CO sensing mechanism with chemical potential shifting on Au/YSZ interface

Keiji Yashiro; Masakazu Kudo; Hiroki Matsumoto; Atsushi Kaimai; Yutaka Nigara; Tatsuya Kawada; Junichiro Mizusaki; Kenichi Kawamura

doi:10.2497/jjspm.47.1026

CO sensing mechanism with chemical potential shifting on Au/YSZ interface

Keiji Yashiro, Masakazu Kudo, Hiroki Matsumoto, Atsushi Kaimai, Yutaka Nigara, Tatsuya Kawada, Junichiro Mizusaki, Kenichi Kawamura

ENV - Environmental Studies for Advanced Society

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

1 Citation (Scopus)

Abstract

The electrochemical property of the galvanic cell, P(O₂)^I+P(CO), Au/YSZ/Pt, P(O₂)^II, has been studied for the applications of CO sensor. In order to elucidate the CO-sensing mechanism on Au/YSZ interface, steady state polarization measurements were carried out at 873-1073 K in O₂-Ar, CO-CO₂, CO-O₂-Ar systems. The quantitative analysis of the I-V characteristics revealed the kinetics of the electrode reaction with O₂, CO and CO₂. The current density at Au/YSZ interface in CO-O₂-Ar system can be formulated. As a result, it was confirmed that mixed potential was generated by a small amount of CO in oxygen-containing streams.

Original language	English
Pages (from-to)	1026-1031
Number of pages	6
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	47
Issue number	9
DOIs	https://doi.org/10.2497/jjspm.47.1026
Publication status	Published - 2000 Sept

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title = "CO sensing mechanism with chemical potential shifting on Au/YSZ interface",

abstract = "The electrochemical property of the galvanic cell, P(O2)I+P(CO), Au/YSZ/Pt, P(O2)II, has been studied for the applications of CO sensor. In order to elucidate the CO-sensing mechanism on Au/YSZ interface, steady state polarization measurements were carried out at 873-1073 K in O2-Ar, CO-CO2, CO-O2-Ar systems. The quantitative analysis of the I-V characteristics revealed the kinetics of the electrode reaction with O2, CO and CO2. The current density at Au/YSZ interface in CO-O2-Ar system can be formulated. As a result, it was confirmed that mixed potential was generated by a small amount of CO in oxygen-containing streams.",

author = "Keiji Yashiro and Masakazu Kudo and Hiroki Matsumoto and Atsushi Kaimai and Yutaka Nigara and Tatsuya Kawada and Junichiro Mizusaki and Kenichi Kawamura",

year = "2000",

month = sep,

doi = "10.2497/jjspm.47.1026",

language = "English",

volume = "47",

pages = "1026--1031",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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TY - JOUR

T1 - CO sensing mechanism with chemical potential shifting on Au/YSZ interface

AU - Yashiro, Keiji

AU - Kudo, Masakazu

AU - Matsumoto, Hiroki

AU - Kaimai, Atsushi

AU - Nigara, Yutaka

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

AU - Kawamura, Kenichi

PY - 2000/9

Y1 - 2000/9

N2 - The electrochemical property of the galvanic cell, P(O2)I+P(CO), Au/YSZ/Pt, P(O2)II, has been studied for the applications of CO sensor. In order to elucidate the CO-sensing mechanism on Au/YSZ interface, steady state polarization measurements were carried out at 873-1073 K in O2-Ar, CO-CO2, CO-O2-Ar systems. The quantitative analysis of the I-V characteristics revealed the kinetics of the electrode reaction with O2, CO and CO2. The current density at Au/YSZ interface in CO-O2-Ar system can be formulated. As a result, it was confirmed that mixed potential was generated by a small amount of CO in oxygen-containing streams.

AB - The electrochemical property of the galvanic cell, P(O2)I+P(CO), Au/YSZ/Pt, P(O2)II, has been studied for the applications of CO sensor. In order to elucidate the CO-sensing mechanism on Au/YSZ interface, steady state polarization measurements were carried out at 873-1073 K in O2-Ar, CO-CO2, CO-O2-Ar systems. The quantitative analysis of the I-V characteristics revealed the kinetics of the electrode reaction with O2, CO and CO2. The current density at Au/YSZ interface in CO-O2-Ar system can be formulated. As a result, it was confirmed that mixed potential was generated by a small amount of CO in oxygen-containing streams.

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JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

IS - 9

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CO sensing mechanism with chemical potential shifting on Au/YSZ interface

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