Efficient CO2 to CO electrolysis on solid Ni–N–C catalysts at industrial current densities

Abstract

We demonstrate the direct electrochemical conversion of CO₂ to CO using solid state Ni–N–C carbon catalysts characterized by a coordinative molecular Ni–N_x active moiety at industrial current densities of up to 700 mA cm⁻² with faradaic efficiencies superior to those of the state-of-the-art AgO_x electrocatalysts.