▎ 摘　　要

NOVELTY - The method involves pre-processing a surface of a metal substrate. A solid carbon source is preset on a surface. The metal substrate is pre-treated and irradiated by laser alloying process under protection atmosphere, where laser alloying technique uses nanosecond pulse laser, optical fiber laser, carbon dioxide laser or semiconductor laser, and highest power is 30-100 W, and parameters of laser alloying process comprises processing time is 1 to 5 times, spot diameter 10- 50 mm, and laser power 5-30 W. USE - Method for preparing a metal/carbon material bipolar plate by laser in situ for hydrogen fuel cell used in traffic and energy fields. Uses include but are not limited to nickel-base high temperature alloy, aluminum alloy, stainless steel, titanium alloy and copper alloy. ADVANTAGE - The method enables preparing metal/carbon material bipolar plate that has excellent corrosion resistance, chemical stability, conductivity and chemical stability. The metal substrate of the corrosion resistance and conductive ability is greatly improved, reducing the economic loss caused by the performance cannot satisfy corresponding to the requirement. The method enables improving production efficiency, making the graphene into an effective barrier to prevent the corrosion environment in penetration. The performance of the metal bipolar plate material and corrosion protection is improved and solves the problem of providing theoretical basis and experience guidance of application in the new energy graphene. The laser in situ growth mode makes the graphene film tightly combined with the alloy substrate, improves the corrosion of the material, so as to prolong the service life and safety of the bipolar plate. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an optical microscope image of a bipolar plate made of metal/carbon material.