▎ 摘　　要

NOVELTY - The preparation method of nitrogen-doped graphene aerogel involves dispersing graphene oxide in deionized water and then mixing to obtain 3.2-3.4 g/l graphene oxide dispersion liquid, dispersing boron nitride powder in deionized water and then centrifuging at 6000-9000 rpm for 8-15 minutes to obtain 0.015-0.02 g/l boron solution, uniformly mixing, adding 6.5-13 g/l ascorbic acid to the mixture and then leaving for 15-30 minutes, hydrothermally reacting the mixture, adding ethanol to the mixture, and drying at 30-40 degrees C for 15-24 hours. USE - The method is useful for preparation of nitrogen-doped graphene aerogel, which is useful as thermal conductive material in battery box of electric automobile. ADVANTAGE - The method enables preparation of nitrogen-doped graphene aerogel with excellent mechanical properties and electrical insulation properties.