| 摘要 |
PROBLEM TO BE SOLVED: To provide: an electrolyte sheet for a solid oxide fuel cell, which is relatively large in superficial area, superior in power generation performance and adhesion with an electrode layer, relatively high in mechanical strength, and high in production efficiency; a stamper for manufacturing such an electrolyte sheet for a solid oxide fuel cell; and a method for manufacturing such an electrolyte sheet.SOLUTION: An electrolyte sheet 1 for a solid oxide fuel cell has two or more depressions 2 and/or projections on at least one face thereof. The depressions 2 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 2 and projections, the average depth of the depressions 2, the average height of the projections, the surface roughness of the depressions 2 and projections, and the average thickness of the electrolyte sheet are limited in predetermined ranges.SELECTED DRAWING: Figure 1 |
