▎ 摘　　要

NOVELTY - A graphite alkyne material modified membrane preparing method involves dissolving a graphene or derivative monomer containing an alkyne bond in an organic solvent, placing the commercial separator as a substrate in a copper foil in the reaction solution under certain condition, depositing the monomer containing the alkyne bond uniformly on the surface of the separator under copper catalysis and washing and drying to obtain the finished product. USE - Method for preparing graphite alkyne material modified membrane that is utilized in lithium sulfur battery (claimed). ADVANTAGE - The graphite alkyne material modified membrane has high electronic conductivity, recycle stability and enhanced capacity and circulation performance of energy storage device, can reduce the shuttle effect of polysulfide in the electrochemical reaction process, and can be prepared in simple and easy manner.