Micro-Kinetic Model of Electrochemical Carbon Dioxide Reduction over Platinum in Non-Aqueous Solvents

Brian Andrew Rohr, Aayush R. Singh, Joseph A Gauthier, Michale John Statt, Jens K. Nørskov
Year of publication: 
Physical Chemistry Chemical Physics

The competition between the hydrogen evolution reaction and the electrochemical reduction of carbon dioxide to multi-carbon products is a well-known challenge. In this study, we present a simple micro-kinetic model of these competing reactions over a platinum catalyst under a strong reducing potential at varying proton concentrations in a non-aqueous solvent. The model provides some insight into the mechanism of reaction and suggests that low proton concentration and a high fraction of stepped sites is likely to improve selectivity to multi-carbon products.

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