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
Theory-Guided Enhancement of CO2 Reduction to Ethanol on Ag–Cu Tandem Catalysts via Particle-Size Effects
Journal ArticleDOI
Boost CO2 Electroreduction towards C2+ Products via CO* Intermediate Manipulation on Copper-based Catalysts
Kai-xiong Xiang,Fenghua Shen,Lin Wu,Zhujiang Wang,Huimin Yi,Xudong Liu,Pingshan Wang,Min Liu,Zhang Lin,Hui Liu +9 more
TL;DR: The global warming problem due to greenhouse gases (GHGs), mainly CO2, appears to be a serious concern in our global society as mentioned in this paper , and Electrocatalytic CO2 conversion provides an environment-friendly approach to reduce the CO2 emissions.
Journal ArticleDOI
The integration of bio-catalysis and electrocatalysis to produce fuels and chemicals from carbon dioxide.
Xinyi Tan,Jens Nielsen +1 more
TL;DR: The integration of bio-catalysis and electrocatalysis (bio-electrocatalysis) provides such a promising avenue to convert CO2 into fuels and chemicals with high-chain lengths as discussed by the authors .
Journal ArticleDOI
The low overpotential regime of acidic water oxidation part I: the importance of O2 detection
Søren Bertelsen Scott,Reshma R. Rao,Choong Man Moon,Jakob Ejler Sørensen,Jakob Kibsgaard,Yang Shao-Horn,Ib Chorkendorff +6 more
TL;DR: In this article , the authors used mass spectrometry to obtain accurate OER activity measurements spanning six orders of magnitude on a model series of ruthenium-based catalysts in acidic electrolyte, quantifying electrocatalytic O2 production at potential as low as 1.30 VRHE.
Journal ArticleDOI
Zero-Gap Electrochemical CO2 Reduction Cells: Challenges and Operational Strategies for Prevention of Salt Precipitation
TL;DR: In this paper , the authors discuss the mechanisms for salt formation in CO2 reduction membrane electrode assemblies and link these approaches to the solubility limit of potassium carbonate within the electrolyzer and describe how each strategy separately manipulates water, potassium, and carbonate concentrations to prevent or mitigate salt formation.
References
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