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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)1026-1031
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume47
Issue number9
DOIs
Publication statusPublished - 2000 Sep

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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