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

Koh ES, Geiger S, Gunnarson A, Imhof T, Meyer GM, Paciok P, Etzold BJ, Rose M, Schüth F, Ledendecker M (2023)

Publication Type: Journal article

Publication year: 2023

Journal

ChemElectroChem Wiley

Book Volume: 10

Article Number: e202200924

Journal Issue: 5

DOI: 10.1002/celc.202200924

Abstract

The copper-catalyzed electrochemical CO2 reduction reaction represents an elegant pathway to reduce CO2 emissions while producing a wide range of valuable hydrocarbons. The selectivity for these products depends strongly on the structure and morphology of the copper catalyst. However, continued deactivation during catalysis alters the obtained product spectrum. In this work, we report on the stabilizing effect of three different carbon supports with unique pore structures. The influence of pore structure on stability and selectivity was examined by high-angle annular dark field scanning transmission electron microscopy and gas chromatography measurements in a micro-flow cell. Supporting particles into confined space was found to increase the barrier for particle agglomeration during 20 h of chronopotentiometry measurements at 100 mA cm−2 resembling long-term CO2 reduction conditions. We propose a catalyst design preventing coalescence and agglomeration in harsh electrochemical reaction conditions, exemplarily demonstrated for the electrocatalytic CO2 reduction. With this work, we provide important insights into the design of stable CO2 electrocatalysts that can potentially be applied to a wide range of applications.

Authors with CRIS profile

Bastian Etzold

Involved external institutions

Technische Universität Darmstadt DE Germany (DE) Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE) Max-Planck-Institut für Kohlenforschung (MPI KoFo) / Max Planck Institute for Coal Research DE Germany (DE) Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Koh, E.S., Geiger, S., Gunnarson, A., Imhof, T., Meyer, G.M., Paciok, P.,... Ledendecker, M. (2023). Influence of Support Material on the Structural Evolution of Copper during Electrochemical CO2 Reduction. ChemElectroChem, 10(5). https://doi.org/10.1002/celc.202200924

MLA:

Koh, Ezra S., et al. "Influence of Support Material on the Structural Evolution of Copper during Electrochemical CO2 Reduction." ChemElectroChem 10.5 (2023).

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