“…Furthermore, researchers have recently become concerned in developing bimetallic Cu-based CO 2 RR electrocatalysts with enhanced selectivity, consistent performance, and low overpotential by combining copper with other metals such as Cu–In, , Cu–Zn, Cu–Pd, , Cu–Bi, , Cu–Ag, Cu–Au, and Cu–Sn. , In addition, Wang et al reported that the excellent activity in electrocatalytic reduction of CO 2 to formate was ascribed to the abundant copper/tin–dioxide interfaces in the Cu/Sn–oxide heterostructure, by reducing the reaction free energies for the formation of HCOO – species. Further, Kopač et al developed a copper/perovskite substrate (Cu/SrTiO 3 ) as a bifunctional electrocatalyst for CO 2 hydrogenation to CO. Herein, authors show the presence of a Cu/SrTiO 3 interface region boosting the electrocatalytical activity of the Cu/SrTiO 3 interface sites more than the copper or support sites, and similar results have also been reported in many other literature reports. − This is owing to the formation of robust heterogeneous interfaces, their synergetic effects, and surface oxygen vacancies, which makes the facile electron transfer mechanism and accelerates the reaction kinetics . Later, Li et al reported MOF-derived Cu 2 O/Cu nanoparticles anchored into porous carbon frameworks with N-doping for CO 2 electroreduction.…”