Low-voltage electrode for electrometallurgy and electrochemistry

The utility model relates to an electrode for electrochemistry and electrometallurgy technologies, particularly to a low-voltage electrode for electrometallurgy and electrochemistry, which includes slotted anode and cathode, wherein the cathode includes a cathode carbon block and a current conducting rod; a groove or a hole is formed on the cathode carbon block; the size of the cathode carbon block and the groove or hole forming method are not changed; a transitional protective film layer made of nano composite material is partially sprayed on the surface of the current conducting rod and is 5 micrometers to 20 micrometers in thickness; and a nano composite material layer is applied onto the dried transitional protective film layer and is 20 micrometers to 50 micrometers in thickness. The electrode has consistent resistance and stable voltage, can effectively improve the physical field of the electrolytic tank, so as to improve the vertical magnetic field, reduce the horizontal current and improve the electro