초록 ▼

A fuel cell comprises unit cells stacked through separators therebetween; each unit cell comprising a fuel electrode plate, an oxidizing agent electrode plate and a matrix between electrode plate and the oxidizing agent plate, U-shaped gas flow passages for the fuel electrode and for the oxidizing a

A fuel cell comprises unit cells stacked through separators therebetween; each unit cell comprising a fuel electrode plate, an oxidizing agent electrode plate and a matrix between electrode plate and the oxidizing agent plate, U-shaped gas flow passages for the fuel electrode and for the oxidizing agent electrode are provided in a counter-current relation to each other with gas inlets and gas outlets for the fuel electrode and the gas inlets and the gas outlets for the oxidizing agent electrodes being provided at the opposite sides of the fuel cell, respectively, and communicated respectively with manifolds at the same opposite sides of the fuel cell. The fuel cell is simple in structure, highly reliable in fabrication, operation and maintenance, and high in gas utilization efficiency.

대표청구항 ▼

In a fuel cell comprising a plurality of unit cells each comprising a fuel electrode plate, an oxidizing agent electrode plate and a matrix, the fuel electrode plate and the oxidizing agent plate being disposed face-to-face through the matrix, the unit cells being stacked through separators between

In a fuel cell comprising a plurality of unit cells each comprising a fuel electrode plate, an oxidizing agent electrode plate and a matrix, the fuel electrode plate and the oxidizing agent plate being disposed face-to-face through the matrix, the unit cells being stacked through separators between the unit cells, forming a stacked assembly, a gas flow passage for fuel electrode and oxidizing agent electrode being provided on one side each of the electrode plates or the separators, and manifolds for gas supply and discharge to the gas flow passages on the electrode plates or the separators being provided at sides of the stacked assembly, an improvement comprising the gas flow passage having at least one gas inlet and at least one gas outlet at one outer edge of the electrode plate or separator, the at least one gas inlet and the at least one gas outlet adjacent thereto being isolated by at least one partition wall extended therebetween along a gas flow direction and open at a position most remote from the gas inlet and gas outlet, thereby forming a U-type passage having at least one gas inflow path starting at said at least one inlet and at least one gas outflow path ending at said at least one outlet, said at least one gas inflow path and said at least one gas outflow path communicating with each other at the most remote position, the gas flow passage for the fuel electrode and the gas flow passage for the oxidizing agent electrode being arranged in a counter-current relation to each other, the at least one gas inlet and the at least one gas outlet for the fuel electrode and the at least one gas inlet and the at least one gas outlet for the oxidizing agent electrode being provided at the opposite sides of the stacked assembly, respectively, and communicated respectively with the manifolds provided at the same opposite sides of the stacked assembly.