Study on Materials Prepared by Coating Carbon of Resin on Graphite Used as the Negative Electrode for Lithiusm Ion Batteries

Abstract

Abstract: The materials were prepared by coating the phenol formaldehyde resin on the surface of the natural flake graphite (NFG) powders using liquid-phase-
impregnation and pyrolysis. The charging-discharging performance of the materials used as the negative electrode for lithium ion batteries in
1M LiPF₆/EC+DEC(1:1) electrolyte solution was investigated by means of the galvanostatic charging-discharging experiments and the cyclic
voltammetry experiments. The influence of different heat treatment temperatures (HTT) on the charging-discharging behaviour of the materials
was discussed. The results show that the charging-discharging characteristics of the material heat-treated under 900℃ are as
follows: the third stable discharging capacity(D₃) is 213.75mA·h/g, the third cycling efficiency (η₃) is 88.69%, and the cycling
life is long. It can be used as the negative electrode for the high-performance lithium ion batteries.

Key words: lithium ion batteries, negative electrode, natural flake graphite(NFG), carbon of phenol formaldehyde resin, coating, the charging-discharging performance

CLC Number:

TM912

YANG Rui-Zhi,ZHANG Dong-Yu,ZHANG Hong-Bo,XU Zhong-Yu,YU Di-Hua,HE Yue-De. Study on Materials Prepared by Coating Carbon of Resin on Graphite Used as the Negative Electrode for Lithiusm Ion Batteries[J]. Journal of Inorganic Materials.

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Study on Materials Prepared by Coating Carbon of Resin on Graphite Used as the Negative Electrode for Lithiusm Ion Batteries

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