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Issue 39, 2013
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Supercritically exfoliated ultrathin vanadium pentoxide nanosheets with high rate capability for lithium batteries

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Abstract

Ultrathin V2O5 nanosheets were successfully prepared through supercritical solvothermal reaction followed by annealing treatment. The formation of ultrathin nanosheets is owing to Ostwald ripening and the effect of supercritical fluids. As cathode material for lithium batteries, the ultrathin V2O5 nanosheets exhibit a capacity of 108 mA h g−1 at a high rate of up to 10 C at 2.4–4 V and excellent cyclability with little capacity loss after 200 cycles. The enhanced rate performance is attributed to the shortened diffusion distance and the increased electrode–electrolyte contact area of the ultrathin nanosheet structure. It is also demonstrated that the supercritical solvothermal method is effective and facile to scalably synthesize ultrathin nanomaterials for lithium batteries.

Graphical abstract: Supercritically exfoliated ultrathin vanadium pentoxide nanosheets with high rate capability for lithium batteries

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Publication details

The article was received on 24 Jun 2013, accepted on 31 Jul 2013 and first published on 31 Jul 2013


Article type: Paper
DOI: 10.1039/C3CP52624K
Citation: Phys. Chem. Chem. Phys., 2013,15, 16828-16833
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    Supercritically exfoliated ultrathin vanadium pentoxide nanosheets with high rate capability for lithium batteries

    Q. An, Q. Wei, L. Mai, J. Fei, X. Xu, Y. Zhao, M. Yan, P. Zhang and S. Huang, Phys. Chem. Chem. Phys., 2013, 15, 16828
    DOI: 10.1039/C3CP52624K

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