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
Amination strategy to boost the CO2 electroreduction current density of M–N/C single-atom catalysts to the industrial application level
TL;DR: In this article, a generalized amination strategy was proposed to significantly increase the current density for CO production of M-N/C catalysts (M = Ni, Fe, Zn), achieving a remarkable CO partial current density of 450 mA cm−2 with a nearly 90% CO FE at a moderate overpotential of 0.89 V.
Journal ArticleDOI
A Robust, Scalable Platform for the Electrochemical Conversion of CO2 to Formate: Identifying Pathways to Higher Energy Efficiencies
Yingying Chen,Ashlee Vise,W. Ellis Klein,Firat C. Cetinbas,Deborah J. Myers,Wilson A. Smith,Wilson A. Smith,Todd G. Deutsch,Kenneth C. Neyerlin +8 more
TL;DR: In this paper, the authors demonstrated a robust, scalable cell architecture for electroreduction of CO2 (CO2R), achieving up to 90% faradaic efficiency for the conversion of CO 2 to formate at 500 mA/cm2.
Journal ArticleDOI
Cascade CO2 electroreduction enables efficient carbonate-free production of ethylene
Adnan Ozden,Yuhang Wang,Fengwang Li,Mingchuan Luo,Jared Sisler,Arnaud Thevenon,Alonso Rosas-Hernández,Thomas Burdyny,Yanwei Lum,Hossein Yadegari,Theodor Agapie,Jonas C. Peters,Edward H. Sargent,David Sinton +13 more
TL;DR: In this paper, a solid-oxide CO2-to-CO electrochemical cell (SOEC) with a CO-toC2H4 membrane electrode assembly (MEA) was proposed to reduce CO2 loss to carbonate.
Journal ArticleDOI
High Pressure Electrochemical Reduction of CO2 to Formic Acid/Formate: A Comparison between Bipolar Membranes and Cation Exchange Membranes
Mahinder Ramdin,Andrew R. T. Morrison,Mariëtte de Groen,Rien van Haperen,Robert de Kler,Leo J. P. van den Broeke,J. P. Martin Trusler,Wiebren de Jong,Thijs J. H. Vlugt +8 more
TL;DR: A high pressure semicontinuous batch electrolyzer is used to convert CO2 to formic acid/formate on a tin-based cathode using bipolar membranes (BPMs) and cation exchange membranes (CEMs).
Journal ArticleDOI
Morphology and mechanism of highly selective Cu(II) oxide nanosheet catalysts for carbon dioxide electroreduction.
Xingli Wang,Katharina Klingan,Malte Klingenhof,Tim Möller,Jorge Ferreira de Araújo,Isaac Martens,Alexander Bagger,Shan Jiang,Jan Rossmeisl,Holger Dau,Peter Strasser +10 more
TL;DR: In this article, the authors studied the activity and morphological evolution of 2D CuO nanosheets under applied electrode potentials to conclude the primacy of dendritic shapes and involvement of a new coupling pathway.
References
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