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Title: Method of detecting oxygen partial pressure and oxygen partial pressure sensor

Abstract

This invention is comprised of a method for detecting oxygen partial pressure and an oxygen partial pressure sensor are provided. The method for measuring oxygen partial pressure includes contacting oxygen to a solid oxide electrolyte and measuring the subsequent change in electrical conductivity of the solid oxide electrolyte. A solid oxide electrolyte is utilized that contacts both a porous electrode and a nonporous electrode. The electrical conductivity of the solid oxide electrolyte is affected when oxygen from an exhaust stream permeates through the porous electrode to establish an equilibrium of oxygen anions in the electrolyte, thereby displacing electrons throughout the electrolyte to form an electron gradient. By adapting the two electrodes to sense a voltage potential between them, the change in electrolyte conductivity due to oxygen presence can be measured.

Inventors:
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
140163
Patent Number(s):
PATENTS-US-A7774922
Application Number:
ON: DE94003043; PAN: 7-774,922
Assignee:
Dept. of Energy
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent Application
Resource Relation:
Other Information: PBD: 1991
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; OXYGEN METERS; DESIGN; INVENTIONS; QUANTITATIVE CHEMICAL ANALYSIS; INTERNAL COMBUSTION ENGINES; SOLID ELECTROLYTES; EXHAUST GASES; FEEDBACK

Citation Formats

Dees, D W. Method of detecting oxygen partial pressure and oxygen partial pressure sensor. United States: N. p., 1991. Web.
Dees, D W. Method of detecting oxygen partial pressure and oxygen partial pressure sensor. United States.
Dees, D W. 1991. "Method of detecting oxygen partial pressure and oxygen partial pressure sensor". United States. https://www.osti.gov/servlets/purl/140163.
@article{osti_140163,
title = {Method of detecting oxygen partial pressure and oxygen partial pressure sensor},
author = {Dees, D W},
abstractNote = {This invention is comprised of a method for detecting oxygen partial pressure and an oxygen partial pressure sensor are provided. The method for measuring oxygen partial pressure includes contacting oxygen to a solid oxide electrolyte and measuring the subsequent change in electrical conductivity of the solid oxide electrolyte. A solid oxide electrolyte is utilized that contacts both a porous electrode and a nonporous electrode. The electrical conductivity of the solid oxide electrolyte is affected when oxygen from an exhaust stream permeates through the porous electrode to establish an equilibrium of oxygen anions in the electrolyte, thereby displacing electrons throughout the electrolyte to form an electron gradient. By adapting the two electrodes to sense a voltage potential between them, the change in electrolyte conductivity due to oxygen presence can be measured.},
doi = {},
url = {https://www.osti.gov/biblio/140163}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1991},
month = {Tue Dec 31 00:00:00 EST 1991}
}