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：US20190190019A1

公开(公告)日：2019-06-20

申请号：US16326894

申请日：2017-08-22

Applicant: Samsung SDI Co., Ltd.

Inventor： Jaeho LEE ,  Seonyoung KWON ,  Kihyun KIM ,  Yumi SONG ,  Kwanghwan CHO

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

Abstract: Provided are a composite cathode active material for a lithium ion battery including a nickel-rich lithium nickel-based compound having a nickel content of 50 to 100 mol % based on a total content of transition metals; and a coating film including a rare earth metal hydroxide and disposed on the surface of the nickel-rich lithium nickel-based compound, a manufacturing method therefor, and a lithium ion battery including a cathode including the composite cathode active material.

公开(公告)号：US20240413298A1

公开(公告)日：2024-12-12

申请号：US18737629

申请日：2024-06-07

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungwoo SON ,  Seonyoung KWON ,  Eunok OH ,  Yuntaek OH ,  Minkyeong KANG ,  Taehee KWAK

IPC: H01M4/131 ,  H01M4/02 ,  H01M4/133 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0585

Abstract: A positive electrode for a stack-type rechargeable lithium battery includes a current collector, a first positive electrode active material layer on one surface of the current collector, and a second positive electrode active material layer on the other surface of the current collector, wherein a loading level of the first positive electrode active material layer is about 5% or more higher than a loading level of the second positive electrode active material layer, each of the first positive electrode active material layer and the second positive electrode active material layer includes a first positive electrode active material in the form of secondary particles and a second positive electrode active material in the form of single particles, an average particle diameter of secondary particles of the first positive electrode active material is larger than an average particle diameter of single particles of the second positive electrode active material.

公开(公告)号：US20240213470A1

公开(公告)日：2024-06-27

申请号：US18473966

申请日：2023-09-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Seonyoung KWON ,  Eunok OH ,  Jungwoo SON ,  Yuntaek OH ,  Minkyeong KANG ,  Taehee KWAK

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M4/364 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021

Abstract: A positive electrode for a rechargeable lithium battery includes a current collector and a positive electrode active material layer on the current collector, the positive electrode active material layer including a positive electrode active material, the positive electrode active material includes about 75 wt % to about 100 wt % of a first positive electrode active material in a form of single particles and including a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 70 mol %, and about 0 wt % to about 25 wt % of a second positive electrode 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, and, in an X-ray diffraction analysis of the positive electrode, a ratio of a peak intensity of a (003) plane to a (104) plane is greater than or equal to about 4.8.

公开(公告)号：US20230317939A1

公开(公告)日：2023-10-05

申请号：US18003881

申请日：2021-07-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kiyong AHN ,  Do-Wook JUN ,  Youngsun KONG ,  Seonyoung KWON ,  Minkyu KIM ,  Min Ju KIM ,  Dookyun LEE ,  Kijoo HONG

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  H01M4/505 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  H01M4/505 ,  C01G53/42 ,  H01M2004/021

Abstract: According to an embodiment, provided is a cathode active material for a lithium secondary battery, the cathode active material including a nickel-based composite metal oxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a central portion and a surface portion, the surface portion includes a nickel-based composite metal oxide doped with manganese, and an amount of manganese present in the grain boundaries of the plurality of primary particles present in the surface portion is greater than an amount of manganese present inside the primary particles.

公开(公告)号：US20220384801A1

公开(公告)日：2022-12-01

申请号：US17655961

申请日：2022-03-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngsun KONG ,  Kiyong AHN ,  Seonyoung KWON ,  Min Ju KIM ,  Dookyun LEE ,  Dowook JUN ,  Kijoo HONG

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

Abstract: A positive active material includes a nickel-based composite metal oxide having the form of secondary particles in which a plurality of primary particles are agglomerated, where each secondary particle includes a core and a shell, the primary particles of the shell are coated with a manganese-containing nickel-based composite metal oxide, and the manganese-containing nickel-based composite metal oxide has a layered structure.

公开(公告)号：US20180151865A1

公开(公告)日：2018-05-31

申请号：US15824829

申请日：2017-11-28

Applicant: Samsung SDI Co., Ltd.

Inventor： Yumi SONG ,  Seonyoung KWON ,  Kihyun KIM ,  Soohyeon KIM ,  Jinhwa KIM ,  Joongho MOON ,  Jaeho LEE ,  Kwanghwan CHO ,  Soonbong CHOI ,  Mingzi HONG

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/131 ,  C01B32/22 ,  H01M4/133 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/665 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  Y02T10/7011

Abstract: A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.

公开(公告)号：US20240101443A1

公开(公告)日：2024-03-28

申请号：US18003886

申请日：2021-07-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kiyong AHN ,  Do-Wook JUN ,  Youngsun KONG ,  Seonyoung KWON ,  Min Ju KIM ,  Dookyun LEE ,  Kijoo HONG

IPC: C01G53/00

CPC classification number: C01G53/006 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/84 ,  C01P2006/40

Abstract: Provided is a positive electrode active material precursor for a rechargeable lithium battery including a nickel-based composite metal hydroxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a central portion and a surface portion, and the surface portion includes a primary particle coated with manganese oxide, manganese hydroxide, or a mixture thereof.

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：US20210135217A1

公开(公告)日：2021-05-06

申请号：US17144381

申请日：2021-01-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junseok PARK ,  Seonyoung KWON ,  Jihyun KIM ,  Jinhwa KIM ,  Dohyung PARK ,  Daehoe LEE

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/52

Abstract: A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2θ of about 31.3±1° to a first peak at 2θ of about 19±1° in X-ray diffraction spectra, as analyzed by X-ray diffraction.