Comparative Analysis of Anion Exchange Membranes for Alkaline Water Electrolysis

The growing demand for clean and sustainable energy solutions has intensified interest in hydrogen production via water electrolysis. Among the various technologies, alkaline membrane electrolysis (AME) has emerged as a promising approach due to its potential for high efficiency and reduced use of precious metals. A critical component in AME systems is the anion exchange membrane (AEM), which directly impacts electrochemical performance, operational stability, and overall system longevity. This study investigates the performance of AEMs in AME systems by comparing two commercial membranes (Fumatech FAA3-50® and PiperIon®). The evaluation focuses on key electrochemical parameters, including cell voltage and current density, across a range of operating conditions. Particular attention is given to the trade-offs between ionic conductivity and membrane durability. Results emphasize the importance of optimizing both conductivity and chemical/mechanical robustness to ensure sustainable hydrogen production in AME systems.