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Planar potentiometric SO2 gas sensor for high temperatures using NASICON electrolyte combined with V2O5/WO3/TiO2 + Au or Pt electrode

Title data

Izu, Noriya ; Hagen, Gunter ; Schönauer-Kamin, Daniela ; Röder-Roith, Ulla ; Moos, Ralf:
Planar potentiometric SO2 gas sensor for high temperatures using NASICON electrolyte combined with V2O5/WO3/TiO2 + Au or Pt electrode.
In: Journal of the Ceramic Society of Japan. Vol. 119 (2011) . - pp. 687-691.
ISSN 0912-9200
DOI: https://doi.org/10.2109/jcersj2.119.687

Official URL: Volltext

Abstract in another language

For high temperature application, a planar SO2 sensor using NASICON as an electrolyte and V2O5/WO3/TiO2 + Au or Pt as a sensing electrode was fabricated and investigated. In the case of Pt electrodes, the sensor showed the strange response in temperature range from 300–600°C. In the case of Au electrodes, the sensor showed a strange behavior at 300 and 400°C, while at 600°C the sensor showed good response to SO2. The highest sensitivity with 80–83 mV/decade in the SO2 range from 20 to 200 ppm was observed at 600°C, although offset shifting was observed in repeated measurements. The sensors showed the potential for good selectivity at 600°C in the case of Au electrodes. The fact that the electric potential difference of the sensor is strongly affected by the electrode materials may intend that the mechanism of the sensor is a mixed potential type.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 19 Jan 2015 12:53
Last Modified: 13 Apr 2016 06:49
URI: https://eref.uni-bayreuth.de/id/eprint/5599