Method for fabricating high-activity electrodes for exhaust gas

Details Method for fabricating high-activity electrodes for exhaust gas Method for fabricating high-activity electrodes for exhaust gas

1996-10-10

1997-12-16

Tung, T.

Coating processes

Immersion or partial immersion

204421, 204424, 264DIG36, 264104, 264603, 264614, 264618, 427435, 427436, 4274432, B05D 118, G01N 27406

Patent

active

056982674

ABSTRACT:
A method for fabricating a high-activity cermet electrode which is applied on an exhaust gas sensor including an oxygen ion conducting solid electrolyte, which is composed of a cermet material composed of at least one catalytically active material and at least one oxygen ion conducting ceramic material, which is bonded to the solid electrolyte of the exhaust sensor by co-sintering the cermet electrode and the solid electrolyte at a temperature ranging from 1300.degree. to 1600.degree. C. to provide a porous cermet electrode, and which contains at least one further catalytically active material which is embedded in the pores of the porous cermet electrode after co-sintering, the method including bonding together an unsintered solid electrolyte which conducts oxygen ions and a cermet electrode by co-sintering at from 1300.degree. to 1600.degree. C. to provide a porous cermet electrode; and subsequently introducing at least one further catalytically active material into pores of the porous cermet electrode.

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