Solid oxide cell and solid oxide cell stack

A solid oxide cell stack comprising:

• first and second interconnects;
• and
• a solid oxide cell disposed between the first and second interconnects,
• wherein the solid oxide cell comprises:
• a fuel electrode;
• an electrolyte including a base portion disposed on the fuel electrode, a dam portion disposed on the base portion, and a recess portion surrounded by the dam portion;
• and
• an air electrode disposed in the recess portion of the electrolyte,
• wherein a region in which the fuel electrode and the electrolyte overlap each other in a thickness direction of the electrolyte is greater than or equal to a region in which the air electrode and the electrolyte overlap each other.