Fig. 1: Schematic of PEFC and cathode CL.
From: The role of oxygen-permeable ionomer for polymer electrolyte fuel cells

PEM, MPL, and GDL denote the proton exchange membrane, microporous layer, and gas diffusion layer, respectively.
From: The role of oxygen-permeable ionomer for polymer electrolyte fuel cells

PEM, MPL, and GDL denote the proton exchange membrane, microporous layer, and gas diffusion layer, respectively.