| 摘要 |
PROBLEM TO BE SOLVED: To provide: an electrolyte sheet for a solid oxide fuel cell, which is relatively large in superficial area, and superior in power generation performance and the adhesion with an electrode layer, and which is arranged so that the occurrence of fracture or crack is suppressed in cell stacking, operation and the like while having a through-hole and therefore, allows for the formation of a gas flow path; and a single cell for a solid oxide fuel cell including such an electrolyte sheet for a solid oxide fuel cell.SOLUTION: An electrolyte sheet for a solid oxide fuel cell according to the present invention has two or more depressions and/or projections on at least one face thereof. The depressions and projections have: a bottom face shape of a circle, an oval or a round cornered polygon whose vertex shape has a curve of 0.1 μm or larger in curvature radius; and/or a three-dimensional shape of a hemisphere, a semi-oval sphere or a polyhedron whose sectional shape has a curve of 0.1 μm or larger in curvature radius at vertexes and ridgelines. The average equivalent circle diameter of bottom faces of the depressions and projections is 0.5-250 μm; and the average depth of the depressions and the average height of the projections are 0.3-50 μm. The electrolyte sheet has at least one through-hole in sheet plane, of which the average thickness is 30-400 μm.SELECTED DRAWING: None |
