Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1995-01-30
1996-08-06
Bell, Bruce F.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204421, 204424, 204425, 204431, 204415, G01N 2726
Patent
active
055430252
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.
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Brosha Eric L.
Chung Brandon W.
Garzon Fernando H.
Raistrick Ian D.
Bell Bruce F.
The Regents of the University of California, Office of Technolog
Wilson Ray G.
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