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：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.

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.

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：US20250140792A1

公开(公告)日：2025-05-01

申请号：US18927405

申请日：2024-10-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhwa KIM ,  Minhan KIM ,  Soonrewl LEE ,  Jihyun SEOG

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/525 ,  H01M4/62

Abstract: A rechargeable lithium battery including a positive electrode, and the positive electrode includes a positive electrode current collector, and a positive electrode active material layer on the positive electrode current collector, wherein the positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material, the first positive electrode active material includes lithium nickel-based composite oxide and includes secondary particles composed of a plurality of primary particles, and an average particle diameter (D50) of the secondary particles is about 9 μm to about 25 μm, the second positive electrode active material includes lithium nickel-based composite oxide and comprises single particles, and an average particle diameter (D50) of the single particles is about 0.5 μm to about 5 μm.

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.

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：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.

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：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.