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Layered titanate thin film as an electrode material

Published online by Cambridge University Press:  03 March 2011

Akio Ishikawa
Affiliation:
Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan
Tsuyoshi Takata
Affiliation:
Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan
Junko N. Kondo
Affiliation:
Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan
Michikazu Hara
Affiliation:
Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan
Yasumichi Matsumoto
Affiliation:
Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-0862, Japan
Kazunari Domen*
Affiliation:
Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan; and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Co. (JST), 2-1-13 Higashiueno, Taito-ku, Tokyo 110-0015, Japan
*
a)Address all correspondence to this author. e-mail: kdomen@res.titech.ac.jp
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Abstract

A thin film composed of an ion-exchangeable layered oxide HxTi(2-x/4)x/4O4 (HTiO) (where the open square, ⃞, is vacancy) is studied as an electrode material. The thin film prepared on an indium tin oxide substrate functions as an electrode for the redox reaction of Ru(bpy)32+/Ru(bpy)33+ without noticeable degradation. Lack of reaction in the presence of Fe(CN)64−/Fe(CN)63− indicates that reaction on this electrode occurs in the interlayers between titanate sheets. A Ru(bpy)32+-intercalated form of the electrode generates photocurrent under visible light irradiation.

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Articles
Copyright
Copyright © Materials Research Society 2004

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References

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