Patent ID: 8815465
Filing Date: 2014-08-26
Classification: H01M,Y02E,Y02T

Abstract:
1. A membrane electrode assembly for a polymer electrolyte fuel cell comprising: a proton conductive membrane for conducting protons; electrode catalyst layers arranged on both sides of the proton conductive membrane, each having catalyst particles and an electrode electrolyte; gas diffusion layers arranged on the electrode catalyst layers, each including a porous basic material; and at least one intermediate layer having a thickness of 2-6 μm arranged between at least one of the electrode catalyst layers and corresponding one of the gas diffusion layers, containing noble metallic nanoparticles which are not supported by a carrier, an electrode electrolyte, and carbon powder; wherein: said carbon powder of said intermediate layer comprises fibrous carbon; a content of the noble metallic nanoparticles is in the range of 0.1 to 0.5 mg/cm a content of the electrode electrolyte in the at least one intermediate layer is in the range of 20 to 25 mass % to a content of the noble metallic nanoparticles.