Sulfur-carbon composite comprising a highly graphitic carbonaceous material for a lithium-sulfur battery and process for its production

摘要

The present invention comprises a high graphitic carbon material and sulfur wherein the high graphitic carbon material has a high graphitization degree, characterized in that the ratio of the intensity of the G band to the intensity of the D band in the Raman spectrum is greater than 1.0, The material is a core-shell material having a conductive core coated with a graphite microporous carbon layer, or a graphite microporous carbon layer, wherein the sulfur is a sulfur-carbon composite encapsulated within the porous structure of the high graphitic carbon material, Carbon composite, and a lithium-sulfur battery, and a method for producing the sulfur-carbon composite.