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    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL
    1.
    发明公开
    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL 审中-公开

    公开(公告)号：EP4129927A1

    公开(公告)日：2023-02-08

    申请号：EP21911586.2

    申请日：2021-12-23

    申请人： LG Energy Solution, Ltd.

    发明人： LEE, Dae Jin ,  PARK, Sang Min ,  KWAK, Min ,  JUNG, Wang Mo ,  HAN, Gi Beom ,  LEE, Sang Wook ,  LHO, Eun Sol ,  DO, Joong Yeop ,  PARK, Kang Joon

    IPC分类号： C01G53/00 ,  H01M4/525 ,  H01M4/505

    摘要： The present invention relates to a method of preparing a positive electrode active material which may ensure surface uniformity and coating uniformity of first and second lithium transition metal oxides included in the positive electrode active material and may improve productivity, wherein the present invention relates to a method of preparing a positive electrode active material which includes a step of (A) mixing a first lithium transition metal oxide having a first Brunauer-Emmett-Teller (BET) specific surface area and a second lithium transition metal oxide having a second BET specific surface area to prepare a mixture and washing the mixture with a washing solution, wherein an amount (parts by weight) of the washing solution based on 100 parts by weight of the mixture satisfies Equation 1 described in the present specification.

    POSITIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME
    4.
    发明公开
    POSITIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME 审中-公开

    公开(公告)号：EP4012804A1

    公开(公告)日：2022-06-15

    申请号：EP20862757.0

    申请日：2020-09-11

    申请人： LG ENERGY SOLUTION, LTD.

    发明人： LHO, Eun Sol ,  PARK, Sang Min ,  PARK, Sung Bin ,  KIM, Seul Ki ,  WANG, Wen Xiu ,  JUNG, Wang Mo

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

    摘要： The present invention relates to a positive electrode material for a secondary battery, the positive electrode material including a first positive electrode active material and a second positive electrode active material, the first positive electrode active material and the second positive electrode active material being single particle types and lithium composite transition metal oxides including nickel, cobalt, and manganese and having a nickel content accounting for 60 mol% or more of total metals except for lithium, wherein the first positive electrode active material has a mean particle diameter (D 50 ) of 3 µm or less and a molar ratio (Li/M) of lithium to the metals (M) except for lithium of 1.10 to 1.20, and the second positive electrode active material has a mean particle diameter (D 50 ) of greater than 3 µm and a molar ratio (Li/M) of lithium to the metals (M) except for lithium of 1.00 to 1.13.

    CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME
    6.
    发明公开
    CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME 审中-公开

    公开(公告)号：EP4235860A1

    公开(公告)日：2023-08-30

    申请号：EP21898754.3

    申请日：2021-11-30

    申请人： LG Energy Solution, Ltd.

    发明人： LEE, Sang Wook ,  LEE, Dae Jin ,  PARK, Sang Min ,  KWAK, Min ,  JUNG, Wang Mo ,  HAN, Gi Beom ,  LHO, Eun Sol ,  DO, Joong Yeop ,  PARK, Kang Joon

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

    摘要： The present invention relates to a cathode active material, and a cathode and a lithium secondary battery, comprising same, the cathode active material capable of realizing a battery having a low disorder of nickel in a crystal structure and high particle strength, and excellent capacity characteristics and capacity retention, and to a cathode active material, and a cathode and a lithium secondary battery, comprising same, the cathode active material comprising: large-particle-diameter lithium transition metal oxide; and small-particle-diameter lithium transition metal oxide having an average particle diameter (D 5o ) smaller than the large-particle-diameter lithium transition metal oxide, wherein the large-particle-diameter lithium transition metal oxide and the small-particle-diameter lithium transition metal oxide each independently have a composition represented by Formula 1 described in the specification and have a crystal grain size of 100-150 nm, a grain size difference between the large-particle-diameter lithium transition metal oxide and the small-particle-diameter lithium transition metal oxide is less than 40 nm, and the Ni-disorder is 1.5% or less.

    CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME
    7.
    发明公开
    CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：EP4064391A1

    公开(公告)日：2022-09-28

    申请号：EP21747147.3

    申请日：2021-01-29

    申请人： LG Energy Solution, Ltd.

    发明人： PARK, Sang Min ,  LHO, Eun Sol ,  PARK, Sung Bin ,  KIM, Seul Ki ,  WANG, Wen Xiu ,  DO, Joong Yeop ,  JUNG, Wang Mo

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

    摘要： The present invention provides a positive electrode active material which includes a lithium transition metal oxide in which nickel (Ni) is included in an amount of greater than 50 mol% based on a total number of moles of transition metals excluding lithium, wherein the positive electrode active material is in a form of single particles, a structure belonging to space group FD3-M and a structure belonging to space group Fm3m are formed in a region of 50 nm or less from a surface of the positive electrode active material in a center direction, and a generation rate of fine powder having an average particle diameter (D 50 ) of 1 µm or less is in a range of 5% to 30% when the positive electrode active material is rolled at 650 kgf/cm 2 , a method of preparing the positive electrode active material, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode active material.

    PREPARATION METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY
    8.
    发明公开
    PREPARATION METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY 审中-公开

    公开(公告)号：EP3984960A1

    公开(公告)日：2022-04-20

    申请号：EP20850171.8

    申请日：2020-08-05

    申请人： LG Energy Solution, Ltd.

    发明人： LHO, Eun Sol ,  PARK, Sang Min ,  JUNG, Wang Mo ,  PARK, Sung Bin ,  KIM, Seul Ki ,  WANG, Wen Xiu

    IPC分类号： C01G53/00 ,  H01M4/525 ,  H01M4/505

    摘要： Provided is a method of preparing a positive electrode active material for a secondary battery, which includes: providing a positive electrode active material precursor containing nickel, cobalt, and manganese and having a nickel content accounting for 60 mol% or more of total metals; and forming a lithium transition metal oxide by mixing the positive electrode active material precursor, a lithium source material, a first firing additive, a second firing additive, and a third firing additive and performing primary firing, wherein the first firing additive is a lithium-containing compound, the second firing additive is a carbonate ion-containing compound, and the third firing additive is a boron-containing compound.