Green hydrogen is produced by electrolysis using renewable electricity and is a key energy source for decarbonising industrial processes and heavy-duty mobility. At ZBT, the focus is on two innovative technologies: PEM water electrolysis is characterised by high power density and fast dynamics, while AEM water electrolysis targets cost-effective materials and promises long-term economic potential. Both approaches make an important contribution to the further development of efficient electrolysis systems.

Anion exchange membrane water electrolysis (AEM-WE) combines the advantages of alkaline and PEM-based processes. It enables the cost-effective production of hydrogen through the use of precious metal-free catalysts and proven polymer membrane technologies.

Research and development focus on optimising membranes, catalysts and MEA manufacturing processes. Scalable coating techniques such as spray, doctor blade or slot die processes are used.

Long-term tests under real conditions (e.g. up to 8 bar) and high-resolution analysis ensure quality and enable transfer to industrial applications.

The work is carried out in the AEM Water Electrolysis working group of the New Materials and Technologies department.