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
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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
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Journal ArticleDOI
Manipulating Au-CeO2 Interfacial Structure Toward Ultrahigh Mass Activity and Selectivity for CO2 Reduction.
Jile Fu,Jile Fu,Jile Fu,Dezhang Ren,Meiling Xiao,Ke Wang,Ya-Ping Deng,Dan Luo,Jianbing Zhu,Guobin Wen,Ying Zheng,Ying Zheng,Zhengyu Bai,Lin Yang,Zhongwei Chen +14 more
TL;DR: A charge-guided approach to construct the interfacial structure for CO 2 RR and beyond is affords and the strong interaction between Au and CeO 2 endows the catalyst with excellent long-term stability.
Journal ArticleDOI
Non-Innocent Role of Porous Carbon Toward Enhancing C2–3 Products in the Electroreduction of Carbon Dioxide
Xu Han,V. Sara Thoi +1 more
TL;DR: The findings illustrate that carbon in carbon-based catalysts can have an outsized role in directing product formation in electrocatalytic carbon dioxide reduction and suggest the carbon modifiers may influence the product distribution by serving as a porous and hydrophobic barrier that can affect local pH and CO2 concentration.
Journal ArticleDOI
Sustainable membrane-coated electrodes for CO2 electroreduction to methanol in alkaline media
TL;DR: In this paper, the Spanish Ministry of Science and Universities under project grant CTQ2016-76231-C2-1-R is gratefully acknowledged for financial support from the Spanish National Library.
Journal ArticleDOI
Comparative Analysis of Solar-to-Fuel Conversion Efficiency: A Direct, One-Step Electrochemical CO2 Reduction Reactor versus a Two-Step, Cascade Electrochemical CO2 Reduction Reactor
Xinghao Zhou,Chengxiang Xiang +1 more
TL;DR: In this article, the solar-to-fuel (STF) conversion efficiencies in a direct, one-step CO2 reduction reactor and a two-step, cascade CO 2 reduction reactor were analyzed and compared for two distinctive device configurations.
Journal ArticleDOI
Recent advances in electrochemical reduction of CO2
TL;DR: In this article, the advances on electrochemical CO2 reduction (ECR) in the past three years are reviewed with focus on the developments of electrolytes, electrocatalysts, and new strategies for ECR.
References
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