Pore-scale flow and mass transport in gas diffusion layer of proton exchange membrane fuel cell with interdigitated flow fields

► Pore-scale flow and mass transport in a gas diffusion layer (GDL) of interdigitated PEMFC is studied. ► Effects of local porous structures of GDL on fluid flow and mass transport are significant. ► Pore-scale dynamic behaviors of liquid water in the porous GDL are simulated. ► Narrower land reduces liquid water removal time and residual saturation in the GDL. ► Higher contact angle increases the removal time and reduces the residual saturation in the GDL.