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Title: Solid state oxygen sensor

Abstract

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.

Inventors:
 [1];  [2];  [2];  [2]
+ Show Inventor Affiliations
  1. Sante Fe, NM
  2. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
OSTI Identifier:
870541
Patent Number(s):
5543025
Assignee:
Regents of University of California, Office of Technology (Alameda, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
solid; oxygen; sensor; sensors; provided; yttria-doped; zirconia; electrolyte; electrochemical; pumping; linear; relationship; concentration; voltage; arising; current; plateau; occurs; accessing; limited; diffusion; barrier; formed; mixed; electronic; ion-conducting; membrane; lanthanum-containing; perovskite; zirconia-containing; fluorite; heater; maintain; adequate; coefficient; conducting; layer; mixed conducting; diffusion coefficient; oxygen sensor; conducting layer; oxygen concentration; diffusion barrier; zirconia electrolyte; oxygen pump; oxygen ion-conducting; oxygen diffusion; chemical oxygen; oxygen sensors; conducting membrane; /204/

Citation Formats

Garzon, Fernando H, Chung, Brandon W, Raistrick, Ian D, and Brosha, Eric L. Solid state oxygen sensor. United States: N. p., 1996. Web.
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Garzon, Fernando H, Chung, Brandon W, Raistrick, Ian D, & Brosha, Eric L. Solid state oxygen sensor. United States.
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Garzon, Fernando H, Chung, Brandon W, Raistrick, Ian D, and Brosha, Eric L. Mon . "Solid state oxygen sensor". United States. https://www.osti.gov/servlets/purl/870541.
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@article{osti_870541,
title = {Solid state oxygen sensor},
author = {Garzon, Fernando H and Chung, Brandon W and Raistrick, Ian D and Brosha, Eric L},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1996},
month = {Mon Jan 01 00:00:00 EST 1996}
}
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