Catalytic combustion-type hydrogen sensor using BaTiO 3-based PTC thermistor

Masayoshi Yuasa, Takahito Nagano, Naoki Tachibana, Tetsuya Kida, Kengo Shimanoe

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A catalytic combustion-type gas sensor using a positive temperature coefficient (PTC) thermistor, which shows a sharp resistance change around Curie temperature, was developed for the detection of hydrogen. La-doped BaTiO 3 (Ba0.998 La0.002 TiO3) was prepared through a solid-state method and an oxalic acid method. La-doped BaTiO3 obtained by the oxalic acid method showed improved PTC properties, due to the formation of fine particles, as compared to that prepared with the solid-state method. The resulting sensor device showed a fairly high H2 sensitivity in the range of 100-1000 ppm. In addition, the H 2 sensitivity and response speed were improved by coating a Pt/SiO2 catalyst on the sensor device because the catalytic combustion efficiency of H2 was improved by the catalyst coating.

Original languageEnglish
Pages (from-to)1789-1794
Number of pages6
JournalJournal of the American Ceramic Society
Volume96
Issue number6
DOIs
Publication statusPublished - Jun 1 2013

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Positive temperature coefficient
Oxalic Acid
Thermistors
Oxalic acid
Hydrogen
combustion
hydrogen
sensor
Coatings
Catalysts
oxalic acid
Sensors
Curie temperature
Chemical sensors
coating
temperature
catalyst
method
gas
solid state

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Catalytic combustion-type hydrogen sensor using BaTiO 3-based PTC thermistor. / Yuasa, Masayoshi; Nagano, Takahito; Tachibana, Naoki; Kida, Tetsuya; Shimanoe, Kengo.

In: Journal of the American Ceramic Society, Vol. 96, No. 6, 01.06.2013, p. 1789-1794.

Research output: Contribution to journalArticle

Yuasa, Masayoshi ; Nagano, Takahito ; Tachibana, Naoki ; Kida, Tetsuya ; Shimanoe, Kengo. / Catalytic combustion-type hydrogen sensor using BaTiO 3-based PTC thermistor. In: Journal of the American Ceramic Society. 2013 ; Vol. 96, No. 6. pp. 1789-1794.
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