Moritz Geuß

PhD Student

To achieve a broad market introduction of proton exchange membrane water electrolyzers (PEMWEs) for the production of green hydrogen, the cost of the single stacks still has to be reduced. Due to the harsh conditions during operation, mostly scarce platinum group metals (PGMs) are used as anode catalysts. By decreasing the amount of used PGMs per stack, the total costs could be reduced greatly, but the activity and stability of the catalysts currently limit the minimum amount necessary.

The scope of my research is to investigate the Oxygen evolution reaction (OER) performance of different supported Ir-oxide catalysts. To close the huge gap between dissolution measured in aqueous model systems and more applied membrane electrode assemblies (MEAs), a gas diffusion electrode (GDE) setup for measuring OER will be developed. Additionally, dissolution will be studied using the well-developed scanning flow cell (SFC) coupled to online mass-spectrometry and identical location transmission electron microscopy (IL-TEM).


2018- 2020 M.Sc. in Chemical and Biological Engineering at FAU Erlangen-Nürnberg. Master thesis: Evaluation and optimization of Pt-alloy cathode catalyst layers for PEMFC applications using gas diffusion electrodes
2013- 2017 B.Sc. in Chemical Engineering – Sustainable Chemical Technologies at FAU Erlangen-Nürnberg. Bachelor Thesis: Pyrene as a potential precursor for closing defects in zeolite beta membranes