SKM 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 73: Metal Substrates: Adsorption and Reaction of Small Molecules II
O 73.5: Vortrag
Donnerstag, 30. März 2023, 11:30–11:45, CHE 91
Atomistic Insights at Au(111) / Deep Eutectic Solvents Interface using in situ STM — •Yannick Mattausch1, Areeg Abdelrahman1, Maren-Kathrin Heubach1, Ludwig A. Kibler1, and Timo Jacob1,2,3 — 1Institute of Electrochemistry, Ulm University, Ulm, Germany. — 2Helmholtz-Institute-Ulm (HIU), Ulm, Germany. — 3Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
Deep eutectic solvents (DESs) have outstanding electrochemical characteristics such as high electrochemical stability and conductivity.[1][2] Nonetheless, the interactions between the metal electrode surface and DESs besides their electrochemical behavior, like the electrolyte / Au(111) interface structure are still poorly understood. Recently, the electrochemical behavior and adsorption structures of Au(111) in Ethylenglycole / Cholinchloride (2:1) have been studied, including an ordered chloride structure at 0.1 V vs. Pt and the potential induced surface reconstruction of Au(111).[3] Here, we go a step further by changing the electrolyte composition and studying its influence on the electrochemical behavior as well as the dynamics at the electrode-electrolyte interface at an atomistic level. To reach this aim, in situ scanning tunneling microscopy (STM) is employed to observe morphological changes at the electrode surface in real time and space.
[1] Smith, E. L., Abbott, A. P. Ryder, K. S., Chem. Rev. 114, 11060–11082 (2014). [2] Abbott, A. P., D’Agostino, C., Davis, S. J., Gladden, L. F. Mantle, M. D. Chem. Chem. Phys. 18, 25528–25537 (2016). [3] Tan, Z. et al., ChemElectroChem 7, 4601–4605 (2020).