POLYMER-SULFUR COPOLYMER, METHOD FOR PREPARING the SAME, AND LITHIUM-SULFUR BATTERY COMPRISING the SAME

Abstract

The present invention relates to a polymer-sulfur copolymer, a method of preparing the same, and a lithium-sulfur battery comprising the same. In the case of the polymer-sulfur copolymer of the present invention, since the carrier is polymerized, the carrier is unlikely to be eluted, and since the sulfur is covalently bonded to the polymer and uniformly distributed in a specific size in the copolymer, the problem of polysulfide elution can be improved when used as a positive active material of the lithium-sulfur battery. In addition, the polymer-sulfur copolymer of the present invention has a high sulfur impregnation amount, thereby making it possible to realize a high-capacity battery.