公开(公告)号：US11349122B2

公开(公告)日：2022-05-31

申请号：US16817163

申请日：2020-03-12

Applicant: Samsung SDI Co., Ltd.

Inventor： Youngsun Kong ,  Kiyong Ahn ,  Jinyoung Kim ,  Sung Ho Choo ,  Seonyoung Kwon

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive active material for a rechargeable lithium battery includes nickel-based lithium transition metal oxide secondary particles, in which a plurality of primary particles are aggregated. The primary particles include polycrystalline primary particles composed of 2 to 10 single crystals, and each of the single crystals has a particle diameter of about 0.5 μm to about 3 μm.

公开(公告)号：US20250132332A1

公开(公告)日：2025-04-24

申请号：US19006085

申请日：2024-12-30

Applicant: Samsung SDI Co., Ltd.

Inventor： Kiyong Ahn ,  Taehee Kwak ,  Minkyu Kim ,  Naoyuki Hase ,  Jeuk Ha ,  Seonyoung Kwon ,  Yumi Song ,  Eunok Oh

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

Abstract: A nickel-based active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode, a negative electrode, and an electrolyte between the positive electrode and the negative electrode are provided. The nickel-based active material includes 80 mol % or more of nickel with respect to the metal elements excluding lithium, and the nickel-based active material includes: i) large secondary particles having a size in a range of 10 μm to 20 μm and including aggregates of primary particles having a size of 1 μm or less; ii) large crystal particles including primary particles having a size in a range of 1 μm to 5 μm; and iii) small secondary particles having a size in a range of 1 μm to 7 μm and including aggregates of primary particles having a size of 1 μm or less.

公开(公告)号：US10790504B2

公开(公告)日：2020-09-29

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: H01M4/02 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/505 ,  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：US11239456B2

公开(公告)日：2022-02-01

申请号：US16663105

申请日：2019-10-24

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 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/02 ,  C01B32/22

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：US11075367B2

公开(公告)日：2021-07-27

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 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/02 ,  C01B32/22

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：US11038169B2

公开(公告)日：2021-06-15

申请号：US16333195

申请日：2017-09-05

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junseok Park ,  Seonyoung Kwon ,  Youngki Kim ,  Jihyun Kim ,  Dohyung Park ,  Sooyoun Park

IPC: H01M4/525 ,  C01G51/00 ,  H01M10/0525 ,  H01M4/02 ,  C01G51/04

Abstract: Provided are a cobalt oxide (Co3O4) for a lithium secondary battery, having an average particle diameter (D50) of about 14 μm to about 19 μm and a tap density of about 2.1 g/cc to about 2.9 g/cc, a method of preparing the cobalt oxide, a lithium cobalt oxide for a lithium secondary battery prepared from the cobalt oxide, and a lithium secondary battery including a cathode including the lithium cobalt oxide.

公开(公告)号：US11482704B2

公开(公告)日：2022-10-25

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: H01M4/13 ,  H01M4/525 ,  H01M10/052 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/52 ,  H01M4/02

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.

公开(公告)号：US20220140338A1

公开(公告)日：2022-05-05

申请号：US17452286

申请日：2021-10-26

Applicant: Samsung SDI Co., Ltd.

Inventor： Kiyong Ahn ,  Taehee Kwak ,  Minkyu Kim ,  Naoyuki Hase ,  Jeuk Ha ,  Seonyoung Kwon ,  Yumi Song ,  Eunok Oh

IPC: H01M4/525 ,  H01M10/0525

Abstract: A nickel-based active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode, a negative electrode, and an electrolyte between the positive electrode and the negative electrode are provided. The nickel-based active material includes 80 mol % or more of nickel with respect to the metal elements excluding lithium, and the nickel-based active material includes: i) large secondary particles having a size in a range of 10 μm to 20 μm and including aggregates of primary particles having a size of 1 μm or less; ii) large crystal particles including primary particles having a size in a range of 1 μm to 5 μm; and iii) small secondary particles having a size in a range of 1 μm to 7 μm and including aggregates of primary particles having a size of 1 μm or less.

公开(公告)号：US10957897B2

公开(公告)日：2021-03-23

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 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/02 ,  C01B32/22

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：US20150372301A1

公开(公告)日：2015-12-24

申请号：US14701328

申请日：2015-04-30

Applicant: Samsung SDI Co., Ltd

Inventor： Jihyun Kim ,  Dohyung Park ,  Seonyoung Kwon ,  Juhyeong Han ,  Jinhwa Kim ,  Minhan Kim ,  Kyounghyun Kim

IPC: H01M4/525 ,  H01M10/052 ,  C01G51/04

CPC classification number: H01M4/525 ,  C01G51/42 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/40 ,  H01M10/052 ,  H01M2004/028

Abstract: Provided is a lithium cobalt composite oxide for a lithium secondary battery represented by Formula 1 below and having a polycrystalline state, a method of preparing the same, a positive electrode for a lithium battery including the lithium cobalt composite oxide, and a lithium secondary battery including a positive electrode, which includes the lithium cobalt composite oxide. LiaCobOc   Formula 1 In Formula 1, a is an integer from 0.9 to 1.1, b is an integer from 0.980 to 1.0000, and c is an integer from 1.9 to 2.1. Also included is a method of manufacture therefor.

Abstract translation: 本发明提供一种下述通式1所示的锂二次电池用锂钴复合氧化物，其具有多晶态，其制备方法，包含锂钴复合氧化物的锂电池用正极，以及锂二次电池，其包含 包括锂钴复合氧化物的正极。 通式1式1中，a为0.9〜1.1的整数，b为0.980〜1.0000的整数，c为1.9〜2.1的整数。 还包括其制造方法。