Electroreduction of carbon dioxide on palladium electrodes at potentials higher than the reversible hydrogen potential

The electroreduction of CO2 was observed on dispersed electrolytic deposits of palladium at potentials more positive than the reversible hydrogen potential (pH 8–10) with the HCOO − current yield close to 100%. It was assumed that adsorbed hydrogen atoms take part in the slow stage of the electroreduction of HCO3− (CO2) to HCOO−.