公开(公告)号：US20200343550A1

公开(公告)日：2020-10-29

申请号：US16858429

申请日：2020-04-24

Applicant: SAMSUNG SDI CO., LTD. ,  Seoul National University R&DB Foundation

Inventor： Kwanghwan CHO ,  Kyu Tae LEE ,  Hanseul KIM ,  Sung Wook DOO ,  Seongmin KIM

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

Abstract: A positive active material for a rechargeable lithium battery includes a nickel-based lithium metal oxide having a layered crystal structure, and a coating layer including a lithium-metal oxide disposed selectively disposed on (003) crystalline plane of the nickel-based lithium metal oxide, wherein the positive active material includes at least one secondary particle including an agglomerate of two or more primary particles.

公开(公告)号：US20200058925A1

公开(公告)日：2020-02-20

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 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/485 ,  H01M4/505 ,  H01M4/36 ,  H01M10/052 ,  H01M4/525

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：US20170125809A1

公开(公告)日：2017-05-04

申请号：US15337541

申请日：2016-10-28

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sanghoon KIM ,  Kwanghwan CHO ,  Eunsung LEE ,  Dohyung PARK ,  ILseok KIM ,  Sol CHOI

IPC: H01M4/525 ,  C01G53/00 ,  H01M2/02 ,  H01M10/0525 ,  H01M4/131

CPC classification number: H01M4/525 ,  C01G53/00 ,  C01G53/006 ,  C01G53/42 ,  C01G53/50 ,  C01P2002/60 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/40 ,  H01M2/022 ,  H01M4/131 ,  H01M10/0525

Abstract: A composite positive active material includes a lithium nickel cobalt aluminum composite oxide. A full width at half maximum (FWHM) of a peak of a (104) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less and an FWHM of a peak of a (108) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less, the peaks being obtained by X-ray diffraction analysis using a CuKα X-ray. A method of preparing the composite positive active material, and a lithium secondary battery including a positive electrode including the composite positive active material are disclosed.

公开(公告)号：US20210265628A1

公开(公告)日：2021-08-26

申请号：US17308940

申请日：2021-05-05

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jongmin KIM ,  Jiyoon KIM ,  Pilsang YUN ,  Donggyu CHANG ,  Kwanghwan CHO ,  Jangsuk HYUN ,  Jinhwa KIM

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/485 ,  H01M4/505

Abstract: Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.

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：US20180026268A1

公开(公告)日：2018-01-25

申请号：US15654648

申请日：2017-07-19

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin KIM ,  Jiyoon KIM ,  Pilsang YUN ,  Donggyu CHANG ,  Kwanghwan CHO ,  Jangsuk HYUN ,  Jinhwa KIM

IPC: H01M4/525 ,  H01M4/485 ,  H01M10/052

Abstract: Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.

公开(公告)号：US20210075005A1

公开(公告)日：2021-03-11

申请号：US16959966

申请日：2019-04-18

Applicant: Samsung SDI Co., Ltd.

Inventor： Kwanghwan CHO

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/62 ,  H01M4/1391 ,  H01M4/04 ,  H01M4/131 ,  C01G53/00

Abstract: The present disclosure relates to a positive electrode active material, a preparing method therefor, and a lithium secondary battery including same. A positive electrode active material according to an embodiment comprises: a core including a lithium nickel composite oxide represented by Chemical Formula 1; and a surface layer present on the core and including at least one of a water-soluble ammonium-based organic compound and a water-soluble amine-based organic compound. The details of Chemical Formula 1 are as defined in the specification.

公开(公告)号：US20200152978A1

公开(公告)日：2020-05-14

申请号：US16677307

申请日：2019-11-07

Applicant: Samsung SDI Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Kwanghwan CHO ,  Kisuk KANG ,  Ilseok KIM ,  Won Mo SEONG

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/131 ,  H01M4/1391

Abstract: One or more example embodiments of the present disclosure provide a positive active material, a rechargeable lithium battery including the same, and a method of preparing the same. The positive active material includes a lithium-containing composite oxide; and a sulfur-containing inorganic lithium compound, wherein the sulfur-containing inorganic lithium compound forms a coating layer on a surface of the lithium-containing composite oxide. The coating layer may reduce an amount of residual lithium and gas present on the surface of the lithium-containing composite oxide, thereby improving the stability of the battery and improving the cycle-life characteristics.

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：US20200343552A1

公开(公告)日：2020-10-29

申请号：US16958896

申请日：2019-01-23

Applicant: Samsung SDI Co., Ltd.

Inventor： Jinhwa KIM ,  Jongmin KIM ,  Wooyoung YANG ,  Kwanghwan CHO

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

Abstract: Provided are a cathode active material for a lithium secondary battery, and a cathode and a lithium secondary battery including the same, the cathode active material including secondary particles including an aggregate of two or more primary particles, and a primary particle coefficient is greater than or equal to 30 μm−1 and a total circumferential length of the primary particles is greater than or equal to 220 μm.