FUEL BATTERY AND MANUFACTURING METHOD THEREOF, AND METHOD FOR REPAIRING FUEL BATTERY

摘要

PROBLEM TO BE SOLVED: To provide: a fuel battery, by which an operation can be maintained even if dense films (a solid electrolyte film and an interconnector) are damaged; and a method for manufacturing such a fuel battery; and a method for repairing such a fuel battery.SOLUTION: A fuel battery comprises a cell stack 101 having: a plurality of fuel battery cells 105, each including a fuel electrode 109, a solid electrolyte film 111 and an air electrode 113; and interconnectors 107 for electrically connecting between the fuel battery cells 105 adjacent to each other. The cell stack 101 includes a Na-containing layer 103b on a face of the fuel electrode 109 on the side opposite to the solid electrolyte film 111, of which the Na concentration is 1000 to 5000 wtppm.SELECTED DRAWING: Figure 1