▎ 摘　　要

NOVELTY - Preparing three-dimensional structure graphene-reinforced copper-based composite material comprises e.g. adding foam copper in the detergent ultrasonic cleaning to obtain a pretreated foamed copper, immersing the pretreated foam copper in impregnation liquid, performing excessive impregnation, taking out the dried air, drying, repeating the immersion process and baking to obtain impregnated foamed copper, where the immersion liquid comprises nickel sulfate, nickel acetate, nickel carbonate and water, placing the impregnated foamed copper in a tube furnace, introducing a protective gas and reducing gas, setting a heating curve, annealing, turning off the reducing gas, maintaining a specific flow ratio of carbon source gas and protective gas, depositing three-dimensional network graphene, completing the reaction, turning off the carbon source gas, cooling under a protective gas atmosphere with the furnace to obtain product. USE - The method is useful for preparing three-dimensional structure graphene-reinforced copper-based composite material. ADVANTAGE - The method increases the catalytic area and improves the mechanical strength. DETAILED DESCRIPTION - Preparing three-dimensional structure graphene-reinforced copper-based composite material comprises (1) adding foam copper in the detergent ultrasonic cleaning for 30-60 minutes to obtain a pretreated foamed copper, (2) immersing the pretreated foam copper in impregnation liquid, performing excessive impregnation for 12-24 hours, taking out the dried air, drying, repeating the immersion process for 2-4 times and baking at 600-900 degrees C for 4-6 hours to obtain impregnated foamed copper, where the immersion liquid comprises 30-65 pts. wt. nickel sulfate, 40-60 pts. wt. nickel acetate, 20-35 pts. wt. nickel carbonate and 100-150 pts. wt. water, (3) placing the impregnated foamed copper in a tube furnace, introducing a protective gas and reducing gas, setting a heating curve, annealing at a heating rate of 15-20 degrees C/minute at 900-1000 degrees C for 15-30 minutes, where the reducing gas flow rate is 100-200 sccm, the protective gas flow rate is 200-400 sccm and (4) turning off the reducing gas, maintaining a specific flow ratio of carbon source gas and protective gas, depositing three-dimensional network graphene, completing the reaction after 30-60 minutes, turning off the carbon source gas, cooling at 200-300 degrees C at a cooling rate of 5-10 degrees C/minute under a protective gas atmosphere with the furnace to obtain product.