The present invention relates to an electrolysis process for producing sodium metal at a low operating temperature, comprising the steps of: introducing an electrolyte solution to an electrolytic cell comprising a graphite or carbon anode and an iron or copper cathode to conduct electrolysis process; and delivering an electrical current to the cell to librate sodium at the cathode and chlorine gas at the anode; characterized in that: the electrolyte solution comprises a sodium salt and a deep eutectic solvent, wherein the sodium salt is dissolved in the deep eutectic solvent at a temperature of 120?C; and wherein the deep eutectic solvent comprises a quaternary salt selected from a group consisting of quaternary ammonium halide and quaternary phosphonium halide; and a hydrogen bond donor (HBD) at 1:1-5 molar ratio of quaternary salt to hydrogen bond donor.