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.

公开(公告)号：US20180166687A1

公开(公告)日：2018-06-14

申请号：US15836311

申请日：2017-12-08

Applicant: Samsung SDI Co., Ltd.

Inventor： Donggyu CHANG ,  Jongmin KIM

IPC: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M2/02 ,  H01M10/052

CPC classification number: H01M4/505 ,  C01G53/42 ,  C01G53/50 ,  C01G53/66 ,  C01P2006/10 ,  C01P2006/16 ,  H01M2/022 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/028

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：US20180026267A1

公开(公告)日：2018-01-25

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 ,  H01M4/485 ,  H01M10/052

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

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：US20220037662A1

公开(公告)日：2022-02-03

申请号：US17499590

申请日：2021-10-12

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Jongmin KIM ,  Hyunbeom KIM ,  Wooyoung YANG ,  Jangsuk HYUN

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

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a shell on the porous core, the shell having a radial arrangement structure with a higher density than that of the porous core, wherein the nickel-based active material precursor have a size of 9 μm to 14 μm, and the porous core has a volume of about 5% by volume to about 20% by volume based on the total volume of the nickel-based active material precursor; a method of preparing the nickel-based active material precursor; a nickel-based active material produced from the nickel-based active material; and a lithium secondary battery including a cathode containing the nickel-based active material.

公开(公告)号：US20210305550A1

公开(公告)日：2021-09-30

申请号：US17250665

申请日：2019-06-14

Applicant: Samsung SDI Co., Ltd.

Inventor： Soohyeon KIM ,  Jongmin KIM

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04

Abstract: Provided is a positive active material for a rechargeable lithium battery including a nickel-based composite oxide having a nickel content of greater than or equal to 60 mol % relative to a total amount of metal excluding lithium and a coating layer on the surface of the nickel-based composite oxide, wherein the coating layer includes lithium fluoride (LiF) and metal fluoride produced by firing a metal oxide and a fluorine-based organic material.

公开(公告)号：US20200350582A1

公开(公告)日：2020-11-05

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 ,  H01M10/0525 ,  H01M4/505

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：US20190355981A1

公开(公告)日：2019-11-21

申请号：US16412185

申请日：2019-05-14

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donggyu CHANG ,  Jongmin KIM

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

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：US20180159128A1

公开(公告)日：2018-06-07

申请号：US15829548

申请日：2017-12-01

Applicant: Samsung SDI Co., Ltd.

Inventor： Jinhwa KIM ,  Hyunbeom KIM ,  Jongmin KIM ,  Wooyoung YANG ,  Donggyu CHANG ,  Jangsuk HYUN

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

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/42 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/20 ,  C01P2004/22 ,  C01P2004/24 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/16 ,  C01P2006/40 ,  H01M4/0471 ,  H01M4/505 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are 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 includes at least one secondary particle that includes at least two primary particle structures, the primary particle structures each including a porous inner portion and an outer portion having a radially arranged structure, and the secondary particle including at least two radial centers.

公开(公告)号：US20180151876A1

公开(公告)日：2018-05-31

申请号：US15825767

申请日：2017-11-29

Applicant: Samsung SDI Co., Ltd.

Inventor： Jiyoon KIM ,  Jongmin KIM ,  Jaehyun SHIM ,  Donggyu CHANG

IPC: H01M4/38 ,  H01M10/052 ,  H01M4/04

CPC classification number: H01M4/38 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are 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 may include a secondary particle including an agglomerate of at least two plate primary particles, wherein at least a part of the secondary particle has a structure in which the plate primary particles are arranged radially, and a porosity of an exterior portion of the secondary particle is greater than that of an interior portion of the secondary particle.

公开(公告)号：US20250140813A1

公开(公告)日：2025-05-01

申请号：US19003965

申请日：2024-12-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soohyeon KIM ,  Jongmin KIM

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/136 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

Abstract: Provided is a positive active material for a rechargeable lithium battery including a nickel-based composite oxide having a nickel content of greater than or equal to 60 mol % relative to a total amount of metal excluding lithium and a coating layer on the surface of the nickel-based composite oxide, wherein the coating layer includes lithium fluoride (LiF) and metal fluoride produced by firing a metal oxide and a fluorine-based organic material.