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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Supramolecular Engineering to Improve Electrocatalytic CO 2 Reduction Activity of Cu 2 O
TL;DR: In this paper, cuprous oxide (Cu2 O) modified by cucurbit[6]urils (Q[6]), a kind of rigid macromolecule, is found to act as an efficient supramolecular inorganic nanocomposite catalyst for the electrochemical CO2 reduction reaction (CO2 RR) to C1 fuels.
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Self-Supported Nickel Single Atoms Overwhelming the Concomitant Nickel Nanoparticles Enable Efficient and Selective CO2 Electroreduction
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Hydrogenomics: Efficient and Selective Hydrogenation of Stable Molecules Utilizing Three Aspects of Hydrogen
Katsuyuki Fukutani,Katsuyuki Fukutani,Jun Yoshinobu,Miho Yamauchi,Miho Yamauchi,T. Shima,S. Orimo +6 more
TL;DR: In this paper, the authors discuss the fundamental concepts behind the reactions and possible control of the efficient and selective hydrogenation reactions and discuss a promising strategy to make full use of these active hydrogen species for hydrogenation of stable molecules and achieve chemical transformation of these molecules.
Journal ArticleDOI
Electrochemical CO2 reduction on sub-microcrystalline boron-doped diamond electrodes
TL;DR: In this paper, the authors presented an analysis of electrochemical CO2 reduction using sub-micro-crystalline (SMC) BDD electrodes with different boron doping concentrations (0.28, 0.11%, and 0.03%).
Journal ArticleDOI
Microenvironment Engineering for the Electrocatalytic CO <sub>2</sub> Reduction Reaction
TL;DR: In this article , the authors present a comprehensive overview of recent research progress in electrocatalytic CO2 reduction reaction (eCO2RR) and discuss the relevant factors affecting the catalytic performance.
References
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