公开(公告)号：US11417875B2

公开(公告)日：2022-08-16

申请号：US16670850

申请日：2019-10-31

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soonkie Hong ,  Young-Ki Kim ,  Jungjoon Park ,  Soonrewl Lee ,  Youngjoo Chae ,  Ickkyu Choi ,  Mingzi Hong

IPC: H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive active material for a rechargeable lithium battery includes a nickel-based lithium transition metal oxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a core and a surface layer surrounding the core, and the surface layer includes a plurality of primary particles and a nano-sized cobalt-based lithium transition metal oxide absorbed in the surface layer, between the primary particles.

公开(公告)号：US11515521B2

公开(公告)日：2022-11-29

申请号：US16670739

申请日：2019-10-31

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Mingzi Hong ,  Young-Ki Kim ,  Jungjoon Park ,  Soonrewl Lee ,  Youngjoo Chae ,  Ickkyu Choi ,  Soonkie Hong

IPC: H01B1/08 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

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 and having a smaller particle diameter than the first compound, wherein at least one of the first compound and the second compound includes a core and a surface layer surrounding the core: Lia1Nix1Coy1M11-x1-y1O2,  Chemical Formula 1 Lia2Nix2Coy2M21-x2-y2O2,  Chemical Formula 2 wherein M1 and M2 are each independently at least one selected from Mn, Al, Cr, Fe, V, Mg, Ti, Zr, Nb, Mo, W, Cu, Zn, Ga, In, Sn, La, and Ce. The atomic concentration (at %) of nickel (Ni) with respect to the total amount of non-lithium metals is higher in the surface layer than in the core, and an amount of cation mixing is less than or equal to about 3%.

公开(公告)号：US11552293B2

公开(公告)日：2023-01-10

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 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/02

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

公开(公告)号：US11515535B2

公开(公告)日：2022-11-29

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 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/02

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

公开(公告)号：US12300807B2

公开(公告)日：2025-05-13

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

IPC: H01M4/36 ,  C01G53/40 ,  C01G53/44 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

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：US11031594B2

公开(公告)日：2021-06-08

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 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/36 ,  H01M4/02

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.