Novel oxygen sensor based on a metal-metal oxide scale system

Ken Ich Kawamura; Atsushi Kaimai; Yutaka Nigara; Tatsuya Kawada; Junichiro Mizusaki

doi:10.1023/A:1009991331051

Novel oxygen sensor based on a metal-metal oxide scale system

Ken Ich Kawamura, Atsushi Kaimai, Yutaka Nigara, Tatsuya Kawada, Junichiro Mizusaki

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A novel oxygen sensor was proposed. The sensor, an electrochemical cell, was composed of a metal as reference electrode, its oxide scale as electrolyte and Pt or other adequate materials as sample electrode. It is expected that the electrolyte is self-restorative because it can be restored by high temperature oxidation. The emf measurements were carried out at 873 K in cells using zirconium. At P_O(2) = 1 to approximately 10^-3 atm, the emf vs. log P_O(2) plot lies on a straight line and its gradient is 2.303RT/4F, suggesting t_ion = 1 at the surface of the scale. The emf steeply decreases with decreasing P_O(2) at P_O(2)<10^-3 atm which can not be explained by the increase in the electronic conductivity and is explained by a gas laminar film phase at the surface of the sample electrode.

Original language	English
Pages (from-to)	151-156
Number of pages	6
Journal	Journal of Electroceramics
Volume	2
Issue number	3
DOIs	https://doi.org/10.1023/A:1009991331051
Publication status	Published - 1998

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Electrical and Electronic Engineering
Materials Chemistry

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title = "Novel oxygen sensor based on a metal-metal oxide scale system",

abstract = "A novel oxygen sensor was proposed. The sensor, an electrochemical cell, was composed of a metal as reference electrode, its oxide scale as electrolyte and Pt or other adequate materials as sample electrode. It is expected that the electrolyte is self-restorative because it can be restored by high temperature oxidation. The emf measurements were carried out at 873 K in cells using zirconium. At PO(2) = 1 to approximately 10-3 atm, the emf vs. log PO(2) plot lies on a straight line and its gradient is 2.303RT/4F, suggesting tion = 1 at the surface of the scale. The emf steeply decreases with decreasing PO(2) at PO(2)<10-3 atm which can not be explained by the increase in the electronic conductivity and is explained by a gas laminar film phase at the surface of the sample electrode.",

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T1 - Novel oxygen sensor based on a metal-metal oxide scale system

AU - Kawamura, Ken Ich

AU - Kaimai, Atsushi

AU - Nigara, Yutaka

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

PY - 1998

Y1 - 1998

N2 - A novel oxygen sensor was proposed. The sensor, an electrochemical cell, was composed of a metal as reference electrode, its oxide scale as electrolyte and Pt or other adequate materials as sample electrode. It is expected that the electrolyte is self-restorative because it can be restored by high temperature oxidation. The emf measurements were carried out at 873 K in cells using zirconium. At PO(2) = 1 to approximately 10-3 atm, the emf vs. log PO(2) plot lies on a straight line and its gradient is 2.303RT/4F, suggesting tion = 1 at the surface of the scale. The emf steeply decreases with decreasing PO(2) at PO(2)<10-3 atm which can not be explained by the increase in the electronic conductivity and is explained by a gas laminar film phase at the surface of the sample electrode.

AB - A novel oxygen sensor was proposed. The sensor, an electrochemical cell, was composed of a metal as reference electrode, its oxide scale as electrolyte and Pt or other adequate materials as sample electrode. It is expected that the electrolyte is self-restorative because it can be restored by high temperature oxidation. The emf measurements were carried out at 873 K in cells using zirconium. At PO(2) = 1 to approximately 10-3 atm, the emf vs. log PO(2) plot lies on a straight line and its gradient is 2.303RT/4F, suggesting tion = 1 at the surface of the scale. The emf steeply decreases with decreasing PO(2) at PO(2)<10-3 atm which can not be explained by the increase in the electronic conductivity and is explained by a gas laminar film phase at the surface of the sample electrode.

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Novel oxygen sensor based on a metal-metal oxide scale system

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