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Growth and Electrochemical Properties of V2O5 Nanotube Arrays

Published online by Cambridge University Press:  15 February 2011

Ying Wang ,
Katsunori Takahashi ,
Huamei Shang ,
Kyoungho Lee  and
Guozhong Cao
Ying Wang
Affiliation:
Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
Katsunori Takahashi
Affiliation:
Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA Steel Research Laboratory, JFE Steel Corporation, Japan
Huamei Shang
Affiliation:
Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
Kyoungho Lee
Affiliation:
Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA Division of Materials and Chemical Engineering, Soonchunhyang University, Korea
Guozhong Cao
Affiliation:
Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
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Abstract

Nanotube arrays of amorphous vanadium pentoxide (V2O5) were synthesized through the template-based electrodeposition and its electrochemical properties were investigated for Li-ion intercalation applications. The nanotubes have a length of 10 μm, outer-diameter of 200 nm and inner-diameter of 100 nm. Electrochemical analyses demonstrate that the V2O5 nanotube array delivers a high initial capacity of 300 mAh/g, about twice that of the electrochemically-prepared V2O5 film. Although the V2O5 nanotube array shows a more drastic degradation than the film under electrochemical redox cycles, the nanotube array reaches a stabilized capacity of 160 mAh/g which remains about 1.3 times the stabilized capacity of the film.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 879: Symposium Z – Chemistry of Nanomaterial Synthesis and Processing , 2005 , Z7.8
Copyright
Copyright © Materials Research Society 2005

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