公开(公告)号：US20220069299A1

公开(公告)日：2022-03-03

申请号：US17414998

申请日：2019-12-10

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： KyeongSe SONG ,  AReum PARK ,  HeeSuk KU ,  JinWook KIM

IPC: H01M4/525 ,  H01M4/04

Abstract: A cobalt oxide precursor powder for use in preparing a positive electrode active material and methods of production thereof are described. The precursor powder comprises particles has a Fd-3m structure and a formula Co1-yAyOx, wherein 1

公开(公告)号：US20240327241A1

公开(公告)日：2024-10-03

申请号：US18574391

申请日：2022-06-24

Applicant: Umicore

Inventor： KyeongSe SONG ,  HeeSuk KU ,  Olesia KARAKULINA ,  Maxime BLANGERO

IPC: C01G53/00 ,  H01M10/0525 ,  H01M10/44

CPC classification number: C01G53/50 ,  H01M10/0525 ,  H01M10/44 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/80 ,  H01M2220/20

Abstract: The invention relates to a positive electrode active material for suitable for electric vehicle (EV) and hybrid electric vehicle (HEV) applications, wherein said material comprises lithium transition metal-based oxide particles comprising soluble S content and having a high specific surface area.

公开(公告)号：US20250059063A1

公开(公告)日：2025-02-20

申请号：US18721936

申请日：2022-12-15

Applicant: Umicore

Inventor： KyeongSe SONG ,  HeeSuk KU ,  Maxime BLANGERO

IPC: C01G51/00

Abstract: A positive electrode active material for lithium-ion secondary batteries comprises Li, Co, O, and optionally M′. M′ comprises Al and/or Ti and optionally one or more elements selected from the group consisting of Ni, Mn, B, Sr, Mg, Nb, W, F, and Zr. A molar ratio of Co to M′+Co (Co/(M′+Co)) is more than 0.90. The positive electrode active material comprises a first LCO powder and a second LCO powder that are both single-crystalline powders. The first LCO powder has a first median particle size D50A of between 12 μm and 25 μm, the second LCO powder has a second median particle size D50B of between 3 μm and 8 μm, and the volume fraction of the second LCO powder relative to the total volume of the positive electrode active material is between 10% and 40%.