Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.260
Publication date: 7th February 2022
The electrocatalytic reduction of CO2 is very sensitive to the nature of the electrolyte near the electrode surface. The presence of cations and anions, and how they are indirectly affected by the (local) pH, play a crucial role, both for CO2 reduction and for the competing hydrogen evolution reaction. In my talk, I will demonstrate these effects for CO2 reduction on flat and nanoporous gold electrodes, and show how mass transport regulates them. I will discuss the effect of monovalent cations, multivalent cations, bicarbonate concentration (and how bicarbonate responds to the presence of cations), and varying mass transport rates as regulated by a rotating disc electrode.
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