▎ 摘　　要

NOVELTY - The method comprises (i) removing oil for polar plate, cleaning, drying, placing in argon atmosphere, using pulse magnetic control sputtering technology to deposit metal M on the surface of electrode plate, introducing argon gas and nitrogen, and depositing metal M, (ii) placing polar board in gas atmosphere of argon, using pulse magnetron sputtering process to deposit metal M, introducing mixed gas containing argon and nitrogen, (iii) cleaning and drying polar sheet and placing in second aggregate solution, using polar board as working electrode, preparing polymer passivation layer on the surface of polar plate by cyclic voltammetry, (iv) placing in second electropolymerization solution, where the second electropolymerization solution contains polymer monomers, aniline derivatives with ferrocene groups, carboxylated carbon nanotubes and organic acids, and (v) taking out polar plate, placing in a reduction furnace, passing in an inert gas containing hydrogen, and heating USE - Method for preparing high temperature and anti-oxidant graphite product coating, which is used for surface corrosion of polar plate of fuel cell. Can also be used in fuel cell used in electric vehicles, hybrid vehicles, plug-in hybrid electric vehicles and hydrogen-powered vehicles. ADVANTAGE - The fuel cell polar plate composite coating efficiently blocks the growth of the hole-shaped defect in the coating deposition direction, reduces the oxygen coating defect density, improves the shielding effect of the composite coating, and improves the bonding force between the coating and the polar plate substrate, and reduces the resistance and significantly improves the corrosion resistance and service life of the pole plate in the fuel cell. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a polar plate for fuel cell.