For the first time, the fabrication of proton exchange membranes in fuel cells via an electrophoretic deposition (EPD) method is demonstrated, taking extensively researched sulfonated poly(ether ether ketone) (SPEEK) membranes as a paradigm. The membranes are obtained via depositing SPEEK ionomers, dispersed in a mixed solvent consisting dimethylsulfoxide (DMSO) and water, onto the anodic electrode under different applied voltages ranging from 15 to 25 V. The electrodeposited membranes show a number of differences from cast SPEEK membranes, e.g. smaller ionic clusters, higher surface roughness, higher water uptake and higher dry density. Particularly, the SPEEK membrane electrodeposited at 25 V reaches a proton conductivity of 0.11 S cm(-1) at 70 degrees C and 100% RH, remarkably surpassing its cast counterpart.