公开(公告)号：US20210028455A1

公开(公告)日：2021-01-28

申请号：US16931513

申请日：2020-07-17

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： KyeongSe SONG ,  Maxime BLANGERO

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/04 ,  H01M4/131 ,  H01M10/0525

Abstract: A lithium cobalt-based oxide cathode active material powder comprising particles having a median particle size D50 of superior or equal to 20 μm, preferably 25 μm, and inferior or equal to 45 μm, said particles having an averaged circularity of superior or equal to 0.85 and inferior or equal to 1.00, said particles having a general formula Li1+aCo1−x−y−zAlxM′yMezO2, wherein M′ and Me comprise at least one element of the group consisting of: Ni, Mn, Nb, Ti, W, Zr, and Mg, with −0.01≤a≤0.01, 0.002≤x≤0.050, 0≤y≤0.020 and 0≤z≤0.050, the cathode active material powder having a specific floating capacity of at most 80 mAh/g.

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：US20210028454A1

公开(公告)日：2021-01-28

申请号：US16931501

申请日：2020-07-17

Applicant: Umicore ,  Umicore Korea Ltd

Inventor： KyeongSe SONG ,  Maxime BLANGERO

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

Abstract: A lithium cobalt-based oxide cathode active material powder comprising particles having a median particle size D50 of superior or equal to 20 μm, preferably 25 μm, and inferior or equal to 45 μm, said particles having an averaged circularity of superior or equal to 0.85 and inferior or equal to 1.00, said particles having a general formula Li1+aCo1−x−y−zAlxM′yMezO2, wherein M′ and Me comprise at least one element of the group consisting of: Ni, Mn, Nb, Ti, W, Zr, and Mg, with −0.01≤a≤0.01, 0.002≤x≤0.050, 0≤y≤0.020 and 0≤z≤0.050, said lithium cobalt-based oxide particles having a R-3m structure and (018) diffraction peak asymmetry factor AD(018) of superior or equal to 0.85 and inferior or equal to 1.15, said diffraction peak asymmetry factor being obtained by a synchrotron XRD spectrum analysis with an emission wavelength λ value equal to 0.825 Å.

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：US20230040464A1

公开(公告)日：2023-02-09

申请号：US17783339

申请日：2020-12-01

Applicant: UMICORE

Inventor： Jens PAULSEN ,  KyeongSe SONG

IPC: C01G51/00 ,  H01M10/0525

Abstract: A lithium cobalt-based oxide cathode active material powder having: —a primary phase comprising Li, Co, and O, and —a secondary phase comprising LiNaSO4, wherein the content of said LiNaSO4 secondary phase in said powder is of at least 0.4 wt. % and inferior or equal to 1.1 wt. % with respect to a total weight of the cathode active material powder, said cathode active material powder being characterized in that it has a S/Na atomic ratio superior or equal to 0.80 and inferior or equal to 1.20.

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%.