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Solid state oxygen sensor

United States Patent

5,695,624
December 9, 1997
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Sulfur Resistant Electrodes for Zirconia Oxygen Sensors
Solid State Gas Sensors
A potentiometric oxygen sensor is formed having a logarithmic response to a differential oxygen concentration while operating as a Nernstian-type sensor. Very thin films of mixed conducting oxide materials form electrode services while permitting diffusional oxygen access to the interface between the zirconia electrolyte and the electrode. Diffusion of oxygen through the mixed oxide is not rate-limiting. Metal electrodes are not used so that morphological changes in the electrode structure do not occur during extended operation at elevated temperatures.
Garzon; Fernando H. (Santa Fe, NM), Brosha; Eric L. (Los Alamos, NM)
The Regents of the Univeristy of California (Alameda, CA)
08/ 687,900
July 29, 1996
This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.