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

Yun Xia JIN; Chun Dan WU; Taotao ZHAN; Chao LI; Peng Fei YU; Shun Hua XIAO

doi:10.5796/electrochemistry.83.165

Technological Report

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

Yun Xia JIN, Chun Dan WU, Taotao ZHAN, Chao LI, Peng Fei YU, Shun Hua XIAO

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Keywords: LiFePO₄/C Cathode Material, In-situ Polymerization, Two-step Carbon Coating, Electrochemical Properties

JOURNAL FREE ACCESS

2015 Volume 83 Issue 3 Pages 165-168

DOI https://doi.org/10.5796/electrochemistry.83.165

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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.

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