Design and synthesis of magnesium-modified copper oxide nanosheets as efficient electrocatalysts for CO2 reduction

Mg–CuO nanosheets exhibit a FE C 2 H 4 of 46.33% and FE C 2+ of 62.64% at −1.3 V vs . RHE. DFT proves that Mg species increase the Cu charge density and decrease the *CO adsorption energy, which promote the C–C coupling and the C 2+ products selectivity.