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1.发明公开公开(公告)号：US20240088375A1
公开(公告)日：2024-03-14
申请号：US18347429
申请日：2023-07-05
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Youngjoo CHAE
CPC classification number: H01M4/505 , C01G53/50 , H01M4/131 , H01M4/525 , C01P2004/03 , C01P2006/40 , H01M2004/028
Abstract: A positive active material for a rechargeable lithium battery and rechargeable lithium battery including the same. The positive active material including first positive active material in a form of secondary particles in which a plurality of primary particles are aggregated, and including a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 80 mol % based on the total amount of elements in the lithium nickel-based composite oxide excluding lithium and oxygen, and second positive active material in a form of single particles, including a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 80 mol % based on the total amount of elements in the lithium nickel-based composite oxide of the second positive active material excluding lithium and oxygen wherein the lithium nickel-based composite oxide of the second positive active material includes Ni, Co, Mn, Al, Zr, and Mg.
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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.-
3.发明申请公开(公告)号：US20190148726A1
公开(公告)日：2019-05-16
申请号：US16192729
申请日：2018-11-15
Applicant: Samsung SDI Co., Ltd.
Inventor： Youngjoo CHAE , Kitae KIM , Young-Ki KIM , Jungjoon PARK , Dong-Hwan YU , Soonrewl LEE , Hyerim LEE , Ickkyu CHOI , Soonkie HONG , Kisoo LEE
IPC: H01M4/525 , H01M10/0525 , H01M4/505
Abstract: A positive active material for a rechargeable lithium battery, and a rechargeable lithium battery and a battery module including the same are provided. The positive active material may include a lithium nickel-manganese-cobalt composite oxide with a coating layer on the surface. The coating layer on the surface may include a lithium oxide including Al and/or W, for example, Al and W.
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4.发明公开公开(公告)号：US20240213465A1
公开(公告)日：2024-06-27
申请号：US18366545
申请日：2023-08-07
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Jinhwa KIM , Minhan KIM , Jihyun SEOG , Youngjoo CHAE , Soonrewl LEE , Wooyoung YANG , Ickkyu CHOI , Jongmin KIM , Jongsan IM
CPC classification number: H01M4/525 , C01G53/50 , H01M4/362 , H01M4/505 , H01M4/8882 , H01M10/0525 , H01M10/44 , C01P2006/40 , H01M2004/028 , H01M2220/00
Abstract: Disclosed are a positive active material for a rechargeable lithium battery, and a rechargeable lithium battery including the same. The positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including lithium nickel-based composite oxide wherein in the secondary particle, a plurality of primary particles are aggregated and zirconium on the surface of the secondary particle, and a second positive active material including a single particle including lithium nickel-based composite oxide and zirconium on the surface of the single particle, wherein a ratio of a Zr content (at %) relative to all elements on the surface of the single particle of the second positive active material to a Zr content (at %) to all elements on the surface of the secondary particle of the first positive active material is about 1.5 to about 3.0.
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公开(公告)号：US20210408528A1
公开(公告)日：2021-12-30
申请号：US17359143
申请日：2021-06-25
Applicant: Samsung SDI Co., Ltd.
Inventor： Youngjoo CHAE , Gwiwoon KANG , Youngsun KONG , Sangmi KIM , Youngki KIM , Jinyoung KIM , Jaeyoung JEONG , Soonkie HONG
IPC: H01M4/36 , H01M4/525 , H01M10/0525 , C01G53/00
Abstract: Disclosed herein are a nickel-based lithium metal composite oxide, a method of preparing the same, and a lithium secondary battery including a positive electrode including the same. The nickel-based lithium metal composite oxide includes secondary particles including aggregates of primary particles, wherein a content of nickel in the nickel-based lithium metal composite oxide is 50 mol % or more, based on the total content of transition metals in the nickel-based lithium metal composite oxide, the secondary particles include large secondary particles having a particle size of 10 μm or more and small secondary particles having a particle size of 5 μm or less, and the content of nickel in the large secondary particles is larger than the content of nickel in the small secondary particles.
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Patent Agency Ranking
公开(公告)号：US20210399299A1
公开(公告)日：2021-12-23
申请号：US17348019
申请日：2021-06-15
Applicant: Samsung SDI Co., Ltd.
Inventor： Youngjoo CHAE , Youngki KIM , Jongmin KIM , Soonrewl LEE , Soonkie HONG
IPC: H01M4/525 , H01M4/505 , H01M4/04 , H01M10/0525
Abstract: A nickel-based composite positive electrode active material for a lithium secondary battery is in the form of secondary particles each comprised of a plurality of primary particles, each primary particle of the plurality of primary particles having a core portion formed of a nickel-based lithium metal oxide having a layered phase and a surface portion positioned on the core portion, wherein the surface portion has a spinel phase and the layered phase. A method of preparing the nickel-based composite positive electrode active material, and a lithium secondary battery containing a positive electrode including the nickel-based composite positive electrode active material are also provided.
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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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公开(公告)号：US20240204186A1
公开(公告)日：2024-06-20
申请号：US18480408
申请日：2023-10-03
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Jinhwa KIM , Minhan KIM , Jihyun SEOG , Youngjoo CHAE
IPC: H01M4/525 , H01M4/36 , H01M10/0525
CPC classification number: H01M4/525 , H01M4/366 , H01M10/0525 , H01M2004/028
Abstract: A positive active material includes a first positive active material in a secondary particle form in which a plurality of primary particles are aggregated, and a second positive active material in a single particle form, wherein each of the first positive active material and the second positive active material includes a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 70 mol % relative to the total elements excluding lithium and excluding oxygen, the first positive active material includes a coating portion in a form of a film on the surface of the secondary particle, the second positive active material includes a coating portion in a form of a film on the surface of the single particle, the coating portion of the first positive active material and the coating portion of the second positive active material includes lithium cobalt oxide and cobalt oxyhydroxide, respectively.
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公开(公告)号：US20240178373A1
公开(公告)日：2024-05-30
申请号：US18354414
申请日：2023-07-18
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Youngjoo CHAE , Minhan KIM , Jinhwa KIM , Jihyun SEOG
IPC: H01M4/36 , H01M4/04 , H01M4/525 , H01M10/052
CPC classification number: H01M4/366 , H01M4/0471 , H01M4/525 , H01M10/052 , H01M2004/028
Abstract: Disclosed are a positive active material for a rechargeable lithium battery, a preparation method thereof, and a rechargeable lithium battery including the same. The positive active material for a rechargeable lithium battery includes a first positive active material including a lithium nickel-based composite oxide and including a secondary particle in which a plurality of primary particles are aggregated and a cobalt coating portion on a surface of the secondary particle, and a second positive active material including a lithium nickel-based composite oxide and including a single particle and a cobalt coating portion on a surface of the single particle, wherein a cobalt content (at %) based on the total amount of nickel and cobalt in the cobalt coating portion of the first positive active material is about 1.45 times to about 1.60 times a cobalt content (at %).
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公开(公告)号：US20200287215A1
公开(公告)日：2020-09-10
申请号：US16809460
申请日：2020-03-04
Applicant: Samsung SDI Co., Ltd.
Inventor： Young-Ki KIM , Jungjoon PARK , Soonrewl LEE , Youngjoo CHAE , Ickkyu CHOI , Mingzi HONG , Soonkie HONG
IPC: H01M4/525 , H01M4/36 , H01M10/0525 , H01M4/04 , H01M4/1391
Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1: Vs
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