Response characteristics of YSZ oxygen sensor with a Ag·YSZ composite thin film electrode

T. Usami, N. Akao, N. Hara, K. Sugimoto

Research output: Contribution to journalArticle

Abstract

An oxygen sensor with a Ag·YSZ (ZrO2-8 mol%Y2O3) composite thin film electrode deposited on a YSZ disk by ion-beam-sputtering (IBS) was developed. Compositions of the thin films tested were Ag-10 mol%YSZ and Ag-30 mol%YSZ. The performance of the oxygen sensors was examined at temperatures between 573 and 673 K. The mechanism of electrode reactions was inferred on the basis of the results obtained by an AC impedance method. The oxygen sensor with the Ag.YSZ composite thin film electrodes showed the Nernstian response in 1.0% oxygen at temperatures higher than 593 K. The lowest temperature for the Nernstian response was lower by 25 K than that reported for the sensor with a Ag thin film electrode. After a change in oxygen concentration, the response time of the sensor with the Ag-10 mol%YSZ electrode was shorter than that with the Ag-30 mol%YSZ electrode.

Original languageEnglish
Pages (from-to)916-921
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume65
Issue number10
DOIs
Publication statusPublished - 2001 Jan 1

Keywords

  • Ag·YSZ composite thin film
  • Ion-beam-sputter deposition
  • Nernstian response
  • Oyxgen sensor
  • Response time
  • Yttria stabilized zirconia

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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