- - Cathode active material for lithium-sulfur battery preparation method thereof and a lithium-sulfur battery comprising the same

摘要

The present invention relates to a positive electrode active material for a lithium-sulfur battery, wherein the positive electrode active material is a composite particle having a core-shell structure, the core portion includes a carbon-sulfur complex, and the shell portion includes a polymer material having ionic conductivity . And the core portion of the composite particle is characterized in that all or at least a part of the surface is covered with the shell portion.