Cited by 852CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

Nanoporous Copper–Silver Alloys by Additive-Controlled Electrodeposition for the Selective Electroreduction of CO2 to Ethylene and Ethanol

Hoang, Thao T. H., Verma, Sumit, Ma, Sichao, Fister, Tim T., Timoshenko, Janis, Frenkel, Anatoly I., Kenis, Paul J. A., Gewirth, Andrew A.·2018·Journal of the American Chemical Society

Abstract

Electrodeposition of CuAg alloy films from plating baths containing 3,5-diamino-1,2,4-triazole (DAT) as an inhibitor yields high surface area catalysts for the active and selective electroreduction of CO 2 to multicarbon hydrocarbons and oxygenates. EXAFS shows the co-deposited alloy film to be homogeneously mixed. The alloy film containing 6% Ag exhibits the best CO 2 electroreduction performance, with the Faradaic efficiency for C 2 H 4 and C 2 H 5 OH production reaching nearly 60 and 25%, respectively, at a cathode potential of just −0.7 V vs RHE and a total current density of ∼ – 300 mA/cm 2 . Such high levels of selectivity at high activity and low applied potential are the highest reported to date. In situ Raman and electroanalysis studies suggest the origin of the high selectivity toward C 2 products to be a combined effect of the enhanced stabilization of the Cu 2 O overlayer and the optimal availability of the CO intermediate due to the Ag incorporated in the alloy.

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Crossref · 10.1021/jacs.8b01868

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Authors
Hoang, T. T. H., Verma, S., Ma, S., Fister, T. T., Timoshenko, J., Frenkel, A. I., Kenis, P. J. A., & Gewirth, A. A.
Affiliations
  • University of Illinois Urbana-Champaign (US)
  • Kyushu University (JP)
  • Argonne National Laboratory (US)
  • Stony Brook University (US)
Corresponding author
Gewirth, Andrew A.
Venue
Journal of the American Chemical Society
Published
2018-04-05
Volume
140
Issue
17
Pages
5791-5797
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2795676722
Cited by
852
References
61
Citations by year
2026: 57 · 2025: 99 · 2024: 121 · 2023: 100 · 2022: 128 · 2021: 125 · 2020: 117 · 2019: 78 · 2018: 27
FWCI
20.06
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American Chemical Society (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Division of Chemistry (CHE-1309731)
  • Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
Keywords
silver-copper alloys, nanoporous films, electrochemical CO2 reduction, ethylene production, ethanol production, 3,5-diamino-1,2,4-triazole, Faradaic efficiency, CO intermediate, alloy catalysts, EXAFS, in situ Raman spectroscopy

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