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：US20230387406A1

公开(公告)日：2023-11-30

申请号：US18153080

申请日：2023-01-11

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Youngsun KONG ,  Wonmo SEONG ,  Seok Mun KANG ,  Naoyuki HASE ,  Jaesang YOON ,  Do-Wook JUN

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

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  C01G53/50 ,  H01M2004/021

Abstract: A positive active material for rechargeable lithium batteries is provided to include: a first positive active material including a layered cobalt-free lithium nickel-based composite oxide, being in a form of a secondary particle in which a plurality of primary particles are aggregated, and having an average particle diameter of about 8 μm to about 20 μm; and a second positive active material including a layered cobalt-free lithium nickel-based composite oxide, being in a form of a single particle, and having an average particle diameter of about 1 μm to about 7 μm, wherein a molar amount of nickel based on the total molar amount of elements excluding lithium and oxygen in the second positive active material is about 1 mol % to about 10 mol % more than a molar amount of nickel based on the total molar amount of elements excluding lithium and oxygen in the first positive active material.

公开(公告)号：US20200295368A1

公开(公告)日：2020-09-17

申请号：US16817163

申请日：2020-03-12

Applicant: Samsung SDI Co., Ltd.

Inventor： Youngsun KONG ,  Kiyong AHN ,  Jinyoung KIM ,  Sung Ho CHOO ,  Seonyoung KWON

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

Abstract: A positive active material for a rechargeable lithium battery includes nickel-based lithium transition metal oxide secondary particles, in which a plurality of primary particles are aggregated. The primary particles include polycrystalline primary particles composed of 2 to 10 single crystals, and each of the single crystals has a particle diameter of about 0.5 μm to about 3 μm.