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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Enhanced carbon dioxide reduction in a thin-film rotating disk photocatalytic fuel cell reactor
Jun Zhang,Yang Penglin,Jili Zheng,Jun Li,Qian Fu,Yongning He,Yanan Zou,Xuehong Wu,Chuanxiao Cheng,Wang Fan +9 more
TL;DR: In this paper, a thin-film rotating disk photocatalytic fuel cell (PFC) was used for reducing CO2 to CH4 in a CO2-to-CH4 fuel cell.
Journal ArticleDOI
Overcoming Nitrogen Reduction to Ammonia Detection Challenges: The Case for Leapfrogging to Gas Diffusion Electrode Platforms
TL;DR: In this article , the authors show that detection challenges can be strongly reduced by switching from an H-cell to a gas diffusion electrode (GDE) cell design as a catalyst testing platform, which is anticipated to allow for a reduction in the cost of crucial 15N2 control experiments from €100-2000 to less than €10.
Journal ArticleDOI
New insight into heterointerfacial effect for heterogenized metallomacrocycle catalysts in executing electrocatalytic CO2 reduction
TL;DR: In this paper , the influence of heterointerfacial effect on catalytic performance of MeNiPc/graphene has been systematically disclosed based on well-structured nickel phthalocyanine and porphyrin with the same functional groups.
Journal ArticleDOI
Aqueous Electrochemical Partial Oxidation of Gaseous Ethylbenzene by a Ru-Modified Covalent Triazine Framework.
TL;DR: It is determined that a gas diffusion electrode (GDE) supporting Ru atom-modified covalent triazine frameworks (Ru-CTF) has activity for the electrooxidation of gaseous ethylbenzene to acetophenone using an aqueous electrolyte.
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