Ionysis

Founded in 2022, Ionysis is a private headquartered in Freiburg im Breisgau, Germany with approximately 10-50 employees specializing in Hydrogen, Energy Storage.

Ionysis GmbH is a science-driven green technology company based in Freiburg, Germany, specializing in the design and production of membrane-electrode assemblies (MEAs) for fuel cells and electrolyzers. The company was founded by researchers from Hahn-Schickard and the University of Freiburg with the goal of commercializing advanced MEA technology for hydrogen economy applications. Ionysis develops components for zero-emission fuel cells in heavy-duty mobility and electrolyzers for green hydrogen production, with a focus on eco-friendly, PFAS-free materials. The company has achieved significant technical milestones, including 1000-hour durability tests of AEM electrolysis cells with minimal degradation and development of high-temperature proton-exchange membrane fuel cell MEAs. As of 2024, Ionysis operates a state-of-the-art pilot coating line and serves over 50 customers across multiple European industries.