Planar NASICON-based CO2 sensor using BiCuVOx /Perovskite-type oxide as a solid-reference electrode

Tetsuya Kida, Shotaro Kishi, Masayoshi Yuasa, Kengo Shimanoe, Noboru Yamazoe

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

To improve the stability of a NASICON (Na3 Zr2 Si2 PO12; Na+ conductor)-based potentiometric CO2 sensor under humid conditions, a composite of BiCuVOx (Bi2 Cu0.1 V0.9 O5.35) and perovskite-type oxide (La0.6 Sr0.4 Co0.78 Ni0.02 Fe0.2 O3) was used as a solid-reference electrode. The CO2 sensing properties and stability of a NASICON-based planar device fitted with Li2 CO3 - BaCO3 (auxiliary phase) and the composite reference electrode were examined under humid conditions. The planar device mounted on an alumina substrate with a Pt heater showed stable electromotive force (emf) responses to changes in the CO2 concentration (100-400 ppm) at 400 and 450°C in humid air without degradation. The sensor device also exhibited a good warming-up characteristic, i.e., the emf of the device quickly reached a steady and constant value when the sensor operation was restarted even after the sensor was exposed to humid air (86% relative humidity at 25°C) at room temperature for a long time.

Original languageEnglish
Pages (from-to)J117-J121
JournalJournal of the Electrochemical Society
Volume155
Issue number5
DOIs
Publication statusPublished - Apr 14 2008

Fingerprint

Perovskite
Oxides
Electromotive force
Electrodes
electrodes
electromotive forces
oxides
sensors
Sensors
Potentiometric sensors
Aluminum Oxide
Composite materials
Air
composite materials
air
Atmospheric humidity
Alumina
heaters
humidity
Degradation

All Science Journal Classification (ASJC) codes

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

Cite this

Planar NASICON-based CO2 sensor using BiCuVOx /Perovskite-type oxide as a solid-reference electrode. / Kida, Tetsuya; Kishi, Shotaro; Yuasa, Masayoshi; Shimanoe, Kengo; Yamazoe, Noboru.

In: Journal of the Electrochemical Society, Vol. 155, No. 5, 14.04.2008, p. J117-J121.

Research output: Contribution to journalArticle

Kida, Tetsuya ; Kishi, Shotaro ; Yuasa, Masayoshi ; Shimanoe, Kengo ; Yamazoe, Noboru. / Planar NASICON-based CO2 sensor using BiCuVOx /Perovskite-type oxide as a solid-reference electrode. In: Journal of the Electrochemical Society. 2008 ; Vol. 155, No. 5. pp. J117-J121.
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