Carbon dioxide catalytic conversion method and system

According to the carbon dioxide catalytic conversion method and system, the reaction unit is arranged and comprises the electrode plate, the cathode reaction zone and the anode reaction zone are arranged on the electrode plate, and the anion exchange membrane is arranged between the cathode reaction zone and the anode reaction zone. Introducing carbon dioxide and water through the cathode reaction area, so that the carbon dioxide is subjected to reduction reaction; hydroxyl generated by reaction in the cathode reaction zone enters the anode reaction zone through an anion exchange membrane, and hydrogen and water are introduced into the anode reaction zone, so that hydrogen is subjected to hydrogen oxidation reaction. Therefore, high-efficiency conversion of carbon dioxide is realized, overpotentials on the two sides of the cathode and the anode and the overall cell pressure are reduced, the power consumption is saved, and the energy efficiency of the system is improved. And meanwhile, a strong oxidation envir