公开(公告)号：US20210234165A1

公开(公告)日：2021-07-29

申请号：US17229373

申请日：2021-04-13

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Jinhwa KIM ,  Hyunbeom KIM ,  Jaehyun SHIM ,  Wooyoung YANG

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

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a core, an intermediate layer located on the core, and a shell located on the intermediate layer, wherein porosity gradually decreases in the order of the core, the intermediate layer, and the shell, and each of the intermediate layer and the shell has a radial arrangement structure, a method for producing the nickel-based active material precursor, a nickel-based active material produced therefrom, and a lithium secondary battery including a cathode containing the nickel-based active 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：US20200083530A1

公开(公告)日：2020-03-12

申请号：US16462887

申请日：2017-12-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Jinhwa KIM ,  Hyunbeom KIM ,  Jaehyun SHIM ,  Wooyoung YANG

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

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a core, an intermediate layer located on the core, and a shell located on the intermediate layer, wherein porosity gradually decreases in the order of the core, the intermediate layer, and the shell, and each of the intermediate layer and the shell has a radial arrangement structure, a method for producing the nickel-based active material precursor, a nickel-based active material produced therefrom, and a lithium secondary battery including a cathode containing 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：US20180076454A1

公开(公告)日：2018-03-15

申请号：US15702048

申请日：2017-09-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junseok PARK ,  Seonyoung KWON ,  Jihyun KIM ,  Jinhwa KIM ,  Dohyung PARK ,  Daehoe LEE

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

CPC classification number: H01M4/525 ,  H01M4/0497 ,  H01M4/52 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

Abstract: A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2θ of about 31.3±1° to a first peak at 2θ of about 19±1° in X-ray diffraction spectra, as analyzed by X-ray diffraction.

公开(公告)号：US20250140792A1

公开(公告)日：2025-05-01

申请号：US18927405

申请日：2024-10-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhwa KIM ,  Minhan KIM ,  Soonrewl LEE ,  Jihyun SEOG

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/525 ,  H01M4/62

Abstract: A rechargeable lithium battery including a positive electrode, and the positive electrode includes a positive electrode current collector, and a positive electrode active material layer on the positive electrode current collector, wherein the positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material, the first positive electrode active material includes lithium nickel-based composite oxide and includes secondary particles composed of a plurality of primary particles, and an average particle diameter (D50) of the secondary particles is about 9 μm to about 25 μm, the second positive electrode active material includes lithium nickel-based composite oxide and comprises single particles, and an average particle diameter (D50) of the single particles is about 0.5 μm to about 5 μm.

公开(公告)号：US20240222602A1

公开(公告)日：2024-07-04

申请号：US18603865

申请日：2024-03-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungsue JANG ,  Donghyun KIL ,  Minhan KIM ,  Jinyoung KIM ,  Jinhwa KIM ,  Jihyun SEOG ,  Jaeha SHIM ,  Kiyong AHN ,  Donggyu CHANG ,  Youngjoo CHAE ,  Aram CHOI ,  Jeuk HA

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

CPC classification number: H01M4/364 ,  C01G53/40 ,  C01G53/44 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single particle form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.

公开(公告)号：US20240204186A1

公开(公告)日：2024-06-20

申请号：US18480408

申请日：2023-10-03

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhwa KIM ,  Minhan KIM ,  Jihyun SEOG ,  Youngjoo CHAE

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

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

Abstract: A positive active material includes a first positive active material in a secondary particle form in which a plurality of primary particles are aggregated, and a second positive active material in a single particle form, wherein each of the first positive active material and the second positive active material includes a lithium nickel-based composite oxide having a nickel content of greater than or equal to about 70 mol % relative to the total elements excluding lithium and excluding oxygen, the first positive active material includes a coating portion in a form of a film on the surface of the secondary particle, the second positive active material includes a coating portion in a form of a film on the surface of the single particle, the coating portion of the first positive active material and the coating portion of the second positive active material includes lithium cobalt oxide and cobalt oxyhydroxide, respectively.

公开(公告)号：US20240178373A1

公开(公告)日：2024-05-30

申请号：US18354414

申请日：2023-07-18

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngjoo CHAE ,  Minhan KIM ,  Jinhwa KIM ,  Jihyun SEOG

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/525 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/028

Abstract: Disclosed are a positive active material for a rechargeable lithium battery, a preparation method thereof, and a rechargeable lithium battery including the same. The positive active material for a rechargeable lithium battery includes a first positive active material including a lithium nickel-based composite oxide and including a secondary particle in which a plurality of primary particles are aggregated and a cobalt coating portion on a surface of the secondary particle, and a second positive active material including a lithium nickel-based composite oxide and including a single particle and a cobalt coating portion on a surface of the single particle, wherein a cobalt content (at %) based on the total amount of nickel and cobalt in the cobalt coating portion of the first positive active material is about 1.45 times to about 1.60 times a cobalt content (at %).

公开(公告)号：US20210135217A1

公开(公告)日：2021-05-06

申请号：US17144381

申请日：2021-01-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Junseok PARK ,  Seonyoung KWON ,  Jihyun KIM ,  Jinhwa KIM ,  Dohyung PARK ,  Daehoe LEE

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/52

Abstract: A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2θ of about 31.3±1° to a first peak at 2θ of about 19±1° in X-ray diffraction spectra, as analyzed by X-ray diffraction.