▎ 摘　　要

NOVELTY - Preparation of graphene/metal composite current collector involves adding graphene to imidazole ionic liquid solution in the molar ratio of 1:1-5, performing ultrasonic treatment for 0.5-3 hours, obtaining mixed solution having concentration of 0.5-3 g/L, filtering using microporous membrane, drying filter cake at 40-60 degrees C, peeling, obtaining graphene film, placing obtained film in magnesium foil, immersing in 1-10 mmol/L metal precursor solution, impregnating for 10-60 minutes, washing with water, placing in furnace, introducing argon, heating at 200-600 degrees C for 0.5-5 hours and removing. USE - Preparation of graphene/metal composite current collector (claimed). ADVANTAGE - The method efficiently enables preparation of graphene/metal composite current collector having high conductivity and strength and excellent thickness uniformity by simple process.