Patent ID: 8329356

Claim:
A product comprising: a fuel cell microporous layer that, in a proton exchange membrane fuel cell, is situated between an electrode layer and a gas diffusion media layer, the fuel cell microporous layer consisting essentially of graphitized carbon particles and a hydrophobic binder, the graphitized carbon particles having pores, the pores of the graphitized carbon particles being defined by a pore size distribution wherein, as defined by mercury porosimetry, at least 90% of an intruded volume is introduced into pores having a pore size diameter ranging from about 0.43 μm to about 0.03 μm and a peak differential intrusion of greater than 40 ml/g/μm; wherein at least 55% of the intruded volume is introduced into pores having a pore size diameter ranging from about 0.11 μm to about 0.06 μm.