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
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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
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Recent Development of Electrocatalytic CO2 Reduction Application to Energy Conversion
TL;DR: A clear and innovative insight is provided into the entire reaction process of CRR, guiding the new electrocatalysts design, state-of-the-art analysis technique application, and reaction system innovation.
Journal ArticleDOI
Two-step electrochemical reduction of CO2 towards multi-carbon products at high current densities
N.S. Romero Cuellar,N.S. Romero Cuellar,Christian Scherer,Christian Scherer,B. Kaçkar,W. Eisenreich,C. Huber,Kerstin Wiesner-Fleischer,Maximilian Fleischer,Olaf Hinrichsen +9 more
TL;DR: In this article, two-step electrochemical reduction of CO2 is investigated as an alternative to increase selectivity towards C2 and C3 products in a cascade electrocatalytic operation, where CO is produced in a first step and subsequently reduced to multi-carbon products with significantly higher Faradaic efficiencies compared to a one-step process.
Journal ArticleDOI
Rational Design of Novel Catalysts with Atomic Layer Deposition for the Reduction of Carbon Dioxide
Journal ArticleDOI
Design Strategies for Markedly Enhancing Energy Efficiency in Electrocatalytic CO2 Reduction Reaction
TL;DR: In this paper , the authors proposed a promising approach to ameliorate the global warming and energy crisis by using electrocatalytic CO2 reduction reaction (CO2RR).
Journal ArticleDOI
Revealing the Predominant Surface Facets of Rough Cu Electrodes under Electrochemical Conditions
TL;DR: In this article, metal electrodes with rough surfaces are often found to convert CO or CO2 to hydrocarbons and oxygenates with high selectivity and at high reaction rates in comparison with their smooth counterpart.
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