We industrialize electrochemical innovation.
From our site in Freiburg, Germany, we combine electrochemical expertise, scalable manufacturing and application-specific development to help customers turn advanced materials and component concepts into reliable products.
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Built for
electrochemistry at scale.
Our team brings together expertise in electrochemistry, polymer chemistry, catalyst integration, coating technology, manufacturing, automation and data science.
This combination allows us to work across the full development chain: from material evaluation and component design to electrochemical validation, coating process development and pilot-scale manufacturing.
Our goal is simple: develop electrochemical components that not only perform in the lab, but can also be manufactured reproducibly and integrated into real systems.
300m² lab facility
70+ customers
Bridging the gap between material innovation and industrial manufacturing
The performance of fuel cells, electrolyzers and other electrochemical systems depends on how well membranes, catalysts and electrodes work together. Even small improvements in these components can make a significant difference in efficiency, durability and cost.
But developing promising materials is only part of the challenge. Turning them into reliable, reproducible and scalable membrane electrode assemblies (MEAs) is often where innovation meets its biggest hurdles.
This is why ionysis was founded.
Building on more than a decade of electrochemical research in Freiburg, Germany, we combine deep materials expertise with advanced coating technologies and scalable manufacturing.
We develop and manufacture catalyst-coated membranes (CCMs), electrodes and MEAs, helping our partners integrate new materials, improve existing components and scale up innovative electrochemical technologies.
Our approach combines the flexibility of research and development with the quality and reproducibility required for industrial production. From early prototypes to pilot-scale manufacturing, we help turn promising material innovations into reliable components for real-world applications.
11 PhDs
7500 citations
10 Patents
See ionysis in action
A look behind the scenes at our team, technology and journey from research to industrial electrochemistry.
Recorded in late 2025 for a German Documentary series.
Founder-Led Leadership
Lisa Langer
Chief Financial Officer
Dr. Florian Lombeck
Chief Scientist
Dr. Andreas Büchler
Chief Operating Officer
Dr. Severin Vierrath
Head of Production
Dr. Matthias Breitwieser
Chief Technology Officer
All five founders continue to lead ionysis, bringing together deep technical expertise, entrepreneurial drive and a shared long-term vision.
Built with strong industrial and scientific partners
We collaborate with customers, material suppliers, catalyst manufacturers, stack developers, research organizations and technology partners to turn material innovations into scalable products.
Our partnerships range from confidential customer development projects to joint technology development and publicly funded research initiatives.
We value the trust our partners place in us. Many of our collaborations involve sensitive technologies and proprietary developments. We therefore respect our partners' confidentiality and do not publicly disclose customer relationships without their consent.
Our ecosystem partners
We cordially acknowledge financial support from
Are you working on your next electrochemical product?
Whether you need a new membrane or catalyst integrated, a component benchmarked, a coating process scaled or a complete electrode, CCM or MEA developed, we are ready to discuss your requirements.