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Title
Japanese: 
English:Study on Pd membrane Electrode in Solid Electrolyte Hydrogen (Isotope) Sensor for Application to Liquid Blankets 
Author
Japanese: 大島 智子, 近藤 正聡, 田中 将裕, 室賀 健夫.  
English: Tomoko OSHIMA, Masatoshi KONDO, Masahiro TANAKA, Takeo MUROGA.  
Language English 
Journal/Book name
Japanese: 
English:Plasma and Fusion Research 
Volume, Number, Page Vol. 5        pp. 1-5
Published date Oct. 2, 2009 
Publisher
Japanese:プラズマ核融合学会 
English:The Japan Society of Plasma Science 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1585/pfr.5.S1034
Abstract On-line measurement of hydrogen isotopes in corrosive environments is essential for the development of liquid blanket systems for fusion reactors. In the present study, a Pd membrane electrode for a solid electrolyte hydrogen sensor was developed. An electrode fabricated onthe sensor surface was metallurgically analyzed and was found to be a compact layer with much lower porositythan conventional Pt electrodes. This compact elec-trode can serve as a protective layer against corrosion ofthe sensor material during measurement. The response and stability of the sensor with the Pd membrane electrode was investigated in an Ar-hydrogen gas mixture environment. The electromotive force of the sensor with the Pd compact electrode agreed with a theoretical calculation, assuming the same three-phase boundary as in the sensor with a porous Pt electrode.

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