▎ 摘　　要

NOVELTY - Method for preparing the nitrogen-doped reduced graphene oxide aerogel, involves (a) uniformly mixing graphene oxide dispersion liquid, urea and ethylene glycol, and transferring obtained mixture to hydrothermal reaction kettle for performing hydrothermal reduction reaction to obtain nitrogen-doped reduced graphene oxide hydrogel, and (b) placing obtained hydrogel in ethanol aqueous solution for removing surface impurities, and freeze-drying to obtain nitrogen-doped reduced graphene oxide aerogel with ultra-light three-dimensional porous structure. USE - Method for preparing nitrogen-doped reduced graphene oxide aerogel used for preparing microwave absorbing material (all claimed). ADVANTAGE - The method is short and simple, adopts non-toxic and harmless reagents, and the prepared aerogel exhibits excellent dielectric properties and microwave absorption properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the microwave absorbing material, involving uniformly mixing prepared nitrogen-doped reduced graphene oxide aerogel with carrier to obtain microwave absorbing material.