| 摘要 |
A solid oxide fuel cell stack includes a support, a plurality of power generation elements provided on a surface of the support, the plurality of power generation elements connected in series, each including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order, and an interconnector that electrically connects an air electrode in one of adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte in adjacent one power generation element is provided between a fuel electrode in the adjacent one power generation element and the fuel electrode in the adjacent other power generation element, and an insulating member is provided at a position that is on the solid electrolyte in the adjacent one power generation element and between the air electrode in the adjacent one power generation element and the solid electrolyte therein. |
| 主权项 |
1. A solid oxide fuel cell stack comprising:
a support; and a plurality of power generation elements provided on a surface of the support, wherein when two adjacent power generation elements in the plurality of power generation elements are a first power generation element and a second power generation element, respectively, the first power generation element comprises
a first fuel electrode,a first air electrode, anda first solid electrolyte provided between the first fuel electrode and the first air electrode, the first fuel electrode being provided between the support and the first air electrode, the second power generation element comprises
a second fuel electrode,a second air electrode, anda second solid electrolyte provided between the second fuel electrode and the second air electrode, the second fuel electrode being provided between the support and the second air electrode, the solid oxide fuel cell stack further comprises an interconnector that electrically connects the first air electrode to the second fuel electrode, the first power generation element is connected in series with the second power generation element through the interconnector, when a vertical direction from the surface of the support to the first fuel electrode, the first solid electrolyte, and the first air electrode or a vertical direction from the surface of the support to the second fuel electrode, the second solid electrolyte, and the second air electrode is presumed to be a Z axis direction, the two adjacent power generation elements include
a second area of the first power generation element, the second area including the first solid electrolyte and the first air electrode arranged in that order in the Z axis direction,a third area of the first power generation element, the third area including the first fuel electrode, the first solid electrolyte, and the first air electrode arranged in that order in the Z axis direction, anda sixth area of the first power generation element, the sixth area including the second fuel electrode, the interconnector, and the first air electrode arranged in that order in the Z axis direction, when a direction that is vertical to the Z axis direction and in which oxide ions migrate is presumed to be an X axis direction, the third area, the second area, and the sixth area are continuously adjacent in that order in the X axis direction, and the solid oxide fuel cell stack further includes an insulating member provided in contact with the interconnector, and the insulating member includes, in the second area, a first portion provided between the first solid electrolyte and the first air electrode, and the whole area of the surface of the interconnector is covered with the first air electrode. |
