Solid electrochemical device

A solid electrochemical device comprising:

• a solid electrolyte having a first main surface and a second main surface that is a surface opposite to the first main surface;
• a first electrode having a third main surface and a fourth main surface that is a surface opposite to the third main surface, the first electrode being provided such that the third main surface faces the first main surface;
• a first current collector having a fifth main surface and a sixth main surface that is a surface opposite to the fifth main surface, the first current collector being provided such that the fifth main surface faces the fourth main surface;
• and
• a first interconnector having a seventh main surface, the first interconnector being provided such that the seventh main surface faces the sixth main surface,
• wherein the seventh main surface of the first interconnector is a flat surface,
• wherein the first current collector is formed of a first metal porous body having a three-dimensional network structure, and
• wherein a plurality of first through holes are formed in the fifth main surface, the plurality of first through holes extending along a first direction from the fifth main surface toward the sixth main surface.