Method for applying a cermet electrode layer to a sintered electrolyte and electrochemical reactor
AssigneeStichting Energieonderzoek Centrum Nederland
InventorsFranciscus Petrus Felix Van Berkel, Jan Peter De Jong, Jozef Peter Paul Huijsmans
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Abstract
The invention relates to a method for applying a cermet electrode layer to a sintered electrolyte. This layer consists of a mixture of an ion-conducting oxide and a semiprecious metal oxide or precious metal oxide. According to the invention, the ion-conducting oxide is calcined without the presence of the (semi)precious metal oxide in order to provide for lateral electron conductivity, while the sintering of the mixture of the electrolyte takes place at as low a temperature as possible.
Claims7
Method for applying a cermet electrode layer to a sintered electrolyte, which layer at least comprises an oxide (A) of a semiprecious metal or precious metal and an oxide (B) which conducts ions, in which method a slurry is formed of (A) and (B), the slurry is applied to the electrolyte and the coated electrolyte is sintered, wherein (B) is calcined at a temperature between 1250.degree. C. and 1600.degree. C. prior to the slurry being formed with (A), the particle size of (B) becoming greater than that of (A), the sintering being carried out at a temperature between 1200.degree. and 1300.degree. C., and wherein, after sintering, the electrolyte provided with a layer is subjected to a reducing treatment in order to convert (A) into metal.
Dependencies are inferred from the claim text.