COMPOSITE ELECTROLYTE MEMBRANE FOR FUEL CELL AND METHOD FOR MANUFACTURING THE SAME

摘要

PURPOSE: A manufacturing method of a composite electrolyte membrane is provided to impregnate a large amount of ion conductors into a porous support without increase of membrane thickness or membrane resistance and to prevent dissociation of the ion conductor from the porous support. CONSTITUTION: A manufacturing method of a composite electrolyte membrane comprises: a porous support; a first ion conductor which has a first ion-exchanging performance impregnated in the porous support; a second ion conductor which has a second ion-exchanging performance impregnated in the porous support. The first ion-exchange performance is larger than the second ion-exchanging performance. The manufacturing method of the composite electrolyte membrane comprises: a step of impregnating the first ion conductor into the porous support and a step of impregnating the second conductor into the pours support.