Tailoring Copper Foam with Silver Dendrite Catalysts for Highly Selective Carbon Dioxide Conversion into Carbon Monoxide
Urbain, Félix (Institut de Recerca en Energia de Catalunya)
Tang, PengYi (Institut Català de Nanociència i Nanotecnologia)
Carretero González, Nina Magali (Institut de Recerca en Energia de Catalunya)
Andreu, Teresa (Institut de Recerca en Energia de Catalunya)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)

Date:	2018
Abstract:	The present study outlines the important steps to bring electrochemical conversion of carbon dioxide (CO ) closer to commercial viability by using a large-scale metallic foam electrode as a highly conductive catalyst scaffold. Because of its versatility, it was possible to specifically tailor three-dimensional copper foam through coating with silver dendrite catalysts by electrodeposition. The requirements of high-yield CO conversion to carbon monoxide (CO) were met by tuning the deposition parameters toward a homogeneous coverage of the copper foam with nanosized dendrites, which additionally featured crystallographic surface orientations favoring CO production. The presented results evidence that Ag dendrites, owing a high density of planes with stepped (220) surface sites, paired with the superior active surface area of the copper foam can significantly foster the CO productivity. In a continuous flow-cell reactor setup, CO Faradaic efficiencies reaching from 85 to 96% for a wide range of low applied cathode potentials (<1. 0 V ) along with high CO current densities up to 27 mA/cm were achieved, far outperforming other tested scaffold materials. Overall, this research provides new strategic guidelines for the fabrication of efficient and versatile cathodes for CO conversion compatible with large-scale integrated prototype devices.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1246 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Ministerio de Economía y Competitividad FJCI-2016-29147 Ministerio de Economía y Competitividad ENE2017-85087 Ministerio de Economía y Competitividad MAT2014-59961 Ministerio de Economía y Competitividad ENE2016-80788-C5-5-R Ministerio de Economía y Competitividad SEV-2013-0295
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Electrodes ; Catalysts ; Deposition ; Foams ; Dendrons
Published in:	ACS applied materials & interfaces, Vol. 10, Issue 50 (December 2018) , p. 43650-43660, ISSN 1944-8252

DOI: 10.1021/acsami.8b15379

Postprint 27 p, 1.7 MB

The record appears in these collections:
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