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：US11569503B2

公开(公告)日：2023-01-31

申请号：US15654623

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

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：US11456458B2

公开(公告)日：2022-09-27

申请号：US17183295

申请日：2021-02-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Doyu Kim ,  Donggyu Chang ,  Jongmin Kim

IPC: H01M4/525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/36 ,  C01G53/04 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/02

Abstract: A nickel (Ni)-based active material for a lithium secondary battery, a preparing method thereof, and a lithium secondary battery including a positive electrode including the same. The Ni-based active material includes a secondary particle including a plurality of particulate structures, wherein each of the particulate structures includes a porous core portion and a shell portion including primary particles radially arranged on the porous core portion, and lithium phosphate is in the porous core portion, between the plurality of primary particles, and on the surface of the secondary particle. The Ni-based active material includes a porous inner portion including the porous core portion; and an outer portion comprising the the shell portion, and the Ni-based active material includes the porous inner portion having closed pores and the outer portion, wherein the porous inner portion has a density less than that of the outer portion, and the Ni-based active material has a net density of 4.7 g/cc or less.

公开(公告)号：US11152610B2

公开(公告)日：2021-10-19

申请号：US16412185

申请日：2019-05-14

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donggyu Chang ,  Jongmin Kim

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

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：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.

公开(公告)号：US11302919B2

公开(公告)日：2022-04-12

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 ,  C01G53/00 ,  H01M4/485 ,  H01M4/505 ,  H01M4/02 ,  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：US20210167379A1

公开(公告)日：2021-06-03

申请号：US17091525

申请日：2020-11-06

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinwha Kim ,  Minhan Kim ,  Donggyu Chang ,  Jihyun Seog ,  Yuntaek Oh ,  Jungwoo Son

IPC: H01M4/525 ,  H01M10/0525 ,  C01G53/00

Abstract: The application relates to a positive active material precursor including a transition metal composite oxide precursor. The transition metal composite oxide precursor exhibits a peak full width at half maximum of a (200) plane (2θ=about 42° to about 44°) in X-ray diffraction analysis in a range of about 0.3° to about 0.5°. The application also relates to a positive active material using the precursor, a method of preparing the same, and a positive electrode and a rechargeable lithium battery including the same.

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：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.