▎ 摘　　要

NOVELTY - The preparation method of self-supporting three-dimensional graphene involves mixing glucose and hexamethylenetetramine, and stirring to homogeneous powder, heating homogeneous powder at temperature of 1000-1400 degrees C at heating rate of 4-10 degrees C/minute under inert atmosphere, and maintaining the temperature for 0.5-5 hours, and cooling to room temperature and removing sample. USE - Preparation of self-supporting three-dimensional graphene (claimed). ADVANTAGE - The method enables preparation of self-supporting three-dimensional graphene with excellent foaming effect and current transmission capacity.