High-purity high-conductivity graphene graded porous carbon and preparation method thereof

The invention discloses high-purity high-conductivity graphene graded porous carbon and a preparation method thereof. A substance with a high carbon content serves as a precursor, and direct pore-forming, catalytic graphitization and/or post-treatment are performed in atmosphere to obtain the high-purity high-conductivity graphene graded porous carbon. According to the preparation method, continuous heating is performed, steps are closely linked, heat loss caused by poor step linking in a conventional method is avoided, and continuous and large-scale production is easily performed. The prepared carbon material has high specific surface area, pore diameter controllability and the like, a carbon framework is a graphene structure facilitating electronic conduction, double properties of high mass transfer and high conduction can be taken into account, and the carbon framework has the advantages of good heat vibration resistance, strong mechanical strength and the like. The carbon materialcan be applied to the fie