公开(公告)号：US20240101443A1

公开(公告)日：2024-03-28

申请号：US18003886

申请日：2021-07-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kiyong AHN ,  Do-Wook JUN ,  Youngsun KONG ,  Seonyoung KWON ,  Min Ju KIM ,  Dookyun LEE ,  Kijoo HONG

IPC: C01G53/00

CPC classification number: C01G53/006 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/84 ,  C01P2006/40

Abstract: Provided is a positive electrode active material precursor for a rechargeable lithium battery including a nickel-based composite metal hydroxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a central portion and a surface portion, and the surface portion includes a primary particle coated with manganese oxide, manganese hydroxide, or a mixture thereof.

公开(公告)号：US20230317939A1

公开(公告)日：2023-10-05

申请号：US18003881

申请日：2021-07-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kiyong AHN ,  Do-Wook JUN ,  Youngsun KONG ,  Seonyoung KWON ,  Minkyu KIM ,  Min Ju KIM ,  Dookyun LEE ,  Kijoo HONG

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  H01M4/505 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  H01M4/505 ,  C01G53/42 ,  H01M2004/021

Abstract: According to an embodiment, provided is a cathode active material for a lithium secondary battery, the cathode active material including a nickel-based composite metal oxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a central portion and a surface portion, the surface portion includes a nickel-based composite metal oxide doped with manganese, and an amount of manganese present in the grain boundaries of the plurality of primary particles present in the surface portion is greater than an amount of manganese present inside the primary particles.

公开(公告)号：US20220384801A1

公开(公告)日：2022-12-01

申请号：US17655961

申请日：2022-03-22

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngsun KONG ,  Kiyong AHN ,  Seonyoung KWON ,  Min Ju KIM ,  Dookyun LEE ,  Dowook JUN ,  Kijoo HONG

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

Abstract: A positive active material includes a nickel-based composite metal oxide having the form of secondary particles in which a plurality of primary particles are agglomerated, where each secondary particle includes a core and a shell, the primary particles of the shell are coated with a manganese-containing nickel-based composite metal oxide, and the manganese-containing nickel-based composite metal oxide has a layered structure.