Evonik Launches Production of High-Performance Membrane for Lower-Cost Green Hydrogen

Marl, Germany – Evonik has started production of a newly developed polymer membrane for water electrolysis at a pilot plant in Marl. The DURAION® membrane is considered a key enabling technology for more efficient and cost-effective green hydrogen production and will in future be manufactured on a commercial scale.

The new facility is designed for an annual production capacity equivalent to up to 2.5 gigawatts (GW) of electrolysis capacity. This would be sufficient to equip around one quarter of Germany’s planned electrolysis capacity for 2030 with membranes produced in Marl.

Pilot plant marks transition to industrial-scale production

With the start of production in Marl, Evonik is moving from laboratory-scale development to continuous industrial manufacturing. The coating facility is around 20 metres long and can produce membranes with a width of up to one metre, making them suitable for use in large-scale electrolyser systems.

“Our strength lies in full backward integration – from the starting molecules to the finished membrane roll. This allows us not only to supply large volumes, but also to ensure excellent product properties with consistently high quality,” said Christian Däschlein, Head of the New Growth Area AEM at the Evonik Innovation Factory.

Initial manufacturers are already using the DURAION® membrane in pilot plants and demonstration projects.

AEM technology aims to reduce hydrogen production costs

The AEM (anion exchange membrane) electrolysis technology supported by Evonik is considered an alternative to conventional water electrolysis. It operates in an alkaline environment and enables the use of non-precious metal catalysts, which can significantly reduce capital expenditure.

Studies indicate potential cost savings of at least 25 percent. In addition, hydrogen can be produced directly under pressure, eliminating the need for additional compression steps. The technology is flexible and suitable for fluctuating renewable power generation.

Beyond high ionic conductivity and stability, the membrane prevents the mixing of hydrogen and oxygen, avoiding the formation of explosive gas mixtures. The production process also does not require the use of PFAS.

International expansion with focus on China

In parallel with the start of production in Marl, Evonik has opened the AEM Center Shanghai. The application technology centre is the first of its kind in Asia and is intended to support the industrial deployment of the technology in cooperation with local partners.

At the centre, membranes produced in Germany are tested under real-world conditions and prepared for use in large-scale hydrogen projects. The Chinese market in particular is seen as a key growth driver for AEM technology.

Source: IWR Online, 11 Jun 2026