▎ 摘　　要

NOVELTY - Preparing macroscopic graphene aerogel involves adding raw material graphite to peroxide in sulfuric acid solution, and keeping reaction to obtain three-dimensional structure of the primary graphite, soaking three-dimensional structure obtained and washing with water and drying to obtain interlayer residual sulfuric acid of expandable graphite aerogel. The expandable graphite aerogel obtained is subjected to high temperature thermal expansion at 400-1000 degrees C to obtain macroscopic graphene aerogel. USE - Method for preparing macroscopic graphene aerogel. ADVANTAGE - The method enables to prepare macroscopic graphene aerogel that has low energy consumption, high efficiency, excellent structural stability and electron-conducting performance, and in simple manner.