FUEL CELL STACK, FUEL CELL MODULE, POWER GENERATION SYSTEM, AND METHOD OF PRODUCING FUEL CELL STACK

A fuel cell stack comprises: a substrate; a plurality of single fuel cells each of which includes a fuel side electrode, an electrolyte, and an oxygen side electrode deposited on the substrate; an interconnector film electrically connecting the fuel side electrode of one single fuel cell of adjacent single fuel cells of the plurality of single fuel cells and the oxygen side electrode of the other single fuel cell; and a porous ceramic film covering at least the interconnector film in a region between a first fuel side electrode of one single fuel cell of adjacent single fuel cells and a second fuel side electrode of the other single fuel cell.