Selective Electroreduction of CO2 to C2 Products over Cu3N‐Derived Cu Nanowires

Abstract Electrochemical reduction of CO 2 to value‐added multicarbon products, which can be used as fuels or indirectly as fuel precursors, is a promising approach to reduce CO 2 levels and mitigate the energy crisis. However, poor product selectivity is still a major obstacle in the development of CO 2 reduction. Here, Cu 3 N‐derived Cu nanowires, with a high density of grain boundaries, are synthesized and demonstrated as an efficient electrocatalyst for electrochemical reduction CO 2 to C2 products. The as‐prepared catalyst exhibits excellent activity and selectivity for the production of C2 products, with a maximum faradaic efficiency of 86 % at −1.0 V, and long‐term stability throughout 28 h of electrolysis.