MANUFACTURING METHOD OF CARBON SULFUR COMPLEX, CARBON SULFUR COMPLEX MADE BY THE SAME, LITHIUM SULFUR BATTERY INCLUDING THE SAME

摘要

PURPOSE: A carbon sulfur composite is provided to have improved capacity because sulfur is uniformly dispersed in a carbon ball and to have stable lifetime property because an electrode structure is not collapsed even if the sulfur is converted into a liquid phase in charging and discharging process. CONSTITUTION: A manufacturing method of a carbon sulfur composite comprises: a step of preparing a hard carbon ball; a step of mixing the hard carbon ball and sulfur; a step of dipping sulfur into the hard carbon ball by heat-treating the carbon ball and sulfur mixture at a first temperature; a step of cooling the hard carbon ball to a room temperature; a step of heat-treating the hard carbon ball at a second temperature under constant pressure. The carbon sulfur composite comprises 40-50 weight% of sulfur which is uniformly dispersed from the center part to the surface of a particle.