Fig. 2: Electrochemical epoxidation performance of C2H4.

a LSV of 10Ag/SnO2 in C2H4 and Ar in 0.05 M KOH electrolyte at a scan rate of 50 mV/s. b FE of products and EO selectivity on Ag/SnO2 with different Ag loadings at 25 mA/cm2. c FE of EO for 10Ag/SnO2, Ag, and SnO2 at different current densities. d Stability test of 10Ag/SnO2 at cell voltage of 4.2 V. Error bars represent standard deviations from the mean of at least three repeated experiments. The experiments are conducted without iR compensation, and the loading of catalysts is 0.2 mg/cm2. Source data are provided as a Source Data file.