Patent ID: 7867670

Claim:
A fuel cell system comprising: at least one hydrogen supplier for generating hydrogen gas from a fuel and for supplying the hydrogen gas through at least one gas passage; at least one electricity generator for generating electrical energy by reacting the hydrogen gas supplied from the at least one hydrogen supplier with an oxidizing agent gas; at least one hydrophobic porous membrane on the at least one gas passage, wherein the at least one hydrophobic porous membrane comprises a first hydrophobic porous membrane on an inner side of the at least one gas passage, and a second hydrophobic porous membrane on an outer side of the at least one gas passage between the first hydrophobic porous membrane and the at least one electricity generator, and a pore size of the first hydrophobic porous membrane is larger than a pore size of the second hydrophobic porous membrane; a water solution in a discharging space between the first hydrophobic porous membrane and the second hydrophobic porous membrane; and a porous material for absorbing the water solution in the discharging space between the first hydrophobic porous membrane and the second hydrophobic porous membrane.