▎ 摘　　要

NOVELTY - A composite material comprises a mesoporous carbon and graphene quantum dots charged in the mesopores of the mesoporous carbon, and has specific surface area of 800-1000 m2.g-1 and pore capacity of 2-4 cm3.g-1. USE - Composite material is used for forming positive electrode of lithium-sulfur battery (claimed). ADVANTAGE - The composite material has excellent electroconductivity and large specific surface area and effectively inhibits dissolution of polysulfide diffusion, and is conductive to transmission of ions and electrons. The lithium-sulfur battery provided with the positive electrode made of the composite material has excellent cycle characteristics and high theoretical specific capacity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of composite material, which involves using an aqueous solution of a resole phenolic resin, a surfactant chosen from F127-type surfactant and P123-type surfactant and graphene quantum dot aqueous solution; and (2) lithium-sulfur battery.