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    OCTAHEDRAL LITHIUM MANGANESE-BASED POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING SAME
    1.
    发明公开
    OCTAHEDRAL LITHIUM MANGANESE-BASED POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING SAME 审中-公开

    公开(公告)号：EP3868714A1

    公开(公告)日：2021-08-25

    申请号：EP19889718.3

    申请日：2019-11-01

    申请人： LG ENERGY SOLUTION, LTD.

    发明人： LHO, Eun Sol ,  JUNG, Wang Mo ,  KANG, Min Suk ,  LEE, Sang Wook ,  BAEK, So Ra ,  WANG, Wen Xiu

    IPC分类号： C01G45/12 ,  H01M4/505 ,  H01M4/131 ,  H01M10/052 ,  H01M4/02

    摘要： The present invention relates to a method of preparing an octahedral-structured lithium manganese-based positive electrode active material which includes mixing a manganese raw material, a raw material including doping element M 1 (where the doping element M 1 is at least one element selected from the group consisting of Mg, Al, Li, Zn, B, W, Ni, Co, Fe, Cr, V, Ru, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and Si), and a lithium raw material and sintering the mixture in an oxygen atmosphere to prepare a lithium manganese oxide having an octahedral structure and doped with the doping element M 1 , wherein the sintering includes performing first sintering at 400°C to 700°C for 3 hours to 10 hours and performing second sintering at 700°C to 900°C for 10 hours to 20 hours, an octahedral-structured lithium manganese-based positive electrode active material prepared by the above preparation method, and a positive electrode and a lithium secondary battery which include the positive electrode active material.

    POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING POSITIVE ELECTRODE ACTIVE MATERIAL
    3.
    发明公开
    POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING POSITIVE ELECTRODE ACTIVE MATERIAL 审中-公开

    公开(公告)号：EP3872902A1

    公开(公告)日：2021-09-01

    申请号：EP19890594.5

    申请日：2019-11-01

    申请人： LG ENERGY SOLUTION, LTD.

    发明人： WANG, Wen Xiu ,  JUNG, Wang Mo ,  KANG, Min Suk ,  LEE, Sang Wook ,  BAEK, So Ra ,  LHO, Eun Sol

    IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/131 ,  H01M10/052

    摘要： The present invention relates to a positive electrode active material including a nickel-cobalt-manganese-based lithium transition metal oxide which contains nickel in an amount of 60 mol% or more based on a total number of moles of metals excluding lithium, wherein the nickel-cobalt-manganese-based lithium transition metal oxide is doped with doping element M 1 (where the doping element M 1 is a metallic element including Al) and doping element M 2 (where the doping element M 2 is at least one metallic element selected from the group consisting of Mg, La, Ti, Zn, B, W, Ni, Co, Fe, Cr, V, Ru, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and Si), the nickel-cobalt-manganese-based lithium transition metal oxide includes the doping element M 1 in an amount of 100 ppm to 10,000 ppm, and the doping element M 1 and the doping element M 2 are included in a weight ratio of 50:50 to 99:1, a method of preparing the positive electrode active material, and a positive electrode and a secondary battery which include the positive electrode active material.