Hydrogen detection using membrane-type surface stress sensor

Taro Yakabe; Gaku Imamura; Genki Yoshikawa; Masahiro Kitajima; Akiko N Itakura

doi:10.1088/2399-6528/ab7319

論文 Hydrogen detection using membrane-type surface stress sensor

Taro Yakabe (National Institute for Materials Science) ; Gaku Imamura (National Institute for Materials Science) ; Genki Yoshikawa (National Institute for Materials Science) ; Masahiro Kitajima (National Institute for Materials Science) ; Akiko N Itakura (National Institute for Materials Science)

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引用

Taro Yakabe, Gaku Imamura, Genki Yoshikawa, Masahiro Kitajima, Akiko N Itakura. Hydrogen detection using membrane-type surface stress sensor. Journal of Physics Communications. 2020, 4 (2), 25005-25005. https://doi.org/10.1088/2399-6528/ab7319

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(abstract)

This study shows a possibility of the application of a membrane-type surface stress sensor (MSS) with a Pd film to a hydrogen sensor. It was able to detect hydrogen concentrations from 5 to 40000 ppm in a nitrogen gas mixture. In the case of a conventional sensor using a hydrogen-occluding material, it is necessary to wait for a state of saturation. In contrast, the proposed method can detect hydrogen quickly by the initial rate of hydrogen absorption. The relationship between the initial absorption rate and hydrogen concentration is explained by considering the two-step reaction kinetics of hydrogen absorption into bulk Pd via Langmuir dissociative adsorption on surface.

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