Methods of making gas sensors and sensors formed therefrom

Details Methods of making gas sensors and sensors formed therefrom Methods of making gas sensors and sensors formed therefrom

2007-07-17

2007-07-17

Olsen, Kaj K. (Department: 1753)

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

C134S029000, C204S402000, C204S429000

Reexamination Certificate

active

10439137

ABSTRACT:
A two-step chemical treatment method for chemically conditioning a sensor element comprising an electrolyte in ionic communication with a first electrode and a second electrode is described. The method comprises treating at least a portion of a sensor element with a first solution comprising an inorganic base, a carbonate salt and an acid salt; heating the sensor element; treating at least a portion of the sensor element with a second solution comprising an inorganic base and a carbonate salt; and drying the sensor element. The gas sensors comprising the two-step treated sensor elements have reduced lean shift, green effect, sensor output amplitude drop, and the light-off time is improved.

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