Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (02): 180-182.doi: 10.3866/PKU.WHXB20020218

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pyrolytic Carbon Coated Graphite Anode for Lithium Ion Battery

Chen Ji-Tao;Zhou Heng-Hui;Chang Wen-Bao;Ci Yun-Xiang   

  1. College of Chemistry and Molecular Engineering, Peking University,Beijing 100871
  • Received:2001-08-16 Revised:2001-10-11 Published:2002-02-15
  • Contact: Chang Wen-Bao E-mail:dxhx@chem.pku.edu.cn

Abstract: Carbon-coated natural graphite has been prepared by mixing graphite particles with benzene-naphthalene copolymer and thermaly treating the mixture under a nitrogen gas flow. The coated natural graphite showed about 10%higher reversible capacity and about 7% lower irreversible capacity as an anode material for lithium ion battery with pristine graphite. The cycling behavior of graphite was also improved after being coated. The X-ray diffraction (XRD) results showed that the rhombohedral phase fraction of natural graphite increased after being coated.

Key words: Lithium ion battery, Anode material, Coated natural graphite,