Fuel cell

Details Fuel cell Fuel cell

H - Electricity

01

M

319/9

H01M 8/24 (2006.01) H01M 8/04 (2006.01)

Patent

CA 1279893

Abstract of the Disclosure In a fuel cell according to the present invention, a plurality of unit cells each includes an anode and a cathode, each formed of a porous substrate, and an electrolyte matrix layer interposed between the anode and the cathode. A fuel gas channel is formed on one surface of the anode that is located on the side opposite to the electrolyte matrix layer, and an electrolyte-solution permeable portion is formed on the same surface of the anode. The unit cells are stacked in layers, and a plurality of separator elements are interposed between the adjacent unit cells to form a stacked structure. Each of the separator elements has a recess formed on its surface that is located on the side facing the anode. The recess serves to store an electrolyte solution and contain the electrolyte-solution permeable portion. Thus, if an electrolyte solution, with which the electrolyte matrix layer is impregnated, is reduced, the solution stored in the recess permeates the matrix layer, flowing through the permeable portion. As a result, the voltage of the fuel cell is prevented from dropping, thus permitting a prolonged continuous operation of the fuel cell.

528741

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