▎ 摘　　要

NOVELTY - Graphene aerogel includes 50-75 wt.% graphene oxide solution and 50-25 wt.% modified graphene oxide solution (A). The modified graphene oxide solution (A) comprising 95-105 pts. wt. graphene oxide, 90-110 pts. wt. water, 5-10 pts. wt. polyethyleneimine, and 6-15 pts. wt. catalyst. The catalyst is one of potassium hydroxide and sodium hydroxide. USE - Graphene aerogel. ADVANTAGE - The graphene aerogel has improved thermal insulation property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the graphene aerogel, which involves mixing the graphene oxide solution and the modified graphene oxide solution (A), and performing ultrasonic dispersion to obtain a graphene oxide dispersion, freezing graphene oxide dispersion, and then freeze-drying to obtain a ready-to-use product, carrying out burning treatment on the object to be used to obtain the finished product.