Fuel cell and method for producing same

A fuel cell comprising:

• a first substrate;
• a first support material layer formed on one surface or both surfaces of the first substrate;
• a plurality of holes or columns formed in the first support material layer in a manner of extending in a direction perpendicular to a main surface of the first substrate;
• and
• a stacked body formed by a film forming process on a surface of the plurality of holes or columns that is not parallel to the main surface, the stacked body including an upper electrode layer, a solid electrolyte layer, and a lower electrode layer, wherein
• the upper electrode layer is also formed on a surface parallel to the main surface on the first support material layer in a manner of being continuous to the upper electrode layer formed in the plurality of holes or columns, and the lower electrode layer is also formed on a surface parallel to the main surface on the first support material layer in a manner of being continuous to the lower electrode layer formed in the plurality of holes or columns,
• the stacked body is supported by the first support material layer between upper end portions of the plurality of holes and between lower end portions of the plurality of holes, or between upper end portions of the plurality of columns and lower end portions of the plurality of columns,
• the plurality of holes or columns include a plurality of first through holes penetrating the first support material layer and the first substrate,
• side walls of the plurality of first through holes include the stacked body, and
• hollows are formed on outer peripheral sides of the side walls of the plurality of first through holes.