Study of YSZ-based electrochemical sensors with WO3 electrodes in NO2 and CO environments

Atanu Dutta*, Narin Kaabbuathong, Maria Luisa Grilli, Elisabetta Di Bartolomeo, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

Electrochemical sensors based on yttria-stabilized zirconia (YSZ) with WO3 as a sensing electrode were fabricated using either Pt or Au electrodes. The sensors were studied in the temperature range 500-700°C in the presence of different concentrations (300-1000 ppm) of NO2 and CO in air. The response to NO2 was very stable with fast response time (within 20 s). The best sensitivity was observed at 600 and 650°C using Pt and Au electrodes, respectively. At all temperatures investigated a cross sensitivity to CO gas was also noticed. The response to CO was decreased using Au electrodes. The role played by WO3 as a sensing electrode was investigated.

Original languageEnglish (US)
JournalJournal of the Electrochemical Society
Volume150
Issue number2
DOIs
StatePublished - Feb 1 2003

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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