Evonik is constructing a pilot plant in Marl, Germany, for the production of its anion exchange membrane (AEM), DURAION.
The membrane is a key component in AEM water electrolysis, enabling cost-competitive green hydrogen production. Evonik is investing a low double-digit million euro amount, with the plant expected to be operational by the end of 2025.
DURAION membranes will be manufactured at a quality suitable for commercial electrolyzer systems. The plant will produce enough membranes to support 2.5 GW of electrolysis capacity annually. It will also have the capability to produce reinforced membranes, addressing increasing customer demand for this technology.
AEM technology offers lower investment costs compared to conventional electrolysis processes by utilizing less expensive materials for the cells. It also enables high current densities and excellent efficiency. The membrane, a sophisticated polymer, allows anions to pass through while being impermeable to gases like hydrogen. It must also withstand high pressure and temperatures.
Evonik’s innovation in membrane development is a result of expertise in polymer design, synthesis, engineering, and manufacturing, combined with market and customer insights. The company has increased production capacity for intermediate products used in DURAION membranes over the past year, and the new plant in Marl is a strategic step in expanding its membrane business.
GreentechLead.com News Desk