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Title:
GAS SENSOR AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2016/098844
Kind Code:
A1
Abstract:
Provided are a gas sensor in which the accuracy of measurement of a specific gas is hard to impair even when a pump electrode is heated, and a method for producing the gas sensor. A measured gas chamber 11, a reference gas chamber 12, a solid electrolyte 2, a pump electrode 3, a sensor electrode 5, a reference electrode 6, and a heater 7 are included. The pump electrode 3 contains Pt, Au, and an aggregate 31. After production of the gas sensor 1, the pump electrode 3 has a porosity of not more than 5.2 vol%, a surface roughness Ra of 0.5 to 9.1 μm, and the content of the aggregate 31 of not less than 4.9 vol% in a state where the pump electrode 3 has not yet been heated to an activation temperature of the solid electrolyte 2.

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Inventors:
SUGIURA KEI (JP)
Application Number:
PCT/JP2015/085321
Publication Date:
June 23, 2016
Filing Date:
December 17, 2015
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
G01N27/416
Foreign References:
JP2000321238A2000-11-24
JPH09113484A1997-05-02
JP2009244117A2009-10-22
JP2002174620A2002-06-21
Attorney, Agent or Firm:
KIKUCHI, YASUHIRO (JP)
Yasuhiro Kikuchi (JP)
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