▎ 摘　　要

NOVELTY - The method involves providing a silicon nano-pore column array, depositing catalyst nickel nanometre crystal on the silicon nanometre hole column array, taking the silicon nano-pore column array deposited with nickel nano-crystalline as substrate, taking methane as carbon source, using mixed gas of argon gas and hydrogen as carrier gas, and obtaining a graphene-based composite material by chemical vapor deposition, where graphene material grows parallel to the substrate in the composite material. USE - The method is useful for preparing graphene-based composite material. ADVANTAGE - The method: enables depositing catalyst nanometer metal nickel on silicon nano-pore column array; grows parallel to the substrate of graphene sheet; overcomes that the structure of vertical substrate is not stable; greatly enhances the emission stability in electronic emitting process; has relatively high perimeter area ratio; and ensures field emission density of material.