Influence of Support Material on the Structural Evolution of Copper during Electrochemical CO2 Reduction

• DOI: 10.1002/celc.202200924
• Publication Date: 2023-01-04T02:10:47Z
• Authors: Ezra S. Koh; Simon Geiger; Alexander Gunnarson; Timo Imhof; Gregor M. Meyer; Paul Paciok; Bastian J. M. Etzold; Marcus Rose; Ferdi Schüth; Marc Ledendecker
• Keywords: Coalescence (physics)

Abstract The copper‐catalyzed electrochemical CO 2 reduction reaction represents an elegant pathway to reduce emissions while producing a wide range of valuable hydrocarbons. selectivity for these products depends strongly on the structure and morphology copper catalyst. However, continued deactivation during catalysis alters obtained product spectrum. In this work, we report stabilizing effect three different carbon supports with unique pore structures. influence stability was examined by high‐angle annular dark field scanning transmission electron microscopy gas chromatography measurements in micro‐flow cell. Supporting particles into confined space found increase barrier particle agglomeration 20 h chronopotentiometry at 100 mA cm −2 resembling long‐term conditions. We propose catalyst design preventing coalescence harsh conditions, exemplarily demonstrated electrocatalytic reduction. With provide important insights stable electrocatalysts that can potentially be applied applications.