公开(公告)号：EP4456188A1

公开(公告)日：2024-10-30

申请号：EP22911780.9

申请日：2022-12-16

申请人： POSCO Holdings Inc. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  Posco Future M Co., Ltd

发明人： YU, Byong Yong ,  HONG, Kijoo ,  SONG, Jung Hoon ,  LEE, Sanghyuk ,  CHOI, Kwon Young ,  HAN, Chang Joo ,  NAM, Sang Cheol

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M10/052 ,  C01G53/00 ,  H01M4/02

摘要： The present exemplary embodiments relate to a positive active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same. The positive active material for a lithium secondary battery according to an exemplary embodiment includes first lithium metal oxide that contains nickel, cobalt, manganese, and doping elements, is in the form of single particles, and has a unit cell volume of 101.50 Å or more.

公开(公告)号：EP4040542A1

公开(公告)日：2022-08-10

申请号：EP19947944.5

申请日：2019-10-02

申请人： POSCO ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

发明人： KIM, Junghoon ,  HAN, Chang Joo ,  KIM, Young Sang ,  NAM, Sang Cheol ,  HWANGBO, Geun

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/36 ,  H01M10/052

摘要： It is related to a positive electrode active material for lithium secondary battery, and to a lithium secondary battery containing the same. To improve the battery characteristics of high-capacity positive electrode materials by simultaneously doping tungsten (W) element, which has an excellent effect on electrical conductivity, and boron (B) element, which is positioned on the surface to suppress the negative reaction of residual lithium and electrolyte solution.