Journal ArticleDOI
CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface
Cao-Thang Dinh,Thomas Burdyny,Golam Kibria,Ali Seifitokaldani,Christine M. Gabardo,F. Pelayo García de Arquer,Amirreza Kiani,Jonathan P. Edwards,Phil De Luna,Oleksandr S. Bushuyev,Chengqin Zou,Chengqin Zou,Rafael Quintero-Bermudez,Yuanjie Pang,David Sinton,Edward H. Sargent +15 more
TLDR
A copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO2 to ethylene with 70% faradaic efficiency at a potential of −0.55 volts versus a reversible hydrogen electrode (RHE).Abstract:
Carbon dioxide (CO 2 ) electroreduction could provide a useful source of ethylene, but low conversion efficiency, low production rates, and low catalyst stability limit current systems. Here we report that a copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO 2 to ethylene with 70% faradaic efficiency at a potential of −0.55 volts versus a reversible hydrogen electrode (RHE). Hydroxide ions on or near the copper surface lower the CO 2 reduction and carbon monoxide (CO)–CO coupling activation energy barriers; as a result, onset of ethylene evolution at −0.165 volts versus an RHE in 10 molar potassium hydroxide occurs almost simultaneously with CO production. Operational stability was enhanced via the introduction of a polymer-based gas diffusion layer that sandwiches the reaction interface between separate hydrophobic and conductive supports, providing constant ethylene selectivity for an initial 150 operating hours.read more
Citations
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Journal ArticleDOI
High-Pressure CO Electroreduction at Silver Produces Ethanol and Propanol.
TL;DR: In this article, the authors investigated CO reduction at higher surface coverage (by increasing pressure) to ascertain if desorption effects can explain the discrepancy between density functional theory (DFT) and experimental results (ethanol vs no ethanol).
Journal ArticleDOI
Three-Dimensional Cathodes for Electrochemical Reduction of CO2: From Macro- to Nano-Engineering.
Shiqiang Rob Hui,Nima Shaigan,Vladimir Neburchilov,Lei Zhang,Kourosh Malek,Michael Eikerling,Phil De Luna +6 more
TL;DR: This work reviews the latest developments in experimental and modeling studies of three-dimensional cathodes towards high-performance electrochemical reduction of CO2, and the fabrication–microstructure–performance relationships of electrodes are examined from the macro- to nanoscale.
Journal ArticleDOI
Efficient and Selective Interplay Revealed: CO2 Reduction to CO over ZrO2 by Light with Further Reduction to Methane over Ni0 by Heat Converted from Light
TL;DR: In this paper, the reaction mechanism of CO2 photoreduction into methane was elucidated by time-course monitoring of the mass chromatogram, in situ FTIR spectroscopy, and in situ extended X-ray absorption fine structure (EXAFS).
Journal ArticleDOI
Reaction Selectivity for Plasmon-Driven Carbon Dioxide Reduction on Silver Clusters: A Theoretical Prediction
TL;DR: In this paper, density functional theory is employed to investigate the plasmon-driven CO2 reduction at the active sites of metallic silver clusters, and the results predict that CO2 prefers to adsorb at the bridge s...
Journal ArticleDOI
Electrocatalytic conversion of CO2 to hydrocarbon and alcohol products: Realities and prospects of Cu-based materials
Kayode Adesina Adegoke,Kayode Adesina Adegoke,Rhoda Oyeladun Adegoke,Asiata Omotayo Ibrahim,Samson Ademola Adegoke,Olugbenga Solomon Bello,Olugbenga Solomon Bello +6 more
TL;DR: In this article, the expectation, reality of the mechanism on Cu electrodes and its prospect to convert CO2 to aldehydes, hydrocarbon and alcohol products by a way of utilizing CO2 for industrial feedstocks.
References
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