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

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

doi:10.1111/jace.12217

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

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

Functional Materials Science

Research output: Contribution to journal › Article › peer-review

15 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 (Ba_0.998 La_0.002 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 language	English
Pages (from-to)	1789-1794
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	96
Issue number	6
DOIs	https://doi.org/10.1111/jace.12217
Publication status	Published - Jun 2013

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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title = "Catalytic combustion-type hydrogen sensor using BaTiO 3-based PTC thermistor",

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.",

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AU - Yuasa, Masayoshi

AU - Nagano, Takahito

AU - Tachibana, Naoki

AU - Kida, Tetsuya

AU - Shimanoe, Kengo

PY - 2013/6

Y1 - 2013/6

N2 - 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.

AB - 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.

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

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