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Copper-Conducting Nasicon-Type CuTi2(PO4)3 Glass-Ceramics for Application to a Novel O2 Sensor

Published online by Cambridge University Press:  15 February 2011

K. Yamamoto ,
T. Kasuga  and
M. NOGAMI
K. Yamamoto
Affiliation:
Department of Materials Science and Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japankyamamot@nmse.nitech.ac.jp
T. Kasuga
Affiliation:
Department of Materials Science and Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
M. NOGAMI
Affiliation:
Department of Materials Science and Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japannogami@mse.nitech.ac.jp
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Abstract

Fast Cu+-conducting ceramics containing NASICON-type CuTi2(PO4)3 and Cu3 (PO4)2 phases, which three-dimensionally interlock with each other, has been successfully prepared by the controlled crystallization of glass in the Cu-Ti-P-O system. The electrical conductivity of the glass-ceramic was ∼3×10−4Scm−1 at 300°C. The obtained glass-ceramics was applied to an oxygen-concentration cell operating at low temperature such as 100°C. The electromotive force (EMF) of the sensor showed good Nemstian response. The mechanism for O2 sensing is discussed in terms of the redox reaction between Cu+ ion in the dense glass-ceramic and O2 gas.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 548: Symposia EE – Solid State Ionics V , 1998 , 641
Copyright
Copyright © Materials Research Society 1999

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References

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