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11.发明申请公开(公告)号：US20250046792A1
公开(公告)日：2025-02-06
申请号：US18792466
申请日：2024-08-01
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Young-Ki KIM , Sung Ho CHOO , Youngsun KONG , Seok Mun KANG , Jaesang YOON , Sungwook DOO , Gwiwoon KANG , Dowook JUN , Byungwuk KANG , Jaeyong JEONG
Abstract: A positive electrode active material includes: a first positive electrode active material including a lithium nickel-manganese composite oxide having a nickel content of at least about 60 mol % based on a total metal excluding lithium and being in a form of secondary particles each including a plurality of primary particles; and a second positive electrode active material including a lithium nickel-manganese-based composite oxide having a nickel content of at least about 60 mol % based on a total metal excluding lithium and being in a form of single particles and a coating layer on the surface of the single particle and containing aluminum and yttrium, an aluminum content of the coating layer being about 0.1 mol % to about 2 mol % and an yttrium content of the coating layer being about 0.1 mol % to about 1 mol %, based on a total metal excluding lithium in the second positive electrode active material.
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公开(公告)号：US20240413315A1
公开(公告)日：2024-12-12
申请号：US18735084
申请日：2024-06-05
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Sungwook DOO , Youngsun KONG , Young-Ki KIM , Sung Ho CHOO , Seok Mun KANG , Jaesang YOON , Gwiwoon KANG , Dowook JUN , Byungwuk KANG , Jaeyong JEONG
Abstract: A positive electrode active material, a method of preparing the same, a positive electrode and a rechargeable lithium battery including the same are provided. The positive electrode active material includes a core particle including lithium nickel-manganese-aluminum-based composite oxide and a coating layer disposed on a surface of the core particles and containing aluminum and yttrium, wherein a nickel content (e.g., amount) in the core particle is greater than or equal to about 60 mol % based on 100 mol % of a total metal excluding lithium in the positive electrode active material, and an aluminum content (e.g., amount) of the coating layer is about 0.1 mol % to about 2 mol %, and a yttrium content (e.g., amount) of the coating layer is about 0.05 mol % to about 1 mol %, each based on 100 mol % of the total metal excluding lithium in the positive electrode active material.
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13.发明公开公开(公告)号：US20240136505A1
公开(公告)日：2024-04-25
申请号：US17958203
申请日：2022-09-30
Inventor： Arumugam MANTHIRAM , Youngjin KIM , Hanseul Kim , Wonmo SEONG , Youngsun KONG
CPC classification number: H01M4/366 , C01G53/42 , H01M4/483 , H01M4/525 , H01M4/5825 , H01M10/052 , H01M2004/028
Abstract: A active material for a rechargeable lithium battery, a manufacturing method, and a rechargeable lithium battery are provided, the positive active material including lithium nickel-based composite oxide particles having a molar content (e.g., amount) of nickel of greater than or equal to about 80 mol % based on the total element excluding lithium and oxygen and containing at least one element selected from B, Sb, and Nb, a first coating layer disposed on the surface of the particles and containing at least one element selected from B, Sb, and Nb, and a second coating layer disposed on the first coating layer and containing a metal phosphate.
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14.发明公开公开(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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公开(公告)号：US20220384801A1
公开(公告)日：2022-12-01
申请号：US17655961
申请日：2022-03-22
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Youngsun KONG , Kiyong AHN , Seonyoung KWON , Min Ju KIM , Dookyun LEE , Dowook JUN , Kijoo HONG
IPC: H01M4/525 , H01M4/505 , H01M4/36 , H01M4/04 , H01M10/0525
Abstract: A positive active material includes a nickel-based composite metal oxide having the form of secondary particles in which a plurality of primary particles are agglomerated, where each secondary particle includes a core and a shell, the primary particles of the shell are coated with a manganese-containing nickel-based composite metal oxide, and the manganese-containing nickel-based composite metal oxide has a layered structure.
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Patent Agency Ranking
公开(公告)号：US20250140812A1
公开(公告)日：2025-05-01
申请号：US18932210
申请日：2024-10-30
Applicant: Samsung SDI Co., Ltd.
Inventor： Sung Ho CHOO , Young-Ki KIM , Youngsun KONG , Seok Mun KANG , Jaesang YOON , Sungwook DOO , Dowook JUN , Gwiwoon KANG , Byungwuk KANG , Jaeyong JEONG
Abstract: A positive electrode active material, a method of preparing the same, a positive electrode, and a rechargeable lithium battery including the same are disclosure. The positive electrode active material includes core particles including a layered lithium nickel-manganese-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol % based on 100 mol % of a total metal in the positive electrode active material excluding lithium, and a coating layer located on the surface of the core particles and containing Al, wherein an Al content (e.g., amount) of the coating layer is about 0.5 mol % to about 1.5 mol % based on 100 mol % of a total metal in the layered lithium nickel-manganese-based composite oxide excluding lithium, and the coating layer has a fiber shape (e.g., in a form of fibers, having a fibrous structure, etc.).
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公开(公告)号：US20250140811A1
公开(公告)日：2025-05-01
申请号：US18930911
申请日：2024-10-29
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Seok Mun KANG , Dowook JUN , Young-Ki KIM , Youngsun KONG , Sungwook DOO , Sung Ho CHOO , Jaesang YOON , Gwiwoon KANG , Byungwuk KANG , Jaeyong JEONG
Abstract: A positive electrode active material includes a plurality of core particles including a layered lithium nickel-manganese-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol % based on 100 mol % of a total metal composition of the lithium nickel-manganese-based composite oxide excluding lithium, and a coating layer located on the surface of the core particle and containing Al and Ti. Also disclosed are a method of preparing the positive electrode active material, and a positive electrode and rechargeable lithium battery including the same.
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公开(公告)号：US20250136468A1
公开(公告)日：2025-05-01
申请号：US18929014
申请日：2024-10-28
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Sung Ho CHOO , Young-Ki KIM , Youngsun KONG , Seok Mun KANG , Jaesang YOON , Sungwook DOO , Gwiwoon KANG , Dowook JUN , Byungwuk KANG , Jaeyong JEONG
Abstract: Disclosed are a positive electrode active material, a method of preparing the same, a positive electrode, and a rechargeable lithium battery, the positive electrode active material including core particles 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 in the layered lithium nickel-manganese-based composite oxide, and a coating layer on the surface of the core particle and including Al, wherein an Al content based on a total of 100 at % of Ni, Mn, and Al on a surface of the positive electrode active material is about 20 at % to about 33 at %.
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公开(公告)号：US20250070136A1
公开(公告)日：2025-02-27
申请号：US18814098
申请日：2024-08-23
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Byungwuk KANG , Sungwook DOO , Young-Ki KIM , Sung Ho CHOO , Dowook JUN , Gwiwoon KANG , Jaeyong JEONG , Youngsun KONG , Seok Mun KANG , Jaesang YOON
IPC: H01M4/36 , H01M4/02 , H01M4/04 , H01M4/525 , H01M10/0525
Abstract: A positive electrode active material includes a core particle including a layered lithium nickel-manganese-based composite oxide, a first coating layer provided on the surface of the core particle and including Al, and a second coating layer provided on the first coating layer and including Ni. A method for preparing a positive electrode active material includes: mixing a layered nickel-manganese composite hydroxide and a lithium raw material and performing a first heat treatment to obtain a lithium nickel-manganese-based composite oxide, adding an aluminum (Al) raw material to an aqueous solvent, adding the lithium nickel-manganese composite oxide thereto and mixing them, then adding a nickel (Ni) raw material and mixing them, and drying the mixture and performing a second heat treatment.
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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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