Fig. 3: CO2RR performance.
a The faradaic efficiencies (FE) for various products of IE LaCu0.67Si1.33 and corresponding cathode potentials (E – iR vs RHE; R = 3.49 ± 0.04) at different applied current densities, the error bars of FEs are calculated based on three independent measurements. b FE and partial current densities for CH4 of IE LaCu0.67Si1.33 and Cu as a function of cathodic currents. The error bars of FECH4 and jCH4 are calculated based on three independent measurements. c Comparison of the FE for various C1 products of IE LaCu0.67Si1.33 and Cu at different applied current densities. d CH4 FE of IE LaCu0.67Si1.33 and IC LaCu0.67Si1.33 at various current density. e Performance comparison regarding selectivity and productivity of CH4 on the IE LaCu0.67Si1.33 catalyst and prior reports in flow cells. f A continuous 10-h CO2 electrolysis using IE LaCu0.67Si1.33 catalyst under −100 mA cm−2. The CO2 flow rate was 20 sccm. 1 M KOH was used as the electrolyte. Source data are provided as a Source Data file. 13,45,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77.
