| 摘要 |
There is provided a solid oxide fuel battery cell that has a high initial power generation performance and a good power generation durability while ensuring adhesion between an air electrode layer and a current collector layer. The solid oxide fuel battery cell includes at least a solid electrolyte, a fuel electrode layer provided on one surface side of the solid electrolyte, an air electrode layer provided on the other surface side of the solid electrolyte, and a current collector layer provided on the surface of the air electrode layer, wherein the air electrode layer is formed of an oxide selected from the group consisting of lanthanum ferrite perovskite oxides, lanthanum cobalt perovskite oxides, and samarium cobalt perovskite oxides, and the current collector layer is a porous layer including silver, palladium, and an oxide and has an average porosity of 20% to 70% in a portion other than a portion near a boundary between the current collector layer and the air electrode layer and, in the near-boundary portion, an average porosity of not less than 50% of the average porosity of the portion other than the near-boundary portion. |
