G - Physics
01
N
G01N 27/70 (2006.01) G01N 15/06 (2006.01) G01N 27/407 (2006.01) G01N 33/00 (2006.01)
Patent
CA 2381400
A hydrogen sensor includes a first electrode and a second electrode provided in contact with a proton conduction layer; a gas diffusion controlling portion provided between a measurement gas atmosphere and the first electrode; and a support element for supporting the proton conduction layer, the first electrode, the second electrode, and the gas diffusion controlling portion. Hydrogen contained in a measurement gas introduced via the gas diffusion controlling portion is dissociated, decomposed, or reacted by applying a voltage between the first electrode and the second electrode to thereby generate protons. Hydrogen concentration is obtained on the basis of a limiting current generated as a result of the generated protons being pumped out via the proton conduction layer from the first electrode side of the proton conduction layer to the second electrode side of the proton conduction layer. Hydrogen concentration on the first electrode is controlled to a partial pressure of not less than 10 -12 atm, or more preferably, of not less than 3 × 10 -12 atm.
Inoue Ryuji
Ishida Noboru
Kondo Tomonori
Nadanami Norihiko
Oshima Takafumi
Gowling Lafleur Henderson Llp
Ngk Spark Plug Co. Ltd.
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