Fig. 4: Electrochemical CO2RR performances.
From: Lanthanide single-atom catalysts for efficient CO2-to-CO electroreduction
a FECO for Ln SACs at −0.67 V vs. RHE (without iR-correction) in H-cell under CO2 saturated 0.5 M KHCO3 solution. b Potentials and JCO for Er SAC at different current densities with 1 M KHCO3 solution (upper) and 1 M KCl (pH = 1, down) in flow cell (95% iR-correction, Resistance = 2.4 ± 0.3 Ω and 1.8 ± 0.2 Ω for neutral and acidic electrolyte, respectively). c FECO and current densities for Er SAC at different CO2 flow rates at 1 M KCl (pH = 1). d FECO and SPCE of CO2 to CO on at different CO2 flow rates (pH=1, applied current density of −200 mA cm−2). e Stability of Er SAC at a current density of −100 mA cm−2 with (pH = 1, potential with 95% iR-correction). f Comparison of CO2RR-to-CO performance with the state-of-art electrocatalysts in acidic media68,69,70,71,72,73. The error bars correspond to the standard deviations of measurements over three separately prepared samples under the same testing conditions.
