초록 ▼

In a stacked structure for forming a molten carbonate fuel cell according to the present invention, a plurality of unit cells are stacked, and separator elements are respectively interposed between the adjacent unit cells. First and second internal manifolds extend in the stacking direction, at both

In a stacked structure for forming a molten carbonate fuel cell according to the present invention, a plurality of unit cells are stacked, and separator elements are respectively interposed between the adjacent unit cells. First and second internal manifolds extend in the stacking direction, at both sides of the stacked structure. Third internal manifold extends at the center of the structure, in the direction of stacking. First fuel gas passages, communicating with the first and third internal manifolds, are formed at the anode side of the separator element. Second fuel gas passages, communicating with the second and third internal manifolds, are formed at the anode side of the separator element. Thus, the fuel gas flows through the first internal manifold, the first fuel gas passages and the third internal manifold, and the fuel gas flows through the second internal manifold, the second fuel gas passages and the third internal manifold. As a result, the current density distribution and the temperature distribution are uniform.

대표청구항 ▼

A molten carbonate fuel cell comprising: a plurality of unit cells formed of a plurality of plates each having opposed two flat square surfaces and four sides, each unit cell having a plurality of first and second side segment channels penetrating through said each plate, and a plurality of third se

A molten carbonate fuel cell comprising: a plurality of unit cells formed of a plurality of plates each having opposed two flat square surfaces and four sides, each unit cell having a plurality of first and second side segment channels penetrating through said each plate, and a plurality of third segment channels penetrating through said each plate at a center location between side segment channels; a plurality of separator elements formed of at least one plate having two opposed flat square surfaces and four sides, each separator element having first and second segment channels provided at positions corresponding to the plurality of first and second segment channels of said unit cell, third segment channels provided at positions corresponding to the plurality of third segment channels of said unit cell, first fuel gas passages provided on one side of said separator element, to communicate the first segment channels with the third segment channels of said separator element, second fuel gas passages provided on one side of said separator element, to communicate the second segment channels with the third segment channels of said separator element, and oxidant gas passages formed on the other side of said separator element, said plurality of separator elements being interposed between adjacent said unit cells to form a stacked structure in which the first segment channels of said unit cell communicate with the first segment channels of said separator element, to define a first internal manifold to communicate with the first fuel gas passages, the second segment channels of said unit cell communicate with the second segment channels of said separator element, to define a second internal manifold to communicate with the second fuel gas passages, and the third segment channels of said unit cell are communicated with the third segment channels of said separator element to define a third internal manifold to communicate with the first and second fuel gas passages, fuel gas flowing through the first, second, and third internal manifolds.