- - LITHIUM-SULFUR RECHARGEABLE BATTERY CONTAINING POROUS CARBON SULFUR COMPOSITE AND MULTI-LAYER SEPARATOR METHOD FOR MANUFACTURING THEREOF

摘要

The present invention relates to a lithium-sulfur secondary battery including a porous carbon-sulfur composite and a multilayer separator, and more particularly, to a method of manufacturing a lithium-sulfur secondary battery by mixing a porous carbon with a sulfur solution to prepare a porous carbon- Comprising the steps of: preparing a positive electrode plate using a porous carbon-sulfur composite as a positive electrode active material; and forming a multilayer separator between the positive electrode plate and the negative electrode plate in the electrolyte, wherein the porous carbon- By applying the composite to a lithium-sulfur secondary battery as a cathode active material, a high electrochemical capacity can be exhibited. Moreover, the use of a multi-layered separator can suppress the precipitation of polysulfide on the surface of a cathode or anode, The efficiency can be improved.