NDLI: What It Takes for Imidazolium Cations to Promote Electrochemical Reduction of CO<sub>2</sub>.

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What It Takes for Imidazolium Cations to Promote Electrochemical Reduction of CO₂.

Content Provider	Europe PMC
Author	Neyrizi, Sobhan Kiewiet, Joep Hempenius, Mark A. Mul, Guido
Copyright Year	2022
Abstract	Imidazolium cations enhance the performance of severalelectrodesin converting CO2 to CO in non-aqueous media. In this publication,we elucidate the origin of the function of imidazolium cations whenexposed to Au electrodes in anhydrous acetonitrile in CO2 atmosphere. We demonstrate that imidazolium cations lead to unprecedentedlylow overpotentials for CO2 reduction to CO on Au, with∼100% Faradaic efficiency. By modification of the N1 and N3 functionality of the imidazolium cation, we showa direct correlation between the performance in CO2 reductionand the C2–H acidity of the cation. Based on NMRanalyses, DFT calculations, and isotopic labeling, showing an inversekinetic isotope effect, we demonstrate that the mechanism involvesa concerted proton–electron transfer to the electrode-adsorbedCO2 intermediate. The demonstrated mechanism provides guidelinesfor improvement in the energy efficiency of non-aqueous electrochemicalCO2 reduction, by a tailored design of electrolyte cations.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC9578038&blobtype=pdf
Journal	ACS Energy Letters [ACS Energy Lett]
Volume Number	7
DOI	10.1021/acsenergylett.2c01372
PubMed Central reference number	PMC9578038
Issue Number	10
PubMed reference number	36277133
e-ISSN	23808195
Language	English
Publisher	American Chemical Society
Publisher Date	2022-09-15
Access Restriction	Open
Rights License	Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2022 The Authors. Published by American Chemical Society
Content Type	Text
Resource Type	Article
Subject	Chemistry Energy Engineering and Power Technology Renewable Energy, Sustainability and the Environment Materials Chemistry Fuel Technology

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What It Takes for Imidazolium Cations to Promote Electrochemical Reduction of CO2.

What It Takes for Imidazolium Cations to Promote Electrochemical Reduction of CO₂.