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    Positive Electrode and Secondary Battery Including the Same
    1.
    发明申请
    Positive Electrode and Secondary Battery Including the Same 有权

    公开(公告)号：US20240387818A1

    公开(公告)日：2024-11-21

    申请号：US18696039

    申请日：2022-10-07

    Applicant: LG Energy Solution, Ltd.

    Inventor： Woo Hyung Cho ,  Min Ji Heo ,  Sung Bin Park

    IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/62 ,  H01M10/0525

    Abstract: A positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material and a conductive material. The conductive material includes a linear conductive material. The positive electrode active material includes a lithium composite transition metal oxide containing nickel (Ni), cobalt (Co), and manganese (Mn). The lithium composite transition metal oxide is in the form of a single particle. The positive electrode active material has an average particle diameter (D50) of 2 μm to 10 μm. The positive electrode satisfies a specific equation for a BET specific surface area and an amount of the positive electrode active material and the linear conductive material.

    Method of Preparing Positive Electrode Active Material for Secondary Battery
    5.
    发明申请
    Method of Preparing Positive Electrode Active Material for Secondary Battery 有权

    公开(公告)号：US20220246925A1

    公开(公告)日：2022-08-04

    申请号：US17627243

    申请日：2020-08-05

    Applicant: LG Energy Solution, Ltd.

    Inventor： Eun Sol Lho ,  Sang Min Park ,  Wang Mo Jung ,  Sung Bin Park ,  Seul Ki Kim ,  Wen Xiu Wang

    IPC: H01M4/525 ,  H01M4/131 ,  H01M4/62

    Abstract: A method of preparing a positive electrode active material for a secondary battery, is disclosed herein. In some embodiments, a method includes mixing a positive electrode active material precursor, a lithium source material, a first firing additive, a second firing additive, and a third firing additive a to form a mixture, wherein the positive electrode active material precursor contains nickel, cobalt, and manganese and has a nickel content of 60 mol % or more relative to a total molar amount of metals in the positive electrode active material precursor, and performing primary firing of the mixture to form a lithium transition metal oxide, 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.

    Positive Electrode Active Material for Secondary Battery and Lithium Secondary Battery Including the Same
    10.
    发明申请
    Positive Electrode Active Material for Secondary Battery and Lithium Secondary Battery Including the Same 有权

    公开(公告)号：US20230095804A1

    公开(公告)日：2023-03-30

    申请号：US17795049

    申请日：2021-01-19

    Applicant: LG Energy Solution, Ltd.

    Inventor： Sang Min Park ,  Eun Sol Lho ,  Sung Bin Park ,  Seul Ki Kim ,  Wen Xiu Wang ,  Wang Mo Jung

    IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505

    Abstract: A positive electrode active material, and a positive electrode and a lithium secondary battery including the same are disclosed herein. In some embodiments, a positive electrode active material includes a lithium composite transition metal oxide containing nickel, cobalt, and manganese and having a nickel content for 60 mol % or more, based on metals (M) excluding lithium, and is in the form of single particles having an average particle diameter (D50) of 1 to 10 μm, wherein a 100-nm region extending from the surface toward the center of a single particle has crystal structures of a Fd3M and a Fm3m space group, and a phase ratio is 0.2 to 0.7, which is a ratio of a first portion of a maximum straight length of the 100-nm region occupied by the crystal structure of the Fd3M space group to a second portion occupied by the crystal structure of the Fm3m space group.

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