SETT ATT FRAMSTELLA ETT SYRGASSSENSORELEMENT, VARVID SENSORELEMENTET INNEHALLER EN FAST ELEKTROLYTKROPP MED INRE OCH YTTRE ELEKTRODER

摘要

An oxygen gas sensor having a solid electrolyte oxygen gas sensor element, with an inner conductive catalyst electrode on the interior surface and an outer conductive catalyst electrode on the exterior surface thereof, which has a high voltage output and lower internal resistance is produced by chemically activating said inner conductive catalyst electrode with an inorganic acid or and acid salt, By also subjecting said outer conductive catalyst electrode to a direct current activation under a reducing atmosphere, even more improved properties, such as fast switching response, are achieved.