Unit cell for solid-oxide fuel cell and solid-oxide fuel cell using same

A solid-oxide fuel cell comprising a plurality of unit cells, wherein:

• each of the plurality of unit cells comprises an anode, an electrolyte layer, a cathode, a connector layer, and no separation plate,
• the anode comprises a first surface, a second surface, four edges with marginal regions along periphery of the four edges, fuel flow holes formed in a first set of marginal regions on two of the four edges which are opposite to each other, air flow holes formed in a second set of marginal regions on the other two edges of four edges, which are orthogonal to the two edges containing the fuel flow paths, the second set of marginal regions being opposite to each other, and a plurality of fuel flow paths formed in the anode;
• the electrolyte layer is applied on the first surface of the anode;
• the cathode is layered on the electrolyte layer;
• the connector layer is applied on the second surface of the anode;
• the plurality of unit cells are layered to provide a solid-oxide fuel cell stack such that a cathode of one of the unit cells is coupled to a connector layer of another unit cell, air flow holes of the plurality of unit cells are connected to each other to form an air flow passage, and fuel flow holes of a plurality of unit cells are connected to each other to form a fuel flow passage.