SKM 2023 – wissenschaftliches Programm

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TUT: Tutorien

TUT 4: Strategic elements and sustainability (joint session MA/TUT)

TUT 4.3: Hauptvortrag

Sonntag, 26. März 2023, 17:00–17:30, HSZ 04

Design strategies for electrocatalysts -- an electrochemist's perspective — •Kristina Tschulik — Ruhr-Universität Bochum, Faculty for Chemistry and Biochemistry, Chair for Electrochemistry and Nanoscale Materials — Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf

The aim to produce highly active, selective, and long-lived electrocatalysts by design drives major research efforts toward gaining fundamental understanding of the relationship between material properties and their catalytic performance. Surface characterization tools enable to assess atomic scale information on the complexity of electrocatalyst materials. Advancing electrochemical methodologies to adequately characterize such systems was less of a research focus point. In this tutorials, we shed light on the ability to gain fundamental insights into electrocatalysis and establish design strategies based on these. Concepts on how to improve mass transport, e.g. by exploiting magnetic fields are highlighted in this respect. Particular attention is paid to deriving design strategies for nanoelectrocatalysts, which is often impeded, as structural and physical material properties are buried in electrochemical data of whole electrodes. Thus, a second major approach focuses on overcoming this difference in the considered level of complexity by methods of single-entity electrochemistry. The gained understanding of intrinsic catalyst performance will ultimately allow us to advance design concepts to transforming "pre-catalysts" in the forseeable future.