▎ 摘　　要

NOVELTY - Preparing a carbonized molecular organic framework-regenerated graphene oxide (MOF-rGO) composite film separator for lithium-sulfur batteries, comprises (1) placing ZIF-67-rGO into a tube furnace under the protection of nitrogen, heating to 450℃, 750℃, and 1050℃ at 10℃/minute for 8 hours to obtain carbonized ZIF-67-rGO, (2) mixing the carbonized ZIF67-rGO and polyvinylidene fluoride at a ratio of 9:1 and adding N-methylpyrrolidone, and performing ultrasonic treatment to obtain the suspension, and (3) pumping the suspension onto the polypropylene diaphragm by vacuum filtration, and drying in a vacuum drying oven to obtain a functionalized modified diaphragm. USE - The method for preparing carbonized molecular organic framework-regenerated graphene oxide composite film separator useful for lithium-sulfur batteries. ADVANTAGE - The modified diaphragm shows excellent cycle performance and multiplying power performance when it is used for a sulfur lithium battery, inhibits polysulfide shuttling and improves the electrochemical lithium of the sulfur battery.