Fig. 2: CO2 electroreduction performance.

a Current density (top) and FE values (bottom) of each CO2RR product and H2 on L-CuxO-HC at different applied potentials in 1 M KOH (without iR-correction). b FE values of C2+ (top) and C2H4 yield production (bottom) for L-CuxO-HC, L-CuxO-MC, L-CuxO-LC, Cu-tip, C-CuO and C-Cu at their best performance. c C2+ current density of each catalyst at different applied potentials. d Stability measurement in 1 M KOH under a high current density of ~600 mA cm–2. Error bars represent the standard deviation of three independent measurements.