Fig. 5: Performance evolution.

a, b Potential-dependent conversion (con.) of C2H2 and FE of the obtained products over Cu-PCC and Cu-C. c The C2H4 yield normalized to the ECSA and Cu loading capacity. d Performance evaluation under different C2H2 concentrations. (The shaded areas represent the 95% confidence intervals.) e Potential fluctuation test of Cu-PCC and Cu-C. f Continuous test of the Cu-PCC. The error bars correspond to the standard deviation of at least three independent measurements, and the center value for the error bars is the average of the three independent measurements.