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    Lithium Secondary Battery and Production Method Thereof
    1.
    发明申请
    Lithium Secondary Battery and Production Method Thereof 有权

    公开(公告)号：US20220102731A1

    公开(公告)日：2022-03-31

    申请号：US17422583

    申请日：2020-01-16

    Applicant: LG Chem, Ltd.

    Inventor： Min Kyu You ,  Kyung Lok Lee ,  Ji A Shin ,  Sang Soon Choi

    IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/02

    Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium secondary battery includes: a battery case having an interior region, a separator, wherein the separator divides the interior region into a first region and a second region, a positive electrode formed in the first region and including a positive electrode active material and positive electrode current collector particles; and a negative electrode formed in the second region and including a negative electrode active material and negative electrode current collector particles.

    Lithium secondary battery and production method thereof
    2.
    发明授权
    Lithium secondary battery and production method thereof 有权

    公开(公告)号：US12183930B2

    公开(公告)日：2024-12-31

    申请号：US17422583

    申请日：2020-01-16

    Applicant: LG Chem, Ltd.

    Inventor： Min Kyu You ,  Kyung Lok Lee ,  Ji A Shin ,  Sang Soon Choi

    IPC: H01M4/66 ,  H01M4/02 ,  H01M4/04 ,  H01M10/0525 ,  H01M50/105

    Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium secondary battery includes: a battery case having an interior region, a separator, wherein the separator divides the interior region into a first region and a second region, a positive electrode formed in the first region and including a positive electrode active material and positive electrode current collector particles; and a negative electrode formed in the second region and including a negative electrode active material and negative electrode current collector particles.

    Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    3.
    发明申请
    Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same 有权

    公开(公告)号：US20220140320A1

    公开(公告)日：2022-05-05

    申请号：US17427815

    申请日：2020-08-11

    Applicant: LG Chem, Ltd.

    Inventor： Joo Hong Jin ,  Min Kyu You ,  Sun Sik Shin ,  Kyung Lok Lee ,  Ji A Shin

    IPC: H01M4/36 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525

    Abstract: A positive electrode includes: a positive electrode active material layer formed on a surface of a positive electrode current collector, including two types of positive electrode active materials with different average particle diameters (D50), a conductive material, and a binder; and a carbon nanotube coating layer formed on a surface of the positive electrode active material layer, including carbon nanotubes and a binder: The two types of positive electrode active materials include first positive electrode active material particles which have an average particle diameter (D50) of 8 μm to 20 μm and second positive electrode active material particles in the form of a single particle which have a smaller average particle diameter (D50) than the average particle diameter (D50) of the first positive electrode active material particles, and the positive electrode active material layer and the carbon nanotube coating layer are formed in a thickness ratio of 90:10 to 99:1.

    Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    5.
    发明申请
    Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same 有权

    公开(公告)号：US20220131155A1

    公开(公告)日：2022-04-28

    申请号：US17428407

    申请日：2020-08-11

    Applicant: LG Chem, Ltd.

    Inventor： Joo Hong Jin ,  Min Kyu You ,  Sun Sik Shin ,  Kyung Lok Lee ,  Ji A Shin

    IPC: H01M4/62 ,  H01M10/052 ,  H01M4/36 ,  H01M4/131 ,  H01M4/525 ,  H01M4/02

    Abstract: A positive electrode includes: a positive electrode active material layer formed on a surface of a positive electrode current collector, including two types of positive electrode active materials with different average particle diameters (D50), a conductive material, and a binder; and a carbon-based coating layer formed on a surface of the positive electrode active material layer. The two types of positive electrode active materials are each represented by Chemical Formula 1 below. The carbon-based coating layer includes a sphere-type conductive material and a binder, where the binder is included in an amount of 5 parts by weight or more and less than 10 parts by weight with respect to 100 parts by weight of the carbon-based coating layer. Li1+aNixCoyMzO2   [Chemical Formula 1] In Chemical Formula 1, 0≤a≤0.5, 0

    Method of Preparing Positive Electrode Active Material for Lithium Secondary Battery and Positive Electrode Active Material Prepared by the Method
    6.
    发明申请
    Method of Preparing Positive Electrode Active Material for Lithium Secondary Battery and Positive Electrode Active Material Prepared by the Method 有权

    公开(公告)号：US20220119273A1

    公开(公告)日：2022-04-21

    申请号：US17421606

    申请日：2020-01-07

    Applicant: LG Chem, Ltd.

    Inventor： Ji A Shin ,  Kyung Lok Lee ,  Min Kyu You ,  Sang Soon Choi

    IPC: C01G53/04 ,  H01M10/052

    Abstract: A method of preparing a positive electrode active material includes mixing a lithium raw material with a high nickel-containing transition metal hydroxide containing nickel in an amount of 60 mol % or more based on a total number of moles of the transition metal hydroxide and sintering the mixture to prepare a positive electrode active material, wherein the sintering includes a sintering step of heat-treating at 700° C. to 900° C. for 8 hours to 12 hours, a cooling step of cooling to room temperature, and an aging step of having a holding time when a temperature reaches a specific point during the cooling step. A positive electrode active material which is prepared by the method and has a reduced moisture content, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode active material are also provided.

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