Selective and energy-efficient electrosynthesis of ethylene from CO2 by tuning the valence of Cu catalysts through aryl diazonium functionalization

Huali Wu, Lingqi Huang, Janis Timoshenko, Kun Qi, Wensen Wang, Jiefeng Liu, Yang Zhang, Shaokang Yang, Eddy Petit, Valérie Flaud, Ji Li, Chrystelle Salameh, Philippe Miele, Luc Lajaunie, Beatriz Roldán Cuenya, Dewei Rao () and Damien Voiry ()
Additional contact information
Huali Wu: Université Montpellier, ENSCM, CNRS
Lingqi Huang: The Chinese University of Hong Kong
Janis Timoshenko: Fritz-Haber-Institute of the Max-Planck Society
Kun Qi: Université Montpellier, ENSCM, CNRS
Wensen Wang: Université Montpellier, ENSCM, CNRS
Jiefeng Liu: Université Montpellier, ENSCM, CNRS
Yang Zhang: Université Montpellier, ENSCM, CNRS
Shaokang Yang: Jiangsu University
Eddy Petit: Université Montpellier, ENSCM, CNRS
Valérie Flaud: University of Montpellier, ENSCM, CNRS
Ji Li: Shanxi University of Science and Technology
Chrystelle Salameh: Université Montpellier, ENSCM, CNRS
Philippe Miele: Université Montpellier, ENSCM, CNRS
Luc Lajaunie: Universidad de Cádiz
Beatriz Roldán Cuenya: Fritz-Haber-Institute of the Max-Planck Society
Dewei Rao: Jiangsu University
Damien Voiry: Université Montpellier, ENSCM, CNRS

Nature Energy, 2024, vol. 9, issue 4, 422-433

Abstract: Abstract Although progress has been made in producing multi-carbon products from the electrochemical reduction of CO2, the modest selectivity for ethylene (C2H4) leads to low energy efficiency and high downstream separation costs. Here we functionalize Cu catalysts with a variety of substituted aryl diazonium salts to improve selectivity towards multi-carbon products. Using computation and operando spectroscopy, we find that Cu surface oxidation state (δ+ where 0

Date: 2024
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DOI: 10.1038/s41560-024-01461-6

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