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Issue 28, 2014
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Lithium reaction mechanism and high rate capability of VS4–graphene nanocomposite as an anode material for lithium batteries

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Abstract

A graphene-attached VS4 composite prepared by a simple hydrothermal method is studied in terms of its lithium reaction mechanism and high rate capability. The nanocomposite exhibits a good cycling stability and an impressive high-rate capability for lithium storage, delivering a comparable capacity of 630 and 314 mA h g−1, even at high rates of 10 and 20 C (=10 and 20 A g−1, or 10 and 20 mA cm−2), respectively. In addition, full-cell (LiMn2O4/VS4–graphene) test results also exhibited a good capacity retention. The mechanism of Li storage is systematically studied and a conversion reaction with an irreversible phase change during the initial discharge–charge process is proposed.

Graphical abstract: Lithium reaction mechanism and high rate capability of VS4–graphene nanocomposite as an anode material for lithium batteries

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Publication details

The article was received on 22 Jan 2014, accepted on 05 Mar 2014 and first published on 05 Mar 2014


Article type: Paper
DOI: 10.1039/C4TA00371C
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2014,2, 10847-10853
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    Lithium reaction mechanism and high rate capability of VS4–graphene nanocomposite as an anode material for lithium batteries

    X. Xu, S. Jeong, C. S. Rout, P. Oh, M. Ko, H. Kim, M. G. Kim, R. Cao, H. S. Shin and J. Cho, J. Mater. Chem. A, 2014, 2, 10847
    DOI: 10.1039/C4TA00371C

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