One-step preparation and electrochemical properties of accordion-like VO2 nanowire arrays

Zhao Shiyong; Han Chunhua; Mai Liqiang; Zhao Yunlong; Fang Ruopian; Han Jiuhui

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One-step preparation and electrochemical properties of accordion-like VO2 nanowire arrays

Zhao Shiyong,Han Chunhua,Mai Liqiang *,Zhao Yunlong,Fang Ruopian,Han Jiuhui

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

*Correspondence author

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Funding: National Nature Science Foundation of China （No.50702039, 51072153), the Research Fund for the Doctoral Program of Higher Education）

Opened online:18 October 2010

Accepted by: none

Citation: Zhao Shiyong,Han Chunhua,Mai Liqiang.One-step preparation and electrochemical properties of accordion-like VO2 nanowire arrays[OL]. [18 October 2010] http://en.paper.edu.cn/en_releasepaper/content/4388605

Accordion-like VO2 nanowire arrays were synthesized using V2O5 power as the precursor and cetyltrimethyl ammonium bromide (CTAB) as structure-directing templates by one-step rheological phase reaction followed by self-assembling process. Characterizations of the samples were carried out by XRD, SEM, the results show nanowire arrays were approximately cubic structure with the length of 10μm and the width and height of 5μm. The nanowire arrays were constructed from single nanowires of diameter around 100-160nm and length around 2~3μm. Cyclic voltammetry and galvanostatic charge-discharge indicates that the initial charge and discharge capacity of the accordion-like nanowire arrays cathodes are up to 262mAh/g and 288mAh/g respectively , much higher than the capacity of the counterpart with the disordered structure.

Keywords:Materials Physics and Chemistry;VO2;accordion-like nanowire array;self-assembly;one-step preparation;electrochemical properties

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