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公开(公告)号：US20250118733A1
公开(公告)日：2025-04-10
申请号：US18983863
申请日：2024-12-17
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Kiyong AHN , Taehee KWAK , Jeuk HA , Seonyoung KWON , Yumi SONG , Eunok OH , Soonrewl LEE , Naoyuki HASE
IPC: H01M4/36 , C01G53/00 , H01M4/02 , H01M4/525 , H01M10/0525
Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.
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公开(公告)号：US20230317923A1
公开(公告)日：2023-10-05
申请号：US18329199
申请日：2023-06-05
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Kiyong AHN , Taehee KWAK , Jeuk HA , Seonyoung KWON , Yumi SONG , Eunok OH , Soonrewl LEE , Naoyuki HASE
IPC: H01M4/36 , C01G53/00 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/364 , C01G53/42 , H01M4/525 , H01M10/0525 , C01P2002/52 , C01P2002/72 , C01P2002/74 , C01P2004/03 , C01P2004/50 , C01P2004/53 , C01P2004/61 , C01P2006/10 , C01P2006/40 , H01M2004/021
Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.
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公开(公告)号：US20220384780A1
公开(公告)日：2022-12-01
申请号：US17657316
申请日：2022-03-30
Applicant: Samsung SDI Co., Ltd.
Inventor： Jungsue JANG , Donghyun KIL , Minhan KIM , Jinyoung KIM , Jinhwa KIM , Jihyun SEOG , Jaeha SHIM , Kiyong AHN , Donggyu CHANG , Youngjoo CHAE , Aram CHOI , Jeuk HA
Abstract: Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same.
The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single crystal form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.-
公开(公告)号：US20240363853A1
公开(公告)日：2024-10-31
申请号：US18772027
申请日：2024-07-12
Applicant: Samsung SDI Co., Ltd.
IPC: H01M4/525 , H01M4/02 , H01M4/505 , H01M10/0525 , H01M10/44
CPC classification number: H01M4/525 , H01M4/505 , H01M10/0525 , H01M10/44 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, the second compound having a smaller particle size than that of the first compound, wherein cation mixing in the surface portion of the positive active material is less than or equal to about 7.5%, cation mixing in the bulk of the positive active material is less than or equal to about 3%, a residual lithium content on the surface of the positive active material is less than or equal to about 3,000 ppm, and the first compound and the second compound each independently include 90 at % to about 98 at % of Ni with respect to the metals excluding Li.
Lia1Nix1Coy1M11-x1-y1O2, Chemical Formula 1
Lia2Nix2Coy2M21-x2-y2O2. Chemical Formula 2-
公开(公告)号：US20240222602A1
公开(公告)日：2024-07-04
申请号：US18603865
申请日：2024-03-13
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Jungsue JANG , Donghyun KIL , Minhan KIM , Jinyoung KIM , Jinhwa KIM , Jihyun SEOG , Jaeha SHIM , Kiyong AHN , Donggyu CHANG , Youngjoo CHAE , Aram CHOI , Jeuk HA
CPC classification number: H01M4/364 , C01G53/40 , C01G53/44 , H01M4/0471 , H01M4/366 , H01M4/505 , H01M4/525 , H01M2004/021 , H01M2004/028
Abstract: Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single particle form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.
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Patent Agency Ranking
公开(公告)号：US20220093913A1
公开(公告)日：2022-03-24
申请号：US17186502
申请日：2021-02-26
Applicant: Samsung SDI Co., Ltd.
Inventor： Kiyong AHN , Taehee KWAK , Jeuk HA , Seonyoung KWON , Yumi SONG , Eunok OH , Soonrewl LEE , Naoyuki HASE
IPC: H01M4/36 , H01M4/525 , H01M10/0525 , C01G53/00
Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.
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公开(公告)号：US20250167228A1
公开(公告)日：2025-05-22
申请号：US18952931
申请日：2024-11-19
Applicant: Samsung SDI Co., Ltd.
Inventor： Seungyeon CHOI , Soohyeon KIM , Dongwook SHIN , Soonkie HONG , Aram CHOI , Jeuk HA , Minah CHA , Minhan KIM
Abstract: A positive electrode active material includes a layered lithium nickel-based composite oxide, wherein, based on 100 mol % of a total mole of metals of the layered lithium nickel-based composite oxide excluding lithium, a nickel content is greater than or equal to about 60 mol %, an aluminum content is about 0.8 mol % to about 1.5 mol %, a zirconium content is about 0.1 mol % to about 0.3 mol %, and a ratio of the aluminum content relative to the zirconium content (Al/Zr) is greater than or equal to about 5, and the positive electrode active material is in a form of a single particle with an average particle diameter (D50) of about 1 μm to about 4 μm.
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公开(公告)号：US20250149558A1
公开(公告)日：2025-05-08
申请号：US18940619
申请日：2024-11-07
Applicant: Samsung SDI Co., Ltd.
Inventor： Aram CHOI , Dongwook SHIN , Soonkie HONG , Seungyeon CHOI , Minah CHA , Soohyeon KIM , Jeuk HA , Minhan KIM
IPC: H01M4/36 , C01G53/00 , H01M4/02 , H01M4/525 , H01M10/052
Abstract: A positive electrode active material, a preparation method thereof, and a positive electrode including the same, and a rechargeable lithium battery are provided. The positive electrode active material including particles having a core of a lithium nickel-based composite oxide, and a nickel reduction layer arranged on the surface of the core and containing nickel with an oxidation number of less than about 3+. The nickel reduction layer has a thickness of less than, or equal to, about 10 nanometer from a surface of the particle to a center of the particle.
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公开(公告)号：US20250125339A1
公开(公告)日：2025-04-17
申请号：US18984403
申请日：2024-12-17
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Kiyong AHN , Taehee KWAK , Jeuk HA , Seonyoung KWON , Yumi SONG , Eunok OH , Soonrewl LEE , Naoyuki HASE
IPC: H01M4/36 , C01G53/42 , H01M4/02 , H01M4/525 , H01M10/0525
Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.
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公开(公告)号：US20210036319A1
公开(公告)日：2021-02-04
申请号：US16940637
申请日：2020-07-28
Applicant: Samsung SDI Co., Ltd.
IPC: H01M4/525 , H01M10/0525 , H01M10/44 , H01M4/505
Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, the second compound having a smaller particle size than that of the first compound, wherein cation mixing in the surface portion of the positive active material is less than or equal to about 7.5%, cation mixing in the bulk of the positive active material is less than or equal to about 3%, a residual lithium content on the surface of the positive active material is less than or equal to about 3,000 ppm, and the first compound and the second compound each independently include 90 at % to about 98 at % of Ni with respect to the metals excluding Li. Lia1Nix1Coy1M11−x1−y1O2, Chemical Formula 1 Lia2Nix2Coy2M21−x2−y2O2. Chemical Formula 2
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