▎ 摘　　要

NOVELTY - Ultra-thin aerogel film, obtained by (i) dispersing modified graphene oxide in deionized water, adding aniline, and ammonium persulfate solution with a concentration of 0.2-0.3 g/ml, stirring and mixing for 3-5 minutes, and freeze-drying after the reaction to obtain aerogels ; (ii) dispersing aerogel in anhydrous N-methylpyrrolidone under ultrasound, and adding 4,4'-diaminodiphenyl ether and pyromellitic dianhydride into the solution under nitrogen atmosphere, at 25℃ after continuous stirring for 2 hours, to obtain uniform and viscous solution and applying solution rod to a clean glass plate and treating at 140℃ for 1 hours, treating at 350℃ for 2 hours to obtain an ultra-thin aerogel film for high-performance electromagnetic interference shielding, is claimed. USE - The aerogel film is useful for high-performance electromagnetic interference shielding. ADVANTAGE - The high performance electromagnetic interference shielding ultra-thin aerogel film is endowed with high electromagnetic shielding property and corrosion resistance.