▎ 摘　　要

NOVELTY - A lithium-sulfur battery comprises an anode, a cathode, a traditional diaphragm located between anode and cathode, a diaphragm coated with cobalt sulfide/nitrogen-sulfur co-doped graphene composite material as a middle layer located between the anode and the traditional diaphragm, and an electrolyte. USE - Lithium-sulfur battery. ADVANTAGE - The lithium-sulfur battery inhibits shuttle effect of polysulfide during cycle process of battery, and has improved specific capacity, service life and multiplying power performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the lithium-sulfur battery.