Fig. 4: Control experiments of individual NtrRR and individual CO2RR on NC and Cu1/NC.
From: Sequential co-reduction of nitrate and carbon dioxide enables selective urea electrosynthesis
a NtrRR current density (jNtrRR, corresponding to the sum of partial current densities of NO2−, N2H4 and NH3) during the individual reduction of NO3−. b CO2RR current density (jCO2RR, corresponding to the partial current density of CO) during the individual reduction of CO2. c The ratio between jNtrRR and jCO2RR, and the urea partial current density (jurea) during the co-reduction of NO3− and CO2. d The conversion rate of NO3− to N-containing products on NC in individual NtrRR as compared with co-reduction reaction. e The conversion rate of CO2 to C-containing products on NC in individual CO2RR as compared with co-reduction reaction.
