SOLID ELECTROLYTE FUEL CELL ANODE AND SOLID ELECTROLYTE FUEL CELL USING IT, AND SOLID ELECTROLYTE FUEL CELL OPERATING METHOD

摘要

PROBLEM TO BE SOLVED: To sufficiently control temperature distribution within a cell surface, and stably maintain cell performance for a long time by using a material showing a catalytic action of reforming reaction of fuel gas and specifying the specific surface area of the material on the surface part coming in contact with the fuel gas of an anode. SOLUTION: In a solid electrolyte fuel cell anode, the surface part at least coming in contact with fuel gas is made of a material such as cermet showing catalytic action of reforming reaction of the fuel gas. On the surface part of the anode, the specific surface area of the material is made larger in a portion on fuel gas outlet side than a portion on the fuel gas inlet side. The surface area is selected preferably from the range of 0.01-0.2m2 /g in the portion on the fuel gas inlet side, and from the range of 0.5-2.0m2 /g in the portion on the fuel gas outlet side. Attaching of the anode to a solid electrolyte is conducted by screen printing or brush coating.