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Issue 3, 2010
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General synthesis of carbon-coated nanostructure Li4Ti5O12 as a high rate electrode material for Li-ion intercalation

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Abstract

A simple approach is proposed to synthesize nanostructured Li4Ti5O12 spinel materials with different morphologies (nanorods, hollow spheres and nanoparticles), in which the TiO2 precursor is first coated with a conductive carbon layer by the chemical vapour decomposition (CVD) method, followed by a solid-state reaction with lithium salt. The Li4Ti5O12 obtained was characterised by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), as well as galvanostatic measurements. The results indicate that, by employing the carbon pre-coating process, the carbon-coated nanostructured Li4Ti5O12 can maintain the initial morphologies of the TiO2 precursors and also show significant improvement in the rate capability for lithium-ion intercalation due to both good electronic conductivity and the short lithium-ion diffusion path.

Graphical abstract: General synthesis of carbon-coated nanostructure Li4Ti5O12 as a high rate electrode material for Li-ion intercalation

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Publication details

The article was received on 20 Jul 2009, accepted on 26 Oct 2009 and first published on 20 Nov 2009


Article type: Paper
DOI: 10.1039/B914604K
Citation: J. Mater. Chem., 2010,20, 595-602
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    General synthesis of carbon-coated nanostructure Li4Ti5O12 as a high rate electrode material for Li-ion intercalation

    L. Cheng, J. Yan, G. Zhu, J. Luo, C. Wang and Y. Xia, J. Mater. Chem., 2010, 20, 595
    DOI: 10.1039/B914604K

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