MEMBRANE ELECTRODE ASSEMBLY FOR PROTON EXCHANGE MEMBRANE FUEL CELL AND MANUFACTURING METHOD OF IT

摘要

A membrane electrode assembly for a polymer electrolyte fuel cell is provided to improve the performance of a fuel cell due to low diffusion resistance to reactive gas and high limit current by employing a catalyst layer including micro pores. A membrane electrode assembly for a polymer electrolyte fuel cell comprises a platinum catalyst supported in carbon, a hydrogen-ion-conductive polymer, and a catalyst layer(11) including micropores(18) at both ends of the polymer electrolyte membrane. The catalyst layer additionally includes pores of 0.02~0.2 micron and micro pores of average 0.5~3 micron diameter.