Hydrogen production by water electrolysis with an ultrathin anion-exchange membrane (AEM)

Abstract

A new ultrathin anion exchange membrane (AEM) is proposed for low cost AEM electrolysis. The advantages that thin membranes offer include reduced mass transport resistance and ohmic resistance. A membrane electrode assembly (MEA) with a thinner membrane will have improved hydroxide ion transfer due to the shorter ion transfer pathway. We fabricated a MEA with a commercially available ultrathin A-901 membrane (9 um thick) and non-noble metal catalysts. We determined the efficiency and stability of this ultrathin membrane using electrochemical impedance spectroscopy