DITF: Reinforced membranes for electrolyzers

Reinforced membranes for electrolyzers


Regenerative energies are representative of the energy turnaround. However, it is also important to have ways of storing the energy generated. Water electrolysis could be a key technology. Hydrogen is a secondary energy carrier that enables efficient energy storage due to its high energy density.

In the joint research project “Electrolysis made in Baden-Württemberg”, the DITF are participating in the construction of a state-of-the-art electrolyzer for alkaline water electrolysis, which will serve to transfer technology to industry. The project is coordinated by the Center for Solar Energy and Hydrogen Research (ZSW), which will build the demonstrator with an electrical output of one megawatt. The task of the DITF is to develop and manufacture nonwoven-reinforced membranes for the electrolysis cell.
As part of the research project, membranes made of polymers are being produced at the DITF that are modified and thus precisely tailored to their task. The membranes exhibit excellent electrochemical properties. They are chemically stable in an alkaline environment, i.e. under the conditions that prevail inside the electrolytic cell. The membranes should also have good long-term stability. This means that they work almost faultlessly even under continuous stress. The membranes are inexpensive to manufacture and use.

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