公开(公告)号：US12224436B2

公开(公告)日：2025-02-11

申请号：US16962635

申请日：2019-01-29

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin Kim ,  Soohyeon Kim ,  Jinhwa Kim ,  Pilsang Yun

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

Abstract: Disclosed are a cathode active material for a lithium secondary battery and a lithium secondary battery including the same. The cathode active material includes a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle has a predetermined arrangement structure in which (003) surface of primary particles are aligned to be in a vertical direction with respect to a tangent line at a point (P) at which the (003) surface of the primary particles meet a surface of the secondary particle.

公开(公告)号：US12080882B2

公开(公告)日：2024-09-03

申请号：US17494686

申请日：2021-10-05

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donggyu Chang ,  Jongmin Kim

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

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery including a cathode including the cathode active material. The cathode active material includes: a secondary particle of a nickel-based active material, wherein the secondary particle including a plurality of primary particles, wherein the secondary particle includes a radial arrangement structure and an irregular porous structure, the radial arrangement structure is located closer to a surface of the secondary particle than the irregular porous structure, and a lithium fluoride-based compound is present on a surface of the nickel-based active material.

公开(公告)号：US11757092B2

公开(公告)日：2023-09-12

申请号：US16684057

申请日：2019-11-14

Applicant: Samsung SDI Co., Ltd.

Inventor： Donggyu Chang ,  Donghyun Kil ,  Jongmin Kim ,  Wooyoung Yang

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M10/04 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/502 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M10/0422 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a coating layer including a fiber-shaped lithium manganese composite oxide, wherein the fiber-shaped lithium manganese composite oxide is attached to the surface of the lithium nickel-based composite oxide.

公开(公告)号：US11682755B2

公开(公告)日：2023-06-20

申请号：US17073124

申请日：2020-10-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin Kim ,  Jiyoon Kim ,  Jinhwa Kim

IPC: H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/505 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure. The first and second positive active materials may both include nickel-based positive active materials. A method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material are also provided.

公开(公告)号：US11309542B2

公开(公告)日：2022-04-19

申请号：US15836311

申请日：2017-12-08

Applicant: Samsung SDI Co., Ltd.

Inventor： Donggyu Chang ,  Jongmin Kim

IPC: H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  C01G53/00 ,  H01M50/107 ,  H01M4/02

Abstract: A nickel-based active material for a lithium secondary battery includes a porous inner portion having closed pores and an outer portion, wherein the porous inner portion has a density less than that of the outer portion, and the nickel-based active material has a net density of 4.7 g/cc or less. A method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material are provided.

公开(公告)号：US20230282825A1

公开(公告)日：2023-09-07

申请号：US18316175

申请日：2023-05-11

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 ,  H01M10/052

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/485 ,  H01M10/052 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/90 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/40 ,  H01M2004/021

Abstract: A nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material, the nickel-based active material comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.

公开(公告)号：US11670754B2

公开(公告)日：2023-06-06

申请号：US17102332

申请日：2020-11-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Pilsang Yun ,  Jongmin Kim ,  Hyunbeom Kim ,  Sangin Park ,  Yongchan You

IPC: H01M4/131 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02

CPC classification number: H01M4/131 ,  C01G53/006 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  H01M2004/028

Abstract: A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure, wherein the first and second positive active materials may each include nickel-based positive active materials and the surface of the second positive active material is coated with a boron-containing compound. Further embodiments provide a method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material.

公开(公告)号：US11522189B2

公开(公告)日：2022-12-06

申请号：US17102412

申请日：2020-11-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kiyong Ahn ,  Jongmin Kim

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/04 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/505 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/02

Abstract: A positive electrode for a rechargeable lithium battery includes a positive active material for a rechargeable lithium battery that includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least a portion of the primary particles has a radial arrangement structure, and a second positive active material having a monolith structure, wherein the first and second positive active materials each include a nickel-based positive active material, and an X-ray diffraction (XRD) peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. Further embodiments provide a method of manufacturing the positive electrode for rechargeable lithium battery, and a rechargeable lithium battery including the same.

公开(公告)号：US11495796B2

公开(公告)日：2022-11-08

申请号：US16682907

申请日：2019-11-13

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin Kim ,  Donghyun Kil ,  Wooyoung Yang ,  Seung Joon Lee

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

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a lithium manganese composite oxide having at least two crystal lattice structures, wherein the secondary particle has a regular array structure in which (003) planes of the primary particles are oriented in a vertical direction with respect to the surface of the secondary particle.

公开(公告)号：US11742482B2

公开(公告)日：2023-08-29

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 ,  H01M4/485 ,  H01M4/505 ,  C01G53/00 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/42 ,  C01G53/50 ,  H01M4/485 ,  H01M4/505 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2004/90 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/40 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

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.