Tokuki Satake

Solid oxide electrolyte fuel cell having dimpled surfaces of a power generation film

The invention relates to a solid oxide electrolyte fuel cell (SOFC) which can be used as a cell for water electrolysis, CO2 electrolysis and other electrolyses, as well as for power generation. In a SOFC in which both surfaces of a power generation film comprising three layers of a fuel electrode, a solid electrolyte, and an oxygen electrode are formed with a number of dimples, the thickness of a yttria-stabilized zirconia film that constitutes the solid electrolyte is 5 to 100 μm, and the thickness of an oxygen electrode material that constitutes the oxygen electrode which is provided on one side of the yttria-stabilized zirconia film is 200 to 2,000 μm. As a result, the power generation performance can be greatly improved and a sufficiently strong oxygen electrode material prevents a thin yttria-stabilized zirconia film from being damaged in manual operations.