▎ 摘　　要

NOVELTY - The method involves applying a carbon nanotube layer on each of opposing surfaces of a separator substrate (110). Graphene oxide sheets and manganese dioxide nanoparticles are dispersed in solvent to form a mixture. The mixture is deposited on the carbon nanotube surface to form a graphene oxide composite layer. Another carbon nanotube layer is applied on the composite layer and is formed with another graphene oxide composite layer, forming a functional layer (120) on the substrate surface. USE - Method for making lithium-sulfur battery separator. ADVANTAGE - The lithium-sulfur battery separator exhibits superior performance to confine the polysulfide diffusion and avoids the shuttle effect between the cathode and the anode, thus an electrochemical reactivity of the lithium-sulfur battery is enhanced. The carbon nanotubes have excellent mechanical properties, conductivity, and large aspect ratio, thus the positive electrode is provided with excellent mechanical properties and conductivity without polymer binder or current collector, further improving an energy density of the lithium-sulfur battery. DESCRIPTION OF DRAWING(S) - The drawing shows the structural schematic view of a lithium-sulfur battery separator. Separator substrate (110) Functional layer (120)