A Stable Solid-Reference Electrode of BiCuVOx/Perovskite-Oxide for Potentiometric Solid Electrolyte CO2 Sensor
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- KISHI Shotaro
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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- YUASA Masayoshi
- Faculty of Engineering Sciences, Kyushu University
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- KIDA Tetsuya
- Faculty of Engineering Sciences, Kyushu University
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- LANTTO Vilho Eelis
- Microelectronics and Materials Physics Laboratories, University of Oulu
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- SHIMANOE Kengo
- Faculty of Engineering Sciences, Kyushu University
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- YAMAZOE Noboru
- Faculty of Engineering Sciences, Kyushu University
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Abstract
A laminated solid-reference electrode of BiCuVOx (Bi2Cu0.1V0.9O5.35)/perovskite-oxide (La0.6Sr0.4Co0.78Ni0.02Fe0.2O3) was developed for a NASICON (Na3Zr2Si2PO12; Na+ conductor)-based potentiometric CO2 sensor. The fabricated electrochemical cell expressed as, CO2, O2/Au (sensing electrode)/Li2CO3-BaCO3 (auxiliary phase)/NASICON/BiCuVOx/BiCuVOx-perovskite-oxide (reference electrode)/O2, responded well to changes in CO2 concentration (100-400 ppm) at 450°C under high humid conditions (88%RH). The potential of the developed reference electrode was stable and exhibited little interference by water vapor. Furthermore, the reference electrode potential did not response to CO2 even after the BiCuVOx layer was contaminated with carbonate, indicating a good stability of BiCuVOx against CO2. The sensor device attached with the laminated solid-reference electrode showed a good warming-up characteristic, i.e., the electromotive force (EMF) of the device reached a steady and constant value when the sensor operation is re-started even after the sensor was exposed to humid air containing CO2 at room temperature.<br>
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 115 (1347), 706-711, 2007
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680260337024
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- NII Article ID
- 110006438672
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 9312183
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed