Back to overview

New Insights Into the Role of Imidazolium-Based Promoters for the Electroreduction of CO2 on a Silver Electrode.

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Lau Genevieve P S, Schreier Marcel, Vasilyev Dmitry, Scopelliti Rosario, Grätzel Michael, Dyson Paul J,
Project Turning functionalised ionic liquids into functional materials for catalysis and other applications
Show all

Original article (peer-reviewed)

Journal Journal of the American Chemical Society
Volume (Issue) 138(25)
Page(s) 7820 - 3
Title of proceedings Journal of the American Chemical Society
DOI 10.1021/jacs.6b03366


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.