How gas permeability influence the performance of PEM fuel cell and on which factors gas permeability dependency major effects ?

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Jumaa Salman Chiad

see

https://www.researchgate.net/publication/277462057_Effect_of_Temperature_on_In-Plane_Permeability_of_the_Gas_Diffusion_Layer_of_PEM_Fuel_Cell

Article Fuel Cell Membrane Characterizations

Waqas Tanveer

The heart of the PEM fuel cell is a thin polymer membrane. This membrane must

conduct protons on the one hand and must be impermeable to the reactant gases

hydrogen and oxygen as well as to the electrons, produced and consumed at both

electrodes on the other hand.

Traditionally, for gas permeability relations normally Darcy's formula is utilized for a system of mixed gases. While for mean free paths that are comparable to the scale of the system, Knudsen diffusion is considered.