Superscalar Phase Boundaries Derived Multiple Active Sites in SnO₂/Cu₆Sn₅/CuO for Tandem Electroreduction of CO₂ to Formic Acid (Adv. Energy Mater. 13/2023)

CO2 Reduction Reaction In article 2203506, Lin Gu, Xiao Li, Hong Liu, Weijia Zhou, and co-workers aim to solve the problems of poor CO2 adsorption capacity and weak *H supply capacity in Cu-Sn alloys, by designing SnO2/Cu6Sn5/CuO nanocatalysts with superscalar phase boundaries. This strategy of tandem electrocatalytic CO2 reduction reaction (CO2RR) with multiple active sites reduced the reaction barrier in the CO2 reduction process, resulting in excellent CO2RR activity and high selectivity of formic acid.