▎ 摘　　要

NOVELTY - Preparing anode polysulfide buffer layer comprises uniformly dispersing graphene oxide in octylamine solution, transferring to a reaction kettle, then adding molybdenum trioxide and selenium dioxide, mixing uniformly at 180-200°C, reacting for 24-48 hours to obtain the precursor, then cleaning the precursor, drying, annealing and reducing for 1.5-3 hours at 380-450°C under the mixed atmosphere of hydrogen and inert gas to obtain molybdenum diselenide/reduced graphene oxide (MoSe2/rGO) composite material, adding the MoSe2/rGO composite material in a grinding body, adding polyvinylidene fluoride and N-methyl-2-pyrrolidone, grinding to mix uniformly to obtain the black slurry, then coating the black slurry on the anode surface the lithium-sulfur battery, and vacuum drying. USE - The buffer layer is useful for improving cycle performance of lithium sulfur battery as high-energy density energy storage system, and in preparing electrode sheet (claimed). ADVANTAGE - The method: uses anode polysulfide buffer layer to form good contact effect and active reaction interface; eliminates the natural degradation of the lithium sulfide battery; reduces the interface impedance between the coating and the anode; promotes reversible conversion of the discharge product to the active sulfur; and improves active sulfur utilization rate and the whole performance of the battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMs are also included for: Anode polysulfide buffer layer for improving cycle performance of lithium sulfur battery. Electrode sheet. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic illustration for the method for preparing anode polysulfide buffer layer for improving cycle performance of lithium sulfur battery .