Journal article
Implications of Surface Strain for Enhanced Carbon Dioxide Reduction on Copper-Silver Alloys
Journal of the Electrochemical Society, Vol.167(12), p.126509
08/28/2020
DOI: 10.1149/1945-7111/abaf74
Abstract
The electrochemical reduction of atmospheric carbon dioxide to value added chemicals and fuels using renewable energy is a promising route to a sustainable economy. In this work we present results from the electrochemical reduction of carbon dioxide on copper/silver alloy electrodes alongside pure copper and pure silver in acetonitrile-water electrolyte mixtures. EIS measurements show that the copper/silver alloys exhibit lower charge-transfer resistance when compared to the pure metal electrodes. Reduced product analysis identifies carbon monoxide (CO) as the major product on pure Ag, Ag with alloyed with 10% Cu, and Cu alloyed with 10% Ag with Faradaic efficiencies over 60%. Formate is the major reduced product close to the 50:50 (Cu:Ag) ratio with Faradaic efficiencies exceeding 30%. Our results suggest that changes in the metallic lattice and structural strain of the bimetallic electrodes influences reduced product selectivity.
Details
- Title: Subtitle
- Implications of Surface Strain for Enhanced Carbon Dioxide Reduction on Copper-Silver Alloys
- Creators
- Amanuel Hailu - University of Iowa Department of Chemistry, Iowa City, Iowa 52241, United States of AmericaScott K Shaw - University of Iowa Department of Chemistry, Iowa City, Iowa 52241, United States of America
- Resource Type
- Journal article
- Publication Details
- Journal of the Electrochemical Society, Vol.167(12), p.126509
- Publisher
- IOP Publishing
- DOI
- 10.1149/1945-7111/abaf74
- ISSN
- 0013-4651
- eISSN
- 1945-7111
- Number of pages
- 6
- Grant note
- The University of Iowa
- Language
- English
- Date published
- 08/28/2020
- Academic Unit
- Chemistry
- Record Identifier
- 9984066346202771
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