GAS DIFFUSIVE POROUS LAYER, GAS DIFFUSIVE LAYER CONTAINING THE SAME, PROCESS FOR PRODUCING THE GAS DIFFUSIVE POROUS LAYER, AND MEMBRANE / ELECTRODE ASSEMBLE

摘要

Provided is a low-cost gas diffusion porous layer which has high production efficiency, low resistance in the film thickness direction and high gas diffusion ability. This gas diffusion porous layer contains carbon particles and a hydrophilic polymer having a surface contact angle of 90° or less. This gas diffusion porous layer has a surface contact angle of 90° or less.