WO2002050508A3 - Coating for gas sensors - Google Patents

Coating for gas sensors Download PDF

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Publication number
WO2002050508A3
WO2002050508A3 PCT/US2001/049121 US0149121W WO0250508A3 WO 2002050508 A3 WO2002050508 A3 WO 2002050508A3 US 0149121 W US0149121 W US 0149121W WO 0250508 A3 WO0250508 A3 WO 0250508A3
Authority
WO
WIPO (PCT)
Prior art keywords
coating
protective layer
gas sensors
reference electrode
sensing electrode
Prior art date
Application number
PCT/US2001/049121
Other languages
French (fr)
Other versions
WO2002050508A2 (en
Inventor
Eric P Clyde
Richard F Beckmeyer
William J Labarge
Marsha E Nottingham
Original Assignee
Delphi Tech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Tech Inc filed Critical Delphi Tech Inc
Priority to EP01987439A priority Critical patent/EP1347838A4/en
Publication of WO2002050508A2 publication Critical patent/WO2002050508A2/en
Publication of WO2002050508A3 publication Critical patent/WO2002050508A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • G01N27/4077—Means for protecting the electrolyte or the electrodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

A method for making a sensor is disclosed comprising using a sensing electrode (20) having a first and second side. Using a reference electrode (22) having a first and second side and a second electrical lead in electrical communication with the reference electrode (22). Disposing an electrolyte (30) between the first side of sensing electrode (20) and the first side of reference electrode (22). Disposing a first side of a protective layer (32) adjacent to the side of sensing electrode (20). Mixing a metal oxide, a fugitive material, and a solvent to form a mixture. Applying the mixture to a second side of the protective layer (32) and calcining the sensor to form the protective coating (31) on the protective layer (32) second side.
PCT/US2001/049121 2000-12-18 2001-12-18 Coating for gas sensors WO2002050508A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01987439A EP1347838A4 (en) 2000-12-18 2001-12-18 Coating for gas sensors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/216,123 1998-12-18
US21612300A 2000-12-18 2000-12-18

Publications (2)

Publication Number Publication Date
WO2002050508A2 WO2002050508A2 (en) 2002-06-27
WO2002050508A3 true WO2002050508A3 (en) 2002-08-22

Family

ID=22805790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/049121 WO2002050508A2 (en) 2000-12-18 2001-12-18 Coating for gas sensors

Country Status (2)

Country Link
EP (1) EP1347838A4 (en)
WO (1) WO2002050508A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326597A (en) * 1989-02-14 1994-07-05 Ngk Spark Plug Co., Ltd. Method of producing oxygen sensor for air-fuel ratio control having a protective layer including oxygen storage material
US6015517A (en) * 1998-04-08 2000-01-18 International Business Machines Corporation Controlled porosity for ceramic contact sheets and setter tiles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177112A (en) * 1978-03-27 1979-12-04 Nippondenso Co., Ltd. Oxygen concentration detector and method of use thereof
DE2852647C2 (en) * 1978-12-06 1986-04-30 Robert Bosch Gmbh, 7000 Stuttgart Process for the production of a layer system on solid electrolytes for electrochemical applications
US5762737A (en) * 1996-09-25 1998-06-09 General Motors Corporation Porous ceramic and process thereof
EP1269176A2 (en) * 2000-03-28 2003-01-02 Delphi Technologies, Inc. High temperature poison resistant sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326597A (en) * 1989-02-14 1994-07-05 Ngk Spark Plug Co., Ltd. Method of producing oxygen sensor for air-fuel ratio control having a protective layer including oxygen storage material
US6015517A (en) * 1998-04-08 2000-01-18 International Business Machines Corporation Controlled porosity for ceramic contact sheets and setter tiles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1347838A4 *

Also Published As

Publication number Publication date
EP1347838A4 (en) 2007-12-19
EP1347838A2 (en) 2003-10-01
WO2002050508A2 (en) 2002-06-27

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