Solid polymer fuel cell

Abstract

A solid polymer fuel cell includes an electrode-electrolyte membrane coupling structure 3 configured to generate electric power through a chemical reaction between a fuel aqueous solution and an oxidant; a hydrophilic membrane 17 made of a hydrophilic material; and a repellent porous membrane 18 made of a repellent material. The repellent porous membrane 18 is arranged between the electrode-electrolyte membrane coupling structure 3 and the hydrophilic membrane 17. The fuel aqueous solution is supplied through the hydrophilic membrane 17 and the repellent porous membrane 18 to the electrode-electrolyte membrane coupling structure 3. At this time, the solid polymer fuel cell 10 can prevent the fuel from being excessively permeated, even though using the fuel aqueous solution of the high concentration. Also, the solid polymer fuel cell can prevent a lack of the water on the anode 6 and the increase in the crossover of the fuel to the cathode 7, and can suppress the property deterioration and can obtain the sufficient electric generation property.

Dependencies are inferred from the claim text.