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：US10128499B2

公开(公告)日：2018-11-13

申请号：US15342671

申请日：2016-11-03

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Yumi Song ,  Mingzi Hong ,  Gyuran Jeon ,  Dohyung Park ,  Minhan Kim ,  Joongho Moon

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/02

Abstract: A positive electrode active material includes a lithium composite oxide and a zirconium oxide coating layer and a lithium zirconium oxide coating layer that are in a form of sequential layers on the lithium composite oxide.

公开(公告)号：US11335906B2

公开(公告)日：2022-05-17

申请号：US16437803

申请日：2019-06-11

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Joongho Moon ,  Eunji Kang ,  Yurim Cha ,  Soonbong Choi

IPC: H01M4/36 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/60 ,  H01M4/02

Abstract: A negative active material for a rechargeable lithium battery includes: a core including crystalline carbon; and a metal alkoxide on a surface of the core. A rechargeable lithium battery includes: a negative electrode including a negative active material including a core including crystalline carbon, and a metal alkoxide on a surface of the core; a positive electrode including a positive active material; and an electrolyte.

公开(公告)号：US12212001B2

公开(公告)日：2025-01-28

申请号：US17966984

申请日：2022-10-17

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Ilyoung Choi ,  Soonbong Choi ,  Joongho Moon ,  Hee Seon Choi

IPC: H01M4/583 ,  H01M4/38 ,  H01M10/052 ,  H01M10/44 ,  H01M4/02

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative active material including a rod-shaped crystalline carbon; and a silicon-carbon composite.

公开(公告)号：US12191489B2

公开(公告)日：2025-01-07

申请号：US17190863

申请日：2021-03-03

Applicant: Samsung SDI Co., Ltd.

Inventor： Sunil Park ,  Narae Kim ,  Jaehou Nah ,  Joongho Moon ,  Hyun Soh ,  Eunjoo Lee

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/44

Abstract: A negative active material for a rechargeable lithium battery includes a secondary particle in which a plurality of natural graphite primary particles are agglomerated, the plurality of primary particles including natural graphite, and the secondary particle including pores, and an amorphous carbon positioned in the pores, wherein an area of the amorphous carbon is about 10% to about 30% based on a total area of 100% of the negative active material, in a cross-section of the negative active material.

公开(公告)号：US11641013B2

公开(公告)日：2023-05-02

申请号：US17190802

申请日：2021-03-03

Applicant: Samsung SDI Co., Ltd.

Inventor： Eunjoo Lee ,  Narae Kim ,  Joongho Moon ,  Sunil Park

IPC: H01M4/36 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/02

Abstract: A rechargeable lithium battery includes a negative active material including: a secondary particle including a core in which a plurality of primary particles are agglomerated, the primary particles including a natural graphite; and a coating layer including amorphous carbon and surrounding the core, wherein a Raman peak intensity ratio of a D peak (1350 cm−1 to 1370 cm−1) to a D′ peak (1570 cm−1 to 1620 cm−1) (ID/ID′) of the negative active material is about 3.2 to about 3.8, and a lattice constant La of the negative active material is about 30 nm to about 45 nm.

公开(公告)号：US11594731B2

公开(公告)日：2023-02-28

申请号：US16758509

申请日：2018-10-16

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Suho Song ,  Sangbok Kim ,  Joongho Moon ,  Junghwan Park ,  Kisoo Lee ,  Joohan Song

IPC: H01M4/587 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention relates to an anode active material for lithium secondary battery and a lithium secondary battery comprising the same. The anode active material for lithium secondary batteries comprises two kinds of crystalline carbon, with the peak intensity ratio of 3R(101) face to 2H(100) face I3R(101)/I2H(100) ranging from 0.55 to 0.7 in an X-ray diffraction pattern.

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.