Stability and Redispersion of Ni Nanoparticles Supported on N-Doped Carbons for the CO2 Electrochemical Reduction

Single-metal nitrogen carbon materials (M–N–C) have been proposed as one of the most attractive catalysts for electrocatalytic CO₂ reduction reaction (eCO₂RR). Furthermore, with maximum atom efficiency and low coordination metal centers, they show high selectivity toward producing CO(1−4) even with the competing hydrogen evolution reaction (HER). Combined products or syngas can be used to produce liquid hydrocarbons via Fischer–Tropsch synthesis. Moreover, the M–N–C materials can further reduce CO to hydrocarbons.(3,5,6) The experimentally most studied example of these types of materials, even proposed to be industrially efficient, comes from Ni–N–C, which is highly selective to producing CO.