Project Details


Alkaline electrolysis is currently the most mature and cost-effective method to produce “Green Hydrogen” out of renewable energy sources. In novel type of these electrolyzers with the “zero gap” design, both catalyst layers are in contact with the membrane of the cell. Disadvantages are the large observed temperature gradients across such an electrolyzer which also may lead to “hot spots” in regions where the product gases may accumulate, causing loss in performance and enhanced degradation.
The goal of the project is to obtain fundamental understanding of the multi-phase flow, heat and mass transfer in an alkaline electrolyzer. Employing the methods of computational fluid dynamics, a state-of-the-art model will be developed that will provide insight into the behaviour of gas bubbles as well as the temperature and velocity profiles. The model is also expected to predict how the cell design and material properties as catalyst layers influence the current density distribution and how the polarization curve of the electrolysis cell is affected in order to guarantee a high operating efficiency.

Funding: EUDP
Effective start/end date15/04/202214/04/2025


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