Probing the Active Surface Sites for CO Reduction on Oxide-Derived Copper Electrocatalysts
Technical University of Denmark · Stanford University · +1 more institution
Abstract
CO electroreduction activity on oxide-derived Cu (OD-Cu) was found to correlate with metastable surface features that bind CO strongly. OD-Cu electrodes prepared by H2 reduction of Cu2O precursors reduce CO to acetate and ethanol with nearly 50% Faradaic efficiency at moderate overpotential. Temperature-programmed desorption of CO on OD-Cu revealed the presence of surface sites with strong CO binding that are distinct from the terraces and stepped sites found on polycrystalline Cu foil. After annealing at 350 °C, the surface-area corrected current density for CO reduction is 44-fold lower and the Faradaic efficiency is less than 5%. These changes are accompanied by a reduction in the proportion of strong CO…
Citation impact
- FWCI
- 14.75
- Percentile
- 100%
- References
- 26
Authors
9Topics & keywords
- Chemistry
- Copper
- Reduction (mathematics)
- Oxide
- Chemical reduction
- Copper oxide
- Inorganic chemistry
- Electrochemistry
Funding
- NSNational Science FoundationAwards: 1266401, DE-AC52-07NA27344
- UDU.S. Department of EnergyAward: AC52-07NA27344
- NRNational Research Foundation
- SNSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- DGDanmarks GrundforskningsfondAward: DNRF54
- DODivision of ChemistryAward: CHE-1266401
- BEBasic Energy SciencesAwards: SCW0939, DE-AC52-07NA27344, FWP #SCW0939
- AFAir Force Office of Scientific ResearchAwards: FA9550-14-1-0132, DE-AC52-07NA27344
- LLLawrence Livermore National LaboratoryAwards: DE-AC52-07NA27344, AC52-07NA27344
- DODivision of Materials Sciences and Engineering