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Synthesis and electrochemical performance of LiMnPO4/C composites cathode materials

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Abstract

LiMnPO4/C composites were synthesized via solid-state reaction with different carbon sources: sucrose, citric acid and oxalic acid. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical performance test. The results of XRD reveal that carbon coating has no effect on the phase of LiMnPO4. The LiMnPO4/C synthesized at 600 °C with citric acid as carbon source shows an initial discharge capacity of 117.8 mAh·g−1 at 0.05 C rate. After 30 cycles, the capacity remains 98.2 mAh·g−1. The improved electrochemical properties of LiMnPO4/C is attributed to the decomposition of organic acid during the sintering process.

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Authors and Affiliations

  1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China

    Shengkui Zhong, Yuebin Xu, Yanhong Li, Honghu Zeng, Wei Li & Jian Wang

  2. Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, Guilin University of Technology, Guilin, 541004, China

    Shengkui Zhong, Yanhong Li & Honghu Zeng

Authors
  1. Shengkui Zhong
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  2. Yuebin Xu
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  3. Yanhong Li
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  4. Honghu Zeng
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  5. Wei Li
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  6. Jian Wang
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Correspondence to Yanhong Li.

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Zhong, S., Xu, Y., Li, Y. et al. Synthesis and electrochemical performance of LiMnPO4/C composites cathode materials. Rare Metals 31, 474–478 (2012). https://doi.org/10.1007/s12598-012-0542-3

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  • DOI: https://doi.org/10.1007/s12598-012-0542-3

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