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
Bifunctional Nickel–Nitrogen-Doped-Carbon-Supported Copper Electrocatalyst for CO2 Reduction
Daniel Choukroun,Nick Daems,Nick Daems,Thomas Kenis,Tim Van Everbroeck,Jonas Hereijgers,Thomas Altantzis,Sara Bals,Pegie Cool,Tom Breugelmans,Tom Breugelmans +10 more
TL;DR: Bifunctionality is a key feature of many industrial catalysts, supported metal clusters and particles in particular, and the development of such catalysts for the CO2 reduction reaction (CO2RR) to...
Journal ArticleDOI
Enhancing acetate selectivity by coupling anodic oxidation to carbon monoxide electroreduction
Sean Overa,Bradie S. Crandall,Bharat Shrimant,Ding Tian,Byung Hee Ko,Hae Won Shin,Chul-Jun Bae,Feng Jiao +7 more
TL;DR: In this paper , an anion exchange membrane with high ethanol permeability and a selective ethanol partial oxidation anode are incorporated into an electrolyser to generate pure acetate (>99%) at high concentration (up to 7.6 M).
Journal ArticleDOI
How membrane characteristics influence the performance of CO2 and CO electrolysis
TL;DR: In this article , the authors discuss the ability to produce sustainably carbon-based chemicals and fuels, CO2 electrolysis and the closely related CO electrolysis are advancing rapidly from fundamental studies toward industrial applications.
Journal ArticleDOI
Metalloporphyrin Encapsulation for Enhanced Conversion of CO 2 to C 2 H 4 .
TL;DR: In this paper, a molecular encapsulation strategy was proposed to enrich intermediates for facilitating electrochemical conversion of CO2 to C2H4, which achieved a higher Faradaic efficiency (FE) of 33.42% at -1.17 V versus reversible hydrogen electrode (RHE).
Journal ArticleDOI
Continuum Modeling of Porous Electrodes for Electrochemical Synthesis.
TL;DR: In this paper , a review of modeling of porous electrode systems is presented, with the aim of showing how past knowledge of macroscale modeling can contribute to the rising challenge of electrochemical synthesis.
References
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