Selective CO2 electroreduction to formate over a Cu-based catalyst in S2−-containing electrolyte

Abstract

A Cu₂O-derived catalyst selectively and durably electroreduces CO₂ to formate with a maximum faradaic efficiency of 74% in S²⁻-containing electrolyte and exhibits a high formate partial current density of up to 110 mA cm⁻² in a flow cell.