▎ 摘　　要

NOVELTY - A vulcanized polythiol-rich lithium-sulfur battery positive electrode composite material comprises conductive graphene modified phase and polythiol to provide sulfur copolymerization site and to enhance capacity and charge and discharge stability of composite material. The conductive composite material is prepared by subjecting graphene oxide, L-cysteine hydrochloride and ammonia to Hummers method at 90 degrees C, cooling, vacuum filtering, freeze-drying, mixing with sublimed sulfur, and heating. USE - Vulcanized polythiol-rich lithium-sulfur battery positive electrode composite material. ADVANTAGE - The method is simple and has low cost. The composite material has excellent electrochemical performance.