Preparation and Electrochemical Properties of VO2(B) Nano-Belts

Abstract:

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The VO2(B) nanobelts with monoclinic phase were synthesized by a hydrothermal method at 220°C for 48 h in the absence of any surfactants. The electron energy loss spectrum (EELS) demonstrates that vanadium exists only in the 4+ oxidation state. The SEM and TEM images reveal a belt-like structure of the VO2(B) with the length of several micrometers, the width of 140 nm and the thickness of around 20nm and growth along the [110] crystal direction. Cyclic voltammetry (CV) and galvanostatic charge/discharge demonstrate that VO2(B) nano-belts electrode exhibits desirable electrochemical properties and the specific capacitance reaches up to 632.6F•g-1.

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Periodical:

Edited by:

Ran Chen

Pages:

91-97

DOI:

10.4028/www.scientific.net/MSF.694.91

Citation:

Y. L. Qiao et al., "Preparation and Electrochemical Properties of VO2(B) Nano-Belts", Materials Science Forum, Vol. 694, pp. 91-97, 2011

Online since:

July 2011

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$35.00

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