Evonik Boosts Green Hydrogen Production with New Industrial DURAION AEM Membrane Line

So, guess what? Evonik Industries AG has just kicked off the big-time production of its super cool DURAION anion exchange membranes (AEM) at their site in Marl, North Rhine-Westphalia. This is a huge step forward for green hydrogen production—it’s like taking things from the lab and turning them into actual factory processes.

By ramping up their membrane supply beyond just pilot projects, Evonik is really stepping up to secure a vital part of the AEM electrolysis puzzle. They’re saying that their annual output could totally meet the demand for electrolysers with over 2.5 GW of capacity, paving the way for the first wave of commercial AEM stacks to hit the market.

A step change in membrane supply

Now, check this out: the new coating line at Chemiepark Marl is around twenty meters long and can handle polymer films that are up to one meter wide. This smart, continuous process combines everything from feeding raw materials, casting polymers, drying, and even checking the quality—all the way to producing finished membrane rolls that are ready for assembly. They’ve got this fabric reinforcement option too, which really steps up the mechanical strength—perfect for managing pressure in advanced electrolyser designs.

Why AEM matters for green hydrogen

AEM electrolysis is kind of a hybrid—mixing alkaline chemistry where hydroxide ions do the work with a solid polymer separator. This design allows for using non-noble metal catalysts, which cuts costs way down while keeping things compact and fast-paced, especially when it comes to adapting to renewable energy sources. The DURAION membranes are specifically designed for high ionic conductivity and chemical stability in alkaline conditions, tackling some of the durability issues we’ve seen in older materials.

Evonik claims that using electrolysers with DURAION could drop initial investment costs by about 25% compared to some existing systems. Plus, the direct pressurized hydrogen output could cut down on balance-of-plant costs, meaning some setups might not even need separate compression units.

Full value‐chain integration

Evonik is all about keeping things tight under one roof—this means full integration of the entire value chain, from making the polymer precursors to the final delivery of membrane rolls. This strategy definitely stands out, especially compared to the typical fragmented supply chains where raw materials and processing come from all over. By handling each step themselves, Evonik is looking to maintain quality control, shorten lead times, and protect electrolyser OEMs from potential material shortages.

Strategic expansion into China

Alongside the Marl launch, Evonik’s also setting up an AEM application center in Shanghai. This new hub is crucial for local electrolyser manufacturers, helping them integrate the DURAION membranes, validate their performance in local conditions, and speed up product qualification. Given that China is racing ahead with its hydrogen infrastructure and fuel cell initiatives, having support on the ground is key for landing early project wins.

Inside Evonik’s Innovation Factory

At the core of this movement is Evonik’s New Growth Area AEM within its Innovation Factory, led by Christian Däschlein. By treating AEM as a dedicated growth area, Evonik is underscoring its long-term commitment to the hydrogen value chain. Centralizing their polymer research, synthesis, and coating capabilities helps ensure consistent performance from these membranes and provides needed supply security—a big deal for electrolyser OEMs looking for reliable, long-lasting materials.

Regional hub for hydrogen components

By situating this production line in North Rhine-Westphalia, Evonik is tapping into one of Europe’s most advanced hydrogen and industrial clusters. The Chemiepark Marl offers easy access to utilities, logistics, and a skilled workforce seasoned in large-scale chemical processes. Plus, being close to planned hydrogen pipeline networks and various decarbonization projects just adds to the site’s strategic importance in European supply chains.

Policy tailwinds and environmental considerations

The timing of Evonik’s investment is spot on, aligning with the European Union and German hydrogen strategies that aim for massive electrolyser capacity by the end of the decade. Meanwhile, the incentives from Shanghai for clean-energy manufacturing and demonstration projects are reinforcing the business case for local support. Evonik is even planning to power its coating line with low-carbon electricity and will optimize solvent recovery to reduce the environmental impact of membrane production—a win-win!

Implications for the hydrogen sector

With a solid and reliable supply of AEM membranes on the table, electrolyser OEMs can shift gears from demos to full-blown commercial deployments. This opens up all kinds of new opportunities in:

• Industrial decarbonization—think steel, chemicals, and refining plants looking for flexible hydrogen sources.
• Power-to-X applications—like synthetic fuels, ammonia, and other green feedstocks.
• Distributed energy systems—smaller units alongside wind or solar farms that need quick load response.

Investors and policymakers are likely to see the ramping up of membrane supply as a big thumbs-up for the commercial potential of AEM. We may see multi-year supply agreements and solid orders rolling in as financiers gain confidence in availability and quality control.

Looking ahead

The first membrane rolls from Marl will soon be making their way into customer stacks, where their durability, performance retention, and maintenance will be under the microscope. If DURAION hits its targets, Evonik could really spark a shift in green hydrogen economics—bridging the gap between cost-effective catalysts and flexible, dynamic operations. The hydrogen industry will definitely be keeping a close eye to see if AEM electrolysis can step up and join alkaline and PEM as a go-to production method.