fig2
Figure 2. (A) Current density, (B) Faradaic efficiency of CO, and (C) Faradaic efficiency of C2+ for Cu, CuCo0.07%, CuCo0.4% and CuCo1.8%; (D) Faradaic efficiency of C2H4 and C2H5OH for CuCo samples with different amounts of Co. Error bars are means ± SD (n = 3 replicates). C2+: Multi-carbon.