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
Electrochemical CO2 Reduction: Tailoring Catalyst Layers in Gas Diffusion Electrodes
Kai junge Puring,Daniel Siegmund,Jana Timm,Florian Möllenbruck,Steffen Schemme,Roland Marschall,Ulf-Peter Apfel +6 more
Journal ArticleDOI
Electroenzymatic CO2 Fixation Using Redox Polymer/Enzyme-Modified Gas Diffusion Electrodes
Julian Szczesny,Adrian Ruff,Ana Rita Oliveira,Marcos Pita,Inês A. C. Pereira,Antonio L. De Lacey,Wolfgang Schuhmann +6 more
TL;DR: In this article, the fabrication of gas diffusion electrodes modified with polymer/enzyme layers for electroenzymatic CO2 fixation is described, using a metal-free organic low-potential viologen-modified polymer.
Journal ArticleDOI
Synergized Cu/Pb Core/Shell Electrocatalyst for High-Efficiency CO2 Reduction to C2+ Liquids.
Pengtang Wang,Pengtang Wang,Hao Yang,Yong Xu,Xiaoqing Huang,Xiaoqing Huang,Juan Wang,Miao Zhong,Tao Cheng,Qi Shao,Qi Shao +10 more
TL;DR: In this article, the authors demonstrate that the strong synergy between Cu core and ultrathin lead (Pb) shell (0.7 nm) in the Cu/Pb core/shell nanocrystals significantly boosts the electrocatalytic reduction of CO2 toward C2+ products (products with at least two carbon atoms).
Journal ArticleDOI
A systematic analysis of Cu-based membrane-electrode assemblies for CO2 reduction through multiphysics simulation
TL;DR: In this paper, the performance of a copper-based membrane-electrode assembly (Cu-MEA) was investigated for the reduction of CO2 to C2+ products, while maintaining high current densities.
Journal ArticleDOI
Advanced manufacturing for electrosynthesis of fuels and chemicals from CO2
Daniel Corral,Daniel Corral,Jeremy T. Feaster,Sadaf Sobhani,Joshua R. Deotte,Dong Un Lee,Andrew A. Wong,Julie Hamilton,Victor A. Beck,Amitava Sarkar,Amitava Sarkar,Christopher Hahn,Thomas F. Jaramillo,Thomas F. Jaramillo,Sarah E. Baker,Eric B. Duoss +15 more
TL;DR: In this article, the authors demonstrate AM for rapid development and testing for improved performance for the carbon dioxide reduction reaction across an evolution of vapor-fed reactor designs, and define a dimensionless number to identify mass transport regimes by exploring the impact of hypothesized underlying mass transport mechanisms.
References
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Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
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Journal ArticleDOI
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Stephanie A. Nitopi,Erlend Bertheussen,Søren Bertelsen Scott,Xinyan Liu,Albert K. Engstfeld,Albert K. Engstfeld,Sebastian Horch,Brian Seger,Ifan E. L. Stephens,Ifan E. L. Stephens,Karen Chan,Karen Chan,Christopher Hahn,Christopher Hahn,Jens K. Nørskov,Jens K. Nørskov,Jens K. Nørskov,Thomas F. Jaramillo,Thomas F. Jaramillo,Ib Chorkendorff +19 more