▎ 摘　　要

NOVELTY - A carbon-sulfur composite material preparing method involves taking graphene oxide and surfactant, and dissolving carbon source in water, and mixing to obtain a mixture. The mixture is incubated at 170-200 degrees C for 12-18 hours and cooled to obtain a precursor product. The precursor product is filtered, dried and put in a nitrogen or argon protective atmosphere, calcined and cooled to obtain graphene sheet structure microporous carbon support material. The microporous carbon material and sublimed sulfur powder are uniformly mixed, incubation closed and cooled to obtain the finished product. USE - Method for preparing a carbon-sulfur composite material that is utilized for a lithium-sulfur battery cathode (claimed). ADVANTAGE - The composite material can be prepared in a simple, easy and economical manner, provides high charging-discharging specific capacity and excellent cycling performance of the battery, and is suitable for mass production. DETAILED DESCRIPTION - A carbon-sulfur composite material preparing method involves taking graphene oxide and surfactant, and dissolving carbon source in water, and mixing to obtain a mixture. The mixture is incubated at 170-200 degrees C for 12-18 hours and cooled to obtain a precursor product. The precursor product is filtered, dried and put in a nitrogen or argon protective atmosphere at 700-900 degrees C, and calcined for 1-3 hours and cooled to obtain graphene sheet structure microporous carbon support material. The microporous carbon material and sublimed sulfur powder are uniformly mixed in a weight ratio of 1:0.5-3 at 150-170 degrees C and incubation closed for 8-16 hours, and cooled to obtain the finished product.