Wang, Xueya Kang, Tuerdi Wumair & Ying Han

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

    Chengfeng Li, Ning Hua & Chenyun Wang

  3. Xinjiang Key Laboratory of Electronic Information Materials and Devices, Urumqi, Xinjiang, 830011, China

    Chengfeng Li, Ning Hua, Chenyun Wang, Xueya Kang, Tuerdi Wumair & Ying Han

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  1. Chengfeng Li
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  2. Ning Hua
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  3. Chenyun Wang
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  4. Xueya Kang
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  5. Tuerdi Wumair
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Correspondence to Xueya Kang.

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Li, C., Hua, N., Wang, C. et al. Chelation-assisted method for the preparation of cathode material LiFePO4 . J Solid State Electrochem 15, 1971–1976 (2011). https://doi.org/10.1007/s10008-010-1217-3

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  • DOI: https://doi.org/10.1007/s10008-010-1217-3

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