SKM 2021 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Poster Session III

CPP 8.20: Poster

Mittwoch, 29. September 2021, 17:30–19:30, P

Investigation of Au(100) and Au(110) surfaces in electrolyte by Reflection Anisotropy Spectroscopy (RAS) — •Mario Löw1, Margot Guidat1, Timothée Gômes1,2, Jongmin Kim1, and Matthias M. May11Ulm University, Institute of Theoretical Chemistry, D-89081 Ulm — 2Chimie Paristech - PSL, F-75005 Paris

Rechargeable magnesium batteries will probably play a huge role in the future of the battery market. However, there is until now no standard cathode material, like for lithium ion batteries. One possible material could be the porphyrin molecule CuDEPP.[1]

To get a deeper knowledge on how the structure of this molecule changes while applying a voltage, its adsorption on the well-ordered Au-surfaces is studied by Reflection Anisotropy Spectroscopy (RAS). This technique allows to investigate the structure of the interface while applying potentials in the electrolyte.

As a starting point for this investigation, we first establish the surface of the well-ordered Au-surface with RAS (in electrolyte) as a reference. Then we relate this spectra to electronic structure models via computational spectroscopy to understand chemical and physical processes that occur at the electrochemical double layer. Here, we show first results employing the approach.

[1] Abouzari-Lotf, Ebrahim, et al. ChemSusChem 14.8 (2021): 1840-1846.

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