METHOD OF MAKING FLUID DIFFUSION LAYERS AND ELECTRODES HAVING REDUCED SURFACE ROUGHNESS

摘要

The present methods make fluid diffusion layers having reduced surface roughness. The methods used for adhering the loading material to the substra te surface can reduce the average surface roughness of the fluid diffusion layers, thereby reducing leaks in and damage to ion exchange membranes. When fluid diffusion layers and electrodes having reduced surface roughness are employed in membrane electrode assemblies, better reliability and performanc e are obtained. A method of calculating the surface roughness of a fluid diffusion layer may be used.