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公开(公告)号：US20230317939A1
公开(公告)日：2023-10-05
申请号：US18003881
申请日：2021-07-12
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Kiyong AHN , Do-Wook JUN , Youngsun KONG , Seonyoung KWON , Minkyu KIM , Min Ju KIM , Dookyun LEE , Kijoo HONG
IPC: H01M4/525 , H01M10/052 , H01M4/131 , H01M4/505 , C01G53/00
CPC classification number: H01M4/525 , H01M10/052 , H01M4/131 , H01M4/505 , C01G53/42 , H01M2004/021
Abstract: According to an embodiment, provided is a cathode active material for a lithium secondary battery, the cathode active material including a nickel-based composite metal oxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a central portion and a surface portion, the surface portion includes a nickel-based composite metal oxide doped with manganese, and an amount of manganese present in the grain boundaries of the plurality of primary particles present in the surface portion is greater than an amount of manganese present inside the primary particles.
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2.发明申请公开(公告)号：US20250046810A1
公开(公告)日：2025-02-06
申请号：US18792838
申请日：2024-08-02
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Young-Ki KIM , Youngsun KONG , Sung Ho CHOO , Seok Mun KANG , Jaesang YOON , Sungwook DOO , Gwiwoon KANG , Do-Wook JUN , Byungwuk KANG , Jaeyong JEONG
Abstract: Disclosed are positive electrode active materials, positive electrodes, and a rechargeable lithium battery including the same. Some of the positive electrode active materials include particles of a first positive electrode active material including lithium cobalt-based oxide, and particles of a second positive electrode active material including a layered lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium, wherein the first positive electrode active material or the second positive electrode active material includes a coating layer including yttrium.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20250046811A1
公开(公告)日：2025-02-06
申请号：US18793430
申请日：2024-08-02
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Young-Ki KIM , Sung Ho CHOO , Youngsun KONG , Seok Mun KANG , Jaesang YOON , Sungwook DOO , Gwiwoon KANG , Do-Wook JUN , Byungwuk KANG , Jaeyong JEONG
Abstract: A positive electrode active material including a first positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on about 100 mol % of a total metal excluding lithium and including secondary particles made by agglomerating a plurality of primary particles wherein an average particle diameter (D50) of the secondary particle is about 10 μm to about 20 μm, a second positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of greater than or equal to about 60 mol % based on about 100 mol % of a total metal excluding lithium and including single particles wherein an average particle diameter (D50) of each of the single particles is about 2 μm to about 8 μm, and a third positive electrode active material includes particles including lithium transition metal phosphate.
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公开(公告)号：US20240178455A1
公开(公告)日：2024-05-30
申请号：US18461073
申请日：2023-09-05
Inventor： Wonmo SEONG , Youngsun KONG , Seok Mun KANG , Jaesang YOON , Naoyuki HASE , Do-Wook JUN , Jongsoon KIM , Yongseok LEE
IPC: H01M10/0569 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M10/0567 , H01M10/44
CPC classification number: H01M10/0569 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M10/0567 , H01M10/446 , H01M2004/028
Abstract: Provided is a rechargeable lithium battery including an electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an additive; a positive electrode including a positive electrode active material; and a negative electrode including a negative electrode active material, wherein the additive includes one or more of a compound represented by Chemical Formula 1A and a compound represented by Chemical Formula 1B, the positive electrode active material includes a lithium nickel manganese-based oxide represented by Chemical Formula 2, and a charging upper limit voltage is about 4.4 V to about 4.7 V. Chemical Formula 1A and Chemical Formula 1B are as defined in the specification.
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公开(公告)号：US20240409434A1
公开(公告)日：2024-12-12
申请号：US18736610
申请日：2024-06-07
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Sung Ho CHOO , Young-Ki KIM , Youngsun KONG , Seok Mun KANG , Jaesang YOON , Sungwook DOO , Gwiwoon KANG , Do-Wook JUN , Byungwuk Kang , Jaeyong JEONG
IPC: C01G53/00 , H01M10/0525
Abstract: A positive electrode active material of a rechargeable lithium battery may include a core particle including a lithium nickel-manganese-aluminum-based composite oxide, and a coating layer disposed on a surface of the core particle and including aluminum, wherein a nickel content of the core particle is about 60 mol % to about 80 mol % and an aluminum content of the core particle is about 1 mol % to about 3 mol % based on about 100 mol % of a total metal excluding lithium, and an aluminum content of the coating layer is about 0.1 mol % to about 2 mol % based on about 100 mol % of the total metal excluding lithium.
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6.发明公开公开(公告)号：US20240101443A1
公开(公告)日：2024-03-28
申请号：US18003886
申请日：2021-07-12
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Kiyong AHN , Do-Wook JUN , Youngsun KONG , Seonyoung KWON , Min Ju KIM , Dookyun LEE , Kijoo HONG
IPC: C01G53/00
CPC classification number: C01G53/006 , C01P2004/03 , C01P2004/10 , C01P2004/84 , C01P2006/40
Abstract: Provided is a positive electrode active material precursor for a rechargeable lithium battery including a nickel-based composite metal hydroxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a central portion and a surface portion, and the surface portion includes a primary particle coated with manganese oxide, manganese hydroxide, or a mixture thereof.
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公开(公告)号：US20230387406A1
公开(公告)日：2023-11-30
申请号：US18153080
申请日：2023-01-11
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Youngsun KONG , Wonmo SEONG , Seok Mun KANG , Naoyuki HASE , Jaesang YOON , Do-Wook JUN
IPC: H01M4/525 , H01M4/505 , H01M10/0525 , C01G53/00
CPC classification number: H01M4/525 , H01M4/505 , H01M10/0525 , C01G53/50 , H01M2004/021
Abstract: A positive active material for rechargeable lithium batteries is provided to include: a first positive active material including a layered cobalt-free lithium nickel-based composite oxide, being in a form of a secondary particle in which a plurality of primary particles are aggregated, and having an average particle diameter of about 8 μm to about 20 μm; and a second positive active material including a layered cobalt-free lithium nickel-based composite oxide, being in a form of a single particle, and having an average particle diameter of about 1 μm to about 7 μm, wherein a molar amount of nickel based on the total molar amount of elements excluding lithium and oxygen in the second positive active material is about 1 mol % to about 10 mol % more than a molar amount of nickel based on the total molar amount of elements excluding lithium and oxygen in the first positive active material.
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