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
Insight into the Formation and Transfer Process of the First Intermediate of CO2 Reduction over Ag-Decorated Dendritic Cu.
TL;DR: Spectroscopic evidence is provided that the first intermediate of CO 2 reduction on Ag-decorated Cu is carboxylate anion *CO 2 - bonded with the catalyst surface through C and O atom.
Journal ArticleDOI
2022 roadmap on low temperature electrochemical CO2 reduction
Ifan E. L. Stephens,Karen Lynn Chan,Alexander Bagger,Shannon W. Boettcher,Julien Bonin,Etienne Boutin,Aya K. Buckley,Raffaella Buonsanti,Etosha R. Cave,Xiaoxia Chang,See Wee Chee,Alisson Henrique Marques da Silva,Phil De Luna,Oliver Einsle,Balázs Endrődi,María Escudero-Escribano,Jorge Ferreira de Araújo,Marta C. Figueiredo,Christopher Donald Hahn,Kentaro U. Hansen,Sophia Haussener,Sara Hunegnaw,Ziyang Huo,Yun Jeong Hwang,Csaba Janáky,Buddhinie S. Jayathilake,Feng Jiao,Zarko P. Jovanov,Parisa Karimi,Marc T. M. Koper,Kendra P. Kuhl,Woong Lee,Zhiqin Liang,Xuan Liu,Sichao Ma,Mingyu Ma,Hyung Suk Oh,Marc Robert,Beatriz Roldan Cuenya,Jan Rossmeisl,Claudie Roy,Mary P. Ryan,Edward Sargent,Paula Sebastián-Pascual,Brian Seger,Ludmilla Steier,Peter Strasser,Ana Sofia Varela,R Vos,Xue Wang,Bingjun Xu,Hossein Yadegari,Yuxiang Beckett Zhou +52 more
TL;DR: In this article , the authors discuss the outstanding challenges towards commercialization of electrochemical CO2 reduction technology: energy efficiencies, selectivities, low current densities, and stability, and highlight the opportunities in establishing rigorous standards for benchmarking performance, advances in in operando characterization, the discovery of new materials towards high value products, the investigation of phenomena across multiple-length scales and the application of data science towards doing so.
Journal ArticleDOI
Linking dynamic chemical state of catalysts with product profile of electrocatalytic CO2 reduction.
TL;DR: In this article, the dynamic chemical state of Cu sites under CO2 RR conditions extracted by in situ/operando characterizations is analyzed and a critical link between the chemical states of Cu and the product profile of CO2 is established.
Journal ArticleDOI
CO2 valorisation towards alcohols by Cu-based electrocatalysts: challenges and perspectives
TL;DR: In this paper, the most recent advances on the electrochemical transformation of CO2 to alcohols, mainly methanol, ethanol and n-propanol, as a promising way to produce renewable liquid fuels are discussed.
Journal ArticleDOI
Highly dispersed, single-site copper catalysts for the electroreduction of CO2 to methane
Teng Zhang,Sumit Verma,Sumit Verma,Soojeong Kim,Tim T. Fister,Paul J. A. Kenis,Paul J. A. Kenis,Andrew A. Gewirth,Andrew A. Gewirth +8 more
TL;DR: In this paper, a single-site Cu(I) center was identified as the catalytically active site for the preferential formation of methane over ethylene, with an unexpected selectivity towards methane even in alkaline media, with a methane Faradaic efficiency as high as 42%.
References
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