Oxygen-sensor element

Details Oxygen-sensor element Oxygen-sensor element

1992-12-22

1995-08-22

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204426, 204427, 4271263, G01N 27417

Patent

active

054437113

ABSTRACT:
Oxygen-sensor element comprises reference-gas-side and detection-gas-side electrodes on both surfaces of a solid-electrolyte body, and a porous protective layer on the surface of the detection-gas-side electrode, wherein at least a part (including at least a surface layer) of said porous protective layer is formed by a granular texture of a grain size of 0.1 to 0.5 .mu.m formed mainly of a nonstoichiometric compound of a transition metal oxide (TiO.sub.x), and a catalyst for having gas components of the gas to be measured react is carried in at least a part (including at least a surface layer) of the porous protective layer. Oxidation reaction of gas components is improved to prevent deterioration of the responsive property.

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