The Effects of Two-step Carbon Coating on the Electrochemical Properties of LiFePO<sub>4</sub>/C Cathode Material

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  • JIN Yun Xia
    College of chemistry and bioengineering, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of Technology
  • WU Chun Dan
    College of chemistry and bioengineering, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of Technology
  • ZHAN Taotao
    College of chemistry and bioengineering, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of Technology
  • LI Chao
    College of chemistry and bioengineering, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of Technology
  • YU Peng Fei
    College of chemistry and bioengineering, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of Technology
  • XIAO Shun Hua
    College of chemistry and bioengineering, Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of Technology

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  • The Effects of Two-step Carbon Coating on the Electrochemical Properties of LiFePO₄/C Cathode Material

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Abstract

Based on the method of in-situ polymerization synthesis, combining with two-step sintering process and two-step carbon coating, LiFePO4/C composite cathode material had been prepared. The structure, microstructure and morphology were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM) micrograph and scanning electron microscope (SEM) respectively. The electrochemical performances were researched by cyclic voltammetry (CV) and charge/discharge capacity. The results indicated that two-step carbon coating for LiFePO4 was of more remarkable advantages compared with one-step carbon coating sample, such as more complete carbon coating and better electrochemical performance.

Journal

  • Electrochemistry

    Electrochemistry 83 (3), 165-168, 2015

    The Electrochemical Society of Japan

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