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

Abstract Electrochemical reduction of CO2 to value‐added multicarbon products, which can be used as fuels or indirectly as fuel precursors, is a promising approach to reduce CO2 levels and mitigate the energy crisis. However, poor product selectivity is still a major obstacle in the development of CO2 reduction. Here, Cu3N‐derived Cu nanowires, with a high density of grain boundaries, are synthesized and demonstrated as an efficient electrocatalyst for electrochemical reduction CO2 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.