CHALCOGENIDE ANODE MATERIALS FOR HIGH CAPACITY LITHIUM SECONDARY BATTERIES

摘要

PURPOSE: A chalcogenide negative electrode material is provided to effectively control stress due to volume expansion at charging and discharging Sn and to fundamentally prevent irreversible reaction forming Li2O. CONSTITUTION: A chalcogenide negative electrode material comprises Sn and a chalcogenide. The chalcogenide includes Ge and S. A manufacturing method of a negative electrode material for a lithium secondary battery comprises a step of manufacturing a mixture by mixing Sn and a chalcogenide material; a step of forming a composite by melting the mixture and cooling the melted material; a step of manufacturing a powder by pulverizing the composite; and a step of manufacturing slurry by mixing the powder with a binder and a solvent.