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:
-
- Sante Fe, NM
- 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
- 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.
Garzon, Fernando H, Chung, Brandon W, Raistrick, Ian D, & Brosha, Eric L. Solid state oxygen sensor. United States.
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.
@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}
}
Works referenced in this record:
Tetragonal zirconia polycrystals — a high performance solid oxygen ion conductor
journal, May 1992
- Weppner, W.
- Solid State Ionics, Vol. 52, Issue 1-3