Positive electrode active material for lithium secondary battery and lithium secondary battery comprising same

• Main Authors: HWANGBO GEUN, KIM JEONG-HOON, KIM YOUNG-SANG, HAN CHANG JOO, NAM SANG CHEOL
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to a positive electrode active material for a lithium secondary battery and a lithium secondary battery comprising the same, in which the battery characteristics of a high-capacity positive electrode material are improved by simultaneously doping a tungsten (W) element having an excellent effect on improving conductivity and a boron (B) element located on the surface to suppress a side reaction between residual lithium and an electrolyte, and a lithium secondary battery comprising the same. 本发明涉及锂二次电池正极活性材料及包含该正极活性材料的锂二次电池，通过同时掺杂对提高导电率具有优异效果的钨(W)元素和位于表面抑制残留锂与电解液的副反应的硼(B)元素，以改善高容量正极材料的电池特性。