Patent ID: 7601454
Filing Date: 2009-10-13
Classification: H01M,Y02E

Abstract:
1. A polymer electrolyte fuel cell comprising: a cathode diffusion layer, a cathode electrode catalyst layer, a polymer electrolyte membrane, an anode electrode catalyst layer, an anode diffusion layer, and carbon whiskers positioned in a portion of the cathode electrode catalyst layer on the side of the cathode diffusion layer and positioned in a portion of the anode electrode catalyst layer on the side of the anode diffusion layer, wherein electron conductivity of the cathode electrode catalyst layer at a portion on the side of the cathode diffusion layer is higher than at a portion on the side of the polymer electrolyte membrane and electron conductivity of cathode electrode catalyst layer at the portion on the side of the polymer electrolyte membrane is lower than at the portion on the side of the cathode diffusion layer, and wherein electron conductivity of the anode electrode catalyst layer at a portion on the side of the anode diffusion layer is higher than at a portion on the side of the polymer electrolyte membrane and electron conductivity of anode electrode catalyst layer at the portion on the side of the polymer electrolyte membrane is lower than at the portion on the side of the anode diffusion layer.