▎ 摘　　要

NOVELTY - Preparation of graded porous structure foam metal involves washing foam metal, drying, soaking in N-methylpyrrolidone-containing polyaniline for 2-10 hours, drying, preparing enriched graphene solution using improved Hummer method, ultrasonic treating graphene and polystyrene ball solution for 20-60 minutes, mixing at mass ratio of 1:10-40, stirring for 10-30 minutes, ultrasonic treating for 10-30 minutes, soaking foamed metal for 2-10 hours, heating at 50-80 degrees C, drying, placing in corundum porcelain boat, annealing under ammonia-argon mixed gas, and heating at 700-1000 degrees C for 1-4 hours. USE - Method for preparing graded porous structure foam metal. DETAILED DESCRIPTION - Preparation of graded porous structure foam metal comprises washing foam metal, drying, soaking in N-methylpyrrolidone-containing polyaniline for 2-10 hours, drying, preparing enriched graphene solution using improved Hummer method, ultrasonic treating graphene and polystyrene ball solution for 20-60 minutes, mixing at mass ratio of 1:10-40, stirring for 10-30 minutes, ultrasonic treating for 10-30 minutes, soaking foamed metal for 2-10 hours, heating at 50-80 degrees C, drying, placing in corundum porcelain boat, annealing under ammonia-argon mixed gas, heating at 700-1000 degrees C for 1-4 hours, cooling to 100-500 degrees C, and cooling to room temperature.