Issue 11, 2004
From the journal:

Journal of Materials Chemistry

Improvement of natural graphite as a lithium-ion battery anode material, from raw flake to carbon-coated sphere†

Masaki Yoshio,*a   Hongyu Wang,b   Kenji Fukuda,c   Tatsuo Umeno,c   Takeshi Abeb  and  Zempachi Ogumib  

* Corresponding authors

a Department of Applied Chemistry, Saga University, Honjo 1, Saga 840-8502, Japan

b Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan

c Research Center, Mitusi Mining Co. Ltd., 1-3 Hibikimachi, Wakamatsu-ku, Kitakyushu 808-0021, Japan

Abstract

Natural graphite is a promising candidate for the anode material in lithium-ion batteries. To enhance its electrochemical performance, raw natural graphite flakes have been rolled into spheres by impact milling and then coated with carbon by thermal vapor decomposition (TVD). The obtained spherical graphite samples show excellent performance in terms of high rate capacity, high reversible capacity, high coulombic efficiency and low irreversible capacity. The improvements in performance have been mainly correlated with the morphologies of carbon-coated spherical graphite.

Graphical abstract: Improvement of natural graphite as a lithium-ion battery anode material, from raw flake to carbon-coated sphere

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Article information

DOI
https://doi.org/10.1039/B316702J
Article type
Paper
Submitted
19 Dec 2003
Accepted
23 Mar 2004
First published
07 May 2004

J. Mater. Chem., 2004,14, 1754-1758

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Improvement of natural graphite as a lithium-ion battery anode material, from raw flake to carbon-coated sphere

M. Yoshio, H. Wang, K. Fukuda, T. Umeno, T. Abe and Z. Ogumi, J. Mater. Chem., 2004, 14, 1754 DOI: 10.1039/B316702J

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