公开(公告)号：US11201328B2

公开(公告)日：2021-12-14

申请号：US16463815

申请日：2017-12-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang Yun ,  Jiyoon Kim ,  Wooyoung Yang ,  Donggyu Chang ,  Minah Cha

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

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a porous shell, wherein a porosity of the porous shell may be greater than a porosity of the porous core, and a dense intermediate layer may be disposed between the porous core and the porous shell, wherein a porosity of the dense intermediate layer may be lower than the porosity of the porous core and the porosity of the porous shell; a method of preparing the same; a nickel-based active material for a lithium secondary battery formed therefrom; and a lithium secondary battery containing a positive electrode including the same.

公开(公告)号：US12300807B2

公开(公告)日：2025-05-13

申请号：US17657316

申请日：2022-03-30

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 ,  C01G53/40 ,  C01G53/44 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

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 crystal 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：US11955632B2

公开(公告)日：2024-04-09

申请号：US17091525

申请日：2020-11-06

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M10/0525

CPC classification number: H01M4/525 ,  C01G53/42 ,  H01M10/0525 ,  C01P2002/72 ,  C01P2002/78 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

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：US20230163298A1

公开(公告)日：2023-05-25

申请号：US18158274

申请日：2023-01-23

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 ,  C01P2004/50 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/16 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/90 ,  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：US11552294B2

公开(公告)日：2023-01-10

申请号：US17039739

申请日：2020-09-30

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 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505

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：US10833329B2

公开(公告)日：2020-11-10

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 ,  H01M4/02 ,  H01M4/505 ,  C01G53/00

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：US10707485B2

公开(公告)日：2020-07-07

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

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.