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Title: Solid state oxygen sensor

Solid state oxygen sensors are provided with a yttria-doped zirconia as an electrolyte and use the electrochemical oxygen pumping of the zirconia electrolyte. A linear relationship between oxygen concentration and the voltage arising at a current plateau occurs when oxygen accessing the electrolyte is limited by a diffusion barrier. A diffusion barrier is formed herein with a mixed electronic and oxygen ion-conducting membrane of lanthanum-containing perovskite or zirconia-containing fluorite. A heater may be used to maintain an adequate oxygen diffusion coefficient in the mixed conducting layer. 4 figs.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
288034
Assignee:
Univ. of California, Alameda, CA (United States) PTO; SCA: 440800; PA: EDB-96:136969; SN: 96001636048
Patent Number(s):
US 5,543,025/A/
Application Number:
PAN: 8-381,609
Contract Number:
W-7405-ENG-36
Resource Relation:
Other Information: PBD: 6 Aug 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; OXYGEN METERS; DESIGN; YTTRIUM OXIDES; DOPED MATERIALS; ZIRCONIUM OXIDES; MEASURING METHODS; ECOLOGICAL CONCENTRATION; ELECTRIC POTENTIAL