Composition effects of electrodeposited Cu-Ag nanostructured electrocatalysts for CO2 reduction
Plaza-Mayoral, Elena (University of Copenhagen. Department of Chemistry)
Okatenko, Valery (Ecole Polytechnique Fédérale de Lausanne)
Dalby, Kim Nicole (Topsoe (Dinamarca))
Falsig, Hanne (Topsoe (Dinamarca))
Chorkendorff, Ib (Technical University of Denmark. Department of Physics)
Sebastián-Pascual, Paula (University of Copenhagen. Department of Chemistry)
Escudero-Escribano, María (Institut Català de Nanociència i Nanotecnologia)

Date:	2024
Abstract:	The electrochemical carbon dioxide reduction (CO2RR) on Cu-based catalysts is a promising strategy to store renewable electricity and produce valuable C chemicals. We investigate the CORR on Cu-Ag nanostructures that have been electrodeposited in a green choline chloride and urea deep eutectic solvent (DES). We determine the electrochemically active surface area (ECSA) using lead underpotential deposition (UPD) to investigate the CO2RR intrinsic activity and selectivity. We show that the addition of Ag on electrodeposited Cu primarily suppresses the production of hydrogen and methane. While the production of carbon monoxide slightly increases, the partial current of the total C products does not considerably increase. Despite that the production rate of C is similar on Cu and Cu-Ag, the addition of Ag enhances the formation of alcohols and oxygenates over ethylene. We highlight the potential of metal electrodeposition from DES as a sustainable strategy to develop bimetallic Cu-based nanocatalysts for CO2RR.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	iScience, Vol. 27, Issue 6 (June 2024) , art. 109933, ISSN 2589-0042

DOI: 10.1016/j.isci.2024.109933
PMID: 38812548

18 p, 4.9 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles