WW Kolloquium: Prof. Dr. Olga Kasian - Towards a comprehensive understanding of electrocatalysts' stability at the atomic scale
Prof. Dr. Olga Kasian (in Präsenz)
Department of Materials Science and Engineering, I-MEET, FAU, and Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI ERN)
Towards a comprehensive understanding of electrocatalysts‘ stability at the atomic scale
Electrochemistry plays a pivotal role in our future transition to sustainable energy, particularly for the conversion of electrical into chemical energy in electrolyzers, and the reverse conversion and utilization of the stored energy in batteries and fuel cells. The common challenge in these electrochemical devices is the development of active and durable materials for the catalysis. The main prerequisite for the rational design of catalysts with superior performance is an overall understanding of the related processes and mechanisms occurring under the operation conditions. A promising strategy to develop such understanding is the investigation of the impact of material composition on reaction rate and on catalyst stability under the conditions of operation, ideally with the application of complementary techniques for the investigation of catalyst structure at the atomic scale. In this talk the interplay between the atomic scale structure of catalyst materials and their stability will be discussed. Special focus will be placed on the temporal evolution of the topmost atomic layers of model catalysts induced by electrochemical reactions and possible strategies for stabilization of active species at the catalytic surfaces.