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O: Fachverband Oberflächenphysik

O 7: New Methods and Developments 1: Scanning Probe Techniques 1 (joint session O/KFM)

O 7.1: Topical Talk

Monday, September 5, 2022, 10:30–11:00, S053

Identification of active electrocatalytic centers using EC- STM under reaction conditions — •Aliaksandr Bandarenka — Technical University of Munich, Department of Physics, James- Franck-Str 1, 85748 Garching bei München, Germany

Identification of so-called active electrocatalytic centres can be very complicated under reaction conditions. In many cases, electrochemical scanning tunnelling microscopy can be efficiently used to do so by comparing the tunnelling noise in the presence and the absence of the electrocatalytic reactions. I the presentation, I will discuss examples, which deal with finding the active sites at the surface of various electrodes for hydrogen evolution, oxygen reduction, and oxygen evolution reactions. Pt, HOPG, Pt-alloys, and transition metal oxides are used as the model systems.