fig8

Figure 8. (A) FE distribution of C₂H₄ on Cu/C and Cu@Ag/C catalysts; (B) FE_CO on Cu/C and Cu@Ag/C catalysts; (C) FE of various products on Cu@Ag/C at various potentials. This figure is quoted with permission from Duan et al. Copyright (2024) Elsevier^[105]; (D) Schematic illustration of three types of tandem catalysts; (E) FEs of products on layered Cu/Ag; (F) Partial current density of ethanol on Cu, mixed CuAg, layered Ag/Cu, and layered Cu/Ag catalysts. This figure is quoted with permission from Luan et al. Copyright (2024) American Chemical Society^[108]; (G) Schematic diagrams of Cu needle-Ag tandem catalysts; (H) FEs for H₂, C₂H₄, CH₄, HCOO^-, C₂H₅OH, CO, and propanol on Cu needle-Ag catalysts; (I) FEs for different products of the Cu needle-Ag tested in a flow cell. This figure is quoted with permission from Wei et al. Copyright (2023) John Wiley and Sons^[111]. FE: Faradaic efficiency.