DURAION® anion exchange membranes and ionomer are specifically engineered for use in water electrolyzers operating under alkaline conditions. They exhibit exceptionally high ionic conductivity, superior mechanical integrity and outstanding chemical stability throughout the lifetime of the electrolyzer. Additionally, they exhibit low hydrogen crossover rates. Evonik’s polymer expertise has been key to achieving the well-balanced properties of DURAION® membranes, fulfilling the quality triangle required for membrane-based water electrolysis.
AEM-Elektrolyse: The best of two wolrds
By integrating the DURAION® membrane into an AEM electrolyzer, the investment and operating costs of hydrogen production can be reduced compared to today’s benchmark technologies—PEM water electrolysis and traditional alkaline electrolysis. Since AEM electrolysis operates under mildly alkaline conditions, noble‑metal‑free catalysts can be used for the electrodes, and cost‑effective materials for the cell design. In contrast to alkaline electrolysis, AEM electrolysis can be operated at higher current densities and can be ramped up and down dynamically. This results in a high degree of flexibility.
Evonik guarantees—based on extensive and backward‑integrated expertise in monomers and polymers—scalable and customized solutions at the same time. The development of DURAION® is based on Evonik’s decades of experience in the synthesis of high‑performance polymers, their scalability, and the subsequent membrane production.
Our product portfolio includes free-standing membranes (DURAION® Membrane 101) and reinforced membranes (DURAION® Membrane 201) in various widths. Moreover, an ionomer solution (DURAION® Ionomer S101) for the preparation of catalyst coated membranes (CCM) or catalyst coated substrates (CCS) can be provided.
Looking for the right membrane for your hydrogen application?
Talk directly to our membrane experts and get application‑specific guidance for green hydrogen and advanced electrochemical systems – based on validated materials science and real industrial experience.