Electrode for electrochemical reduction of CO2 and preparation method

The invention discloses an electrode for electrochemical reduction of CO2, which comprises a conductive substrate loaded with metal bismuth and lead. Meanwhile, the invention provides a corresponding preparation method. The prepared electrode is loaded with a bismuth-lead material, has a bismuth metal phase and a bismuth-lead mixed phase, has abundant electrochemical reduction CO2 active sites, can stably work for more than 50 hours, and can stably produce formic acid at 15.56 mA cm when the external potential is-0.96 V vs.RHE and the contact resistance between the catalyst and the substrate is extremely small, so that the electrode has the advantages of high electrochemical reduction efficiency, high electrochemical reduction efficiency and the like. And the catalyst has extremely high formic acid Faraday efficiency (greater than 90%), effectively inhibits hydrogen evolution reaction, and solves the problems of too low reduction current density and poor stability in the existing CO2 electro-catalysis p