Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 25, Pages 7820-7823Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b03366
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Funding
- EPFL
- Swiss National Science Foundation
- CTI Swiss Competence Center for Energy Research (SCCER) on Heat and Electricity Storage
- Siemens AG
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The electrochemical reduction of CO2 to CO is a reaction of central importance for sustainable energy conversion and storage. Herein, structure activity relationships of a series of imidazolium-based cocatalysts for this reaction are described, which demonstrate that the C4- and C5-protons on the imidazolium ring are vital for efficient catalysis. Further investigation of these findings led to the discovery of new imidazolium salts, which show superior activity as cocatalysts for the reaction, i.e., CO is selectively produced at significantly lower overpotentials with nearly quantitative faradaic yields for CO.
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