Recent Progress of Sn‐Based Derivative Catalysts for Electrochemical Reduction of CO2

Using renewable electric power to drive CO2 electrochemical reduction to high‐value‐added chemical fuels can not only solve the problem of excessive emission of CO2, but also achieve the direct conversion of intermittent electrical energy to chemical energy, which is of great significance for controlling the carbon balance and optimizing the energy consumption structure. In recent years, various kinds of electrocatalysts have been used in the research of the CO2 electrochemical reduction reaction (CO2RR) and some progress has been made in key scientific issues such as improving selectivity and reducing the overpotential of reactions. Due to the low cost, environmental friendliness, and high selectivity to formic acid, Sn‐based catalysts are most likely to be applied in the CO2RR field on a large scale. Herein, the research progress of Sn‐based catalysts, including the research status of metallic tin catalysts, Sn‐based oxides, oxide‐derived tin catalysts, Sn‐based sulfides, and the four strategies commonly used to improve efficiency and selectivity are systematically summarized and discussed. In addition, the major challenges and several perspectives on the further research directions of Sn‐based catalysts for CO2RR are proposed.