Process for producing an activated oxygen gas sensor element

Details Process for producing an activated oxygen gas sensor element Process for producing an activated oxygen gas sensor element

1978-09-13

1979-10-02

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

134 41, 252472, C23G 102, G01N 2758

Patent

active

041697774

ABSTRACT:
An activated oxygen gas sensor element having an increased voltage output under rich gas conditions, short switching response and reduced internal resistance is produced by chemically treating the inner conductive catalyst electrode of the sensor element with an inorganic acid or acid salt and current activating the outer conductive catalyst electrode by applying a direct current to the sensor element, with the outer electrode as an anode, while the outer electrode is at an elevated temperature and in the presence of a nonoxidizing atmosphere.

REFERENCES:
patent: 4136000 (1979-01-01), Davis et al.

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