公开(公告)号：US20200067090A1

公开(公告)日：2020-02-27

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 ,  H01M10/0525 ,  H01M4/131 ,  C01G51/00

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.

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.

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

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

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/88 ,  H01M10/0525 ,  H01M10/44

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.

公开(公告)号：US20210066712A1

公开(公告)日：2021-03-04

申请号：US16960791

申请日：2019-03-06

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Ki KIM ,  Soonrewl LEE ,  Young-Hun LEE ,  Jiyeon JANG ,  Ickkyu CHOI ,  Mingzi HONG ,  Soonkie HONG

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/04 ,  H01M10/0525

Abstract: The present invention relates to a positive electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including same, wherein the positive electrode active material comprises a core and a surface layer formed on the surface of the core, the core comprising a first crystalline structure, the surface layer comprising a first crystalline structure and a second crystalline structure different from the first crystalline structure, the first crystalline structure being present more than the second crystalline structure in the surface layer.

公开(公告)号：US20190157671A1

公开(公告)日：2019-05-23

申请号：US16194006

申请日：2018-11-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Hun LEE ,  Hyunjei CHUNG ,  Yongmok CHO ,  Yoonyoung CHOI ,  Ickkyu CHOI

IPC: H01M4/525 ,  H01M10/0525

Abstract: A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The positive active material for a rechargeable lithium battery may include a compound represented by Chemical Formula 1: Li1+x1Co1-x2-x3-x4M1x2M2x3M3x4O2.   Chemical Formula 1 In Chemical Formula 1, 0 0.01; M1 may be selected from Mg, Na, Ca, and a combination thereof; M2 may be selected from Al, B, Fe, and a combination thereof; and M3 may be selected from Ti, Zr, V, Cr, Mo, W, Mn, Ni, Cu, Ag, Zn, Si, Sn, N, P, S, F, Cl, and a combination thereof.