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

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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.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan

    K. Yamamoto, T. Kasuga & M. Nogami

Authors
  1. K. Yamamoto
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  2. T. Kasuga
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  3. M. Nogami
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Correspondence to K. Yamamoto.

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Yamamoto, K., Kasuga, T. & Nogami, M. Copper-Conducting Nasicon-Type CuTi2(PO4)3 Glass-Ceramics for Application to a Novel O2 Sensor. MRS Online Proceedings Library 548, 641–646 (1998). https://doi.org/10.1557/PROC-548-641

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  • DOI: https://doi.org/10.1557/PROC-548-641

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