发明名称 |
Hydrogen sensor |
摘要 |
<p>A hydrogen sensor includes a first electrode 3 and a second electrode 4 provided in contact with a proton conduction layer 2; a gas diffusion controlling portion 6 provided between a measurement gas atmosphere and the first electrode 3; and a support element (1a, 1b) for supporting the proton conduction layer 6, the first electrode 3, the second electrode 4, and the gas diffusion controlling portion 6. Hydrogen contained in a measurement gas introduced via the gas diffusion-controlling portion 6 is dissociated, decomposed, or reacted by applying a voltage between the first electrode 3 and the second electrode 4 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 2 from the first electrode 3 side of the proton conduction layer to the second electrode 4 side of the proton conduction layer. Hydrogen concentration on the first electrode 2 is controlled to a partial pressure of not less than 10<-12> atm, or more preferably, of not less than 3 x 10<-12> atm and of less than 10<-2> atm. <IMAGE></p> |
申请公布号 |
EP1249701(A2) |
申请公布日期 |
2002.10.16 |
申请号 |
EP20020252622 |
申请日期 |
2002.04.12 |
申请人 |
NGK SPARK PLUG COMPANY LIMITED |
发明人 |
NADANAMI, NORIHIKO;KONDO, TOMONORI;WATANABE, MASAYA;INOUE, RYUJI;ISHIDA, NOBORU;OSHIMA, TAKAFUMI |
分类号 |
G01N27/406;G01N27/407;G01N27/416;G01N33/00;H01M8/04;(IPC1-7):G01N33/00 |
主分类号 |
G01N27/406 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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