Solid oxide electrochemical device unit cell

A solid oxide electrochemical device, comprising

• a first current collector layer;
• a cathode that is layered with respect to the current collector layer in a stacking direction of the solid oxide electrochemical device;
• a top welding section extending around an outer circumferential perimeter of the first cathode, the top welding section having at least one welding point that is welded to the first current collector;
• an electrolyte layer layered with respect to the first cathode in the stacking direction;
• and
• a seal gap located adjacent to and coplanar with the first current collector layer in the stacking direction, the seal gap being layered with respect to the electrolyte layer.

A solid oxide electrochemical device unit cell comprising:

• a first current collector layer;
• a first cathode layered with respect to the first current collector layer in a stacking direction of the solid oxide electrochemical device;
• a first top welding section extending around an outer circumferential perimeter of the first cathode, the top welding section having at least one welding point that is welded to the first current collector;
• and
• a second cathode that is coplanar with the first cathode in the stacking direction, the top welding section located between the first and second cathodes.