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：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.