Enhanced PEM Water Electrolysis with Low Equivalent Weight Aquivion® Membranes

This study evaluates the performance and durability of various Aquivion® membranes for PEM electrolysis, focusing on different configurations: bare cast polymers, polymers with radical scavengers and reinforced ones. Membrane-electrode assemblies (MEAs) were produced and tested for hydrogen production by means of polarization curves, electrochemical impedance spectroscopy (EIS) and long-term durability tests. Microscopic and physico-chermical analyses (TEM, SEM, optical microscopy, XRD, XRF,) were used to understand the membrane and ionomer structure and its impact on performance. The goal was to identify optimal membrane strategies for enhancing PEM water electrolysis efficiency and stability in green hydrogen production.