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
Electrooxidation of saturated C1-C3 primary alcohols on platinum: Potential-resolved product analysis with electrochemical real-time mass spectrometry (EC-RTMS)
Peyman Khanipour,Peyman Khanipour,Sandra Haschke,Julien Bachmann,Karl Johann Jakob Mayrhofer,Karl Johann Jakob Mayrhofer,Ioannis Katsounaros +6 more
TL;DR: In this paper, the authors provide details on the interpretation of data for electrochemical real-time mass spectrometry (EC-RTMS) and on the assignment of mass signals to reaction products by studying three model reactions.
Journal ArticleDOI
Microenvironments of Cu Catalyst in Zero-gap Membrane Electrode Assembly for Efficient CO2 Electrolysis to C2+ Products
W. Choi,Yongjun Choi,Eun Mi Choi,Hyewon Yun,Won-Cheol Seongdong-ku Jung,Woong Lee,Hyung Suk Oh,Da Hye Won,Jong Seung Na,Yun Jeong Hwang +9 more
TL;DR: A zero-gap membrane-electrode assembly (MEA) electrolyzer is a promising design for electrochemical CO2 reduction reactions (eCO2RR) where gaseous CO2 is directly fed without catholyte.
Journal ArticleDOI
Electrochemical C-N coupling of CO2 and nitrogenous small molecules for the electrosynthesis of organonitrogen compounds.
Xianyun Peng,Libin Zeng,Dashuai Wang,Zhibin Liu,Yan Li,Zhongjian Li,Bin Yang,Lecheng Lei,Liming Dai,Yanglong Hou +9 more
TL;DR: In this paper , a comprehensive review on the electrosynthesis of high value-added organonitrogens from the abundant CO2 and nitrogenous small molecules (N2, NO, NO2-, NO3-, NH3), together with the current challenges and future opportunities are discussed.
Journal ArticleDOI
Reviewing the impact of halides on electrochemical CO 2 reduction
TL;DR: A comprehensive review of the role and mechanism of halide ions in the CO 2 reduction reaction can help better guide the future design of efficient electrocatalysts as discussed by the authors .
Journal ArticleDOI
Electrochemical CO2 Reduction on Polycrystalline Copper by Modulating Proton Transfer with Fluoropolymer Composites
TL;DR: In this paper , a 15 μm Nafion overlayer was used to control proton transfer in an acetonitrile/bicarbonate electrolyte, resulting in a higher yield of total carbon-containing products than an analogous unmodified Cu electrode.
References
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