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
Boosting the Productivity of Electrochemical CO2 Reduction to Multi-Carbon Products by Enhancing CO2 Diffusion through Porous Organic Cage.
Chunjun Chen,Xupeng Yan,Yahui Wu,Shoujie Liu,Xiudong Zhang,Xiaofu Sun,Qinggong Zhu,Haihong Wu,Buxing Han +8 more
TL;DR: In this article , a strategy to enhance the productivity of CO2 electroreduction by using porous organic cages (POCs) as an additive was proposed. But, the commercialization is limited by the low productivity.
Journal ArticleDOI
Glycerol Oxidation Pairs with Carbon Monoxide Reduction for Low-Voltage Generation of C2 and C3 Product Streams
Hossein Yadegari,Adnan Ozden,Tartela Alkayyali,Vikram Soni,Arnaud Thevenon,Alonso Rosas-Hernández,Theodor Agapie,Jonas C. Peters,Edward H. Sargent,David Sinton +9 more
Journal ArticleDOI
Formate-Selective CO2 Electrochemical Reduction with a Hydrogen-Reduction-Suppressing Bronze Alloy Hollow-Fiber Electrode.
TL;DR: Cu-Sn 45% hollow fiber, the optimal catalyst in this work, achieved a highest faradaic efficiency (FE) towards formate of 90.96% at a lower potential of -0.75 V vs. RHE than most non-noble catalysts and the FE of H 2 was below 4%.
Journal ArticleDOI
Laser-fabricated channeled Cu6Sn5/Sn as electrocatalyst and gas diffusion electrode for efficient CO2 electroreduction to formate
TL;DR: In this paper , the authors synthesize Cu 6 Sn 5 alloy on Sn foil and gas diffusion electrode (GDE) using laser irradiation, which exhibits high formate faradaic efficiency (FE formate ) of 87.2% and remains stable at 28.69 mA cm −2 over 14 h.
Journal ArticleDOI
Non-peripheral octamethyl-substituted cobalt phthalocyanine nanorods supported on N-doped reduced graphene oxide achieve efficient electrocatalytic CO2 reduction to CO
Minzhang Li,Chunliu Yan,Rajendran Ramachandran,Yangchun Lan,Hao Dai,Haiquan Shan,Xiangchao Meng,Dehu Cui,Fei Wang,Fei Wang,Zong-Xiang Xu +10 more
TL;DR: In this article, the eight methyl groups on cobalt phthalocyanine significantly improved its catalytic CO2 reduction performance, and the N-CoMe2Pc nanorods and nitrogen-doped reduced graphene oxide (NRGO) nanocomposites were successfully prepared by a facile, noncovalent immobilization strategy.
References
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Journal ArticleDOI
Generalized Gradient Approximation Made Simple
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Journal ArticleDOI
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points
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A grid-based Bader analysis algorithm without lattice bias
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