The sulfur loading mode of carbon/sulfur(C/S)composite materials can improve the shuttle effect of polysulfide and increase the capacity of lithium-sulfur batteries.The physical sul-fur loading method is easy to lead to the loss of sulfur during the cycle,and the chemical sulfur loading method is not conducive to the improvement of the magnification performance.The combi-nation of physical sulfur loading and chemical sulfur loading is of great significance to improve the cycle stability and rate performance of C/S Composite materials.The structure and properties of C/S composites prepared by chemical sulfur loading are studied by controlling the sulfur loading mode,which is conducive to realizing stable polysulfide conversion and improving the cycle stabili-ty and rate performance of lithium-sulfur batteries.The results show that the C/S calcined com-posite electrode has good cyclic stability(60%capacity retention under 5C)and rate performance(60 mAh·g-1 20C),which is due to its stable polysulfide conversion ability.
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