a conductive polymer membrane article , comprising a non - woven membrane of polymer fibers , wherein at least some of the fibers have diameters of less than one micron ; and wherein the membrane has an electrical conductivity of at least about 10 − 6 s / cm . also disclosed is the method of making such an article , comprising electrostatically spinning a spin dope comprising a polymer carrier and / or a conductive polymer or conductive nanoparticles , to provide inherent conductivity in the article .