Patent ID: 8735019

Claim:
A fuel cell comprising a single fuel cell that comprises a membrane electrode assembly comprising a polymer electrolyte membrane, an anode electrode on one surface of the polymer electrolyte membrane, and a cathode electrode on the other surface of the polymer electrolyte membrane, the anode electrode comprising an anode catalyst layer and a gas diffusion layer and the cathode electrode comprising a cathode catalyst layer and a gas diffusion layer, wherein at least one of the anode catalyst layer or the cathode catalyst layer comprises core-shell catalyst particles, each of which has a core portion and a shell portion completely covering the core portion and comprising a shell metallic material; and wherein at least one of the polymer electrolyte membrane, the anode catalyst layer, the gas diffusion layer at the anode side, the cathode catalyst layer or the gas diffusion layer at the cathode side comprises metallic nanoparticles having an average particle diameter that is different from that of the core-shell catalyst particles and comprises the shell metallic material.