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Issue 13, 2012
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Improved cyclability of lithium-ion battery anode using encapsulated V2O3 nanostructures in well-graphitized carbon fiber

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Abstract

A novel one-dimensional (1D) V2O3@carbon nanocomposite has been successfully synthesized for the first time. In the synthesis procedure, the previously obtained V2O5·xH2O nanobelts act as template. By coating the nanobelts with a layer of polymerized C species under hydrothermal conditions followed by a calcination treatment at elevated temperature in an inert atmosphere, the V2O3@carbon nanocomposite was finally obtained. This nanocomposite consists of a well-graphitized carbon layer encapsulating the V2O3 nanostructures. The as-synthesized V2O3@carbon nanocomposite exhibits improved electrochemical performance in Li-ion batteries as the anode, showing enhanced stability, reversibility and cyclability in long-term cycles. At least a 98.5% capacity retention (660 mAh g−1) was observed after high-rate galvanostatic measurements (250 cycles). These results indicate that the V2O3@carbon nanocomposite is a promising candidate as an anode material for next generation Li-ion batteries. In addition, this nanocomposite may also be a promising material for other important applications such as supercapacitors.

Graphical abstract: Improved cyclability of lithium-ion battery anode using encapsulated V2O3 nanostructures in well-graphitized carbon fiber

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Publication details

The article was received on 14 Mar 2012, accepted on 19 Apr 2012 and first published on 20 Apr 2012


Article type: Paper
DOI: 10.1039/C2RA20472J
Citation: RSC Adv., 2012,2, 5748-5753
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    Improved cyclability of lithium-ion battery anode using encapsulated V2O3 nanostructures in well-graphitized carbon fiber

    Y. Wang, H. J. Zhang, A. S. Admar, J. Luo, C. C. Wong, A. Borgna and J. Lin, RSC Adv., 2012, 2, 5748
    DOI: 10.1039/C2RA20472J

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