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
Structural transformations of solid electrocatalysts and photocatalysts
TL;DR: In this article, the structural evolution of solid thermal catalysts, electrocatalysts and photocatalysts is summarized and compared, and the characterization of the true active sites is emphasized.
Journal ArticleDOI
Electrodes Designed for Converting Bicarbonate into CO
Eric W. Lees,Maxwell Goldman,Arthur G. Fink,David J. Dvorak,Danielle A. Salvatore,Zishuai Zhang,Nicholas W. X. Loo,Curtis P. Berlinguette +7 more
TL;DR: In this paper, the deployment of electrolyzers that convert CO2 into chemicals and fuels requires appropriate integration with upstream carbon capture processes, and the electrolytic conversion of aqueou...
Journal ArticleDOI
Selective electrochemical reduction of nitric oxide to hydroxylamine by atomically dispersed iron catalyst.
Donghyun Kim,Stefan Ringe,Haesol Kim,Se-Jun Kim,B. Kim,Geunsu Bae,Hyung Suk Oh,Frédéric Jaouen,Wooyul Kim,Hyungjun Kim,Chang Hyuck Choi +10 more
TL;DR: In this article, an efficient and durable electrocatalyst for selective nitric oxide reduction into hydroxylamine was proposed. But the performance of this method was limited by the redox active property of NO, which makes the NO adsorbate state more sensitive to surface charge.
Journal ArticleDOI
Cation-Driven Increases of CO2 Utilization in a Bipolar Membrane Electrode Assembly for CO2 Electrolysis
Kailun Yang,Mengran Li,Siddhartha Subramanian,Marijn A. Blommaert,Wilson A. Smith,Thomas Burdyny +5 more
Journal ArticleDOI
Enhanced multi-carbon alcohol electroproduction from CO via modulated hydrogen adsorption.
Jun Li,Aoni Xu,Aoni Xu,Fengwang Li,Ziyun Wang,Chengqin Zou,Chengqin Zou,Christine M. Gabardo,Yuhang Wang,Adnan Ozden,Yi Xu,Dae-Hyun Nam,Yanwei Lum,Joshua Wicks,Bin Chen,Zhiqiang Wang,Jiatang Chen,Yunzhou Wen,Tao-Tao Zhuang,Mingchuan Luo,Xi-Wen Du,Tsun-Kong Sham,Bo Zhang,Edward H. Sargent,David Sinton +24 more
TL;DR: The authors show that high alcohol selectivity and activity can be achieved by incorporating palladium in copper by synthesizing a Pd-doped Cu catalyst that achieves a Faradaic efficiency of 40% toward alcohols and a partial current density of 277 mA cm−2 from CO electroreduction.
References
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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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