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：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.

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：US12224426B2

公开(公告)日：2025-02-11

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 ,  H01M4/02 ,  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.

公开(公告)号：US11728473B2

公开(公告)日：2023-08-15

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 ,  C01G53/00 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

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 ,  H01M2004/028

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.

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：US11271202B2

公开(公告)日：2022-03-08

申请号：US16547422

申请日：2019-08-21

Applicant: Samsung SDI Co., Ltd.

Inventor： Soonkie Hong ,  Young-Ki Kim ,  Soonrewl Lee ,  Young-Hun Lee ,  Jiyeon Jang ,  Ickkyu Choi ,  Mingzi Hong

IPC: H01M4/525 ,  H01M4/131 ,  H01M10/0525 ,  C01G51/00 ,  H01M4/02

Abstract: A positive active material for use in a positive electrode and a rechargeable lithium battery includes a lithium cobalt oxide including a secondary particle having an average particle diameter of about 15 μm to about 25 μm, wherein the secondary particle includes a plurality of primary particles having an average particle diameter of about 2 μm to about 10 μm, and the positive active material has a pellet density of greater than or equal to about 3.80 g/cm3. A method of manufacturing the positive active material includes heat-treating a cobalt-containing compound at a temperature of greater than or equal to about 900° C. to form a cobalt oxide comprising Co3O4 and CoO, and reacting the cobalt oxide with a lithium compound to prepare the lithium cobalt oxide.