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1.发明授权公开(公告)号：US11271203B2
公开(公告)日：2022-03-08
申请号：US16955906
申请日：2018-12-19
Applicant: UMICORE , UMICORE KOREA LTD.
Inventor： Shinichi Kumakura , Jens Paulsen , TaeHyeon Yang , HyeJeong Yang , Song-Yi Han
Abstract: A method for preparing a N(M)C-based positive electrode materials according to the present invention comprises the following steps: —Precipitation of a metal (at least Ni— and Co—, preferably comprising Mn—) bearing precursor (MBP), —Fractionation of the MBP in a first (A) fraction and at least one second (B) fraction, —Lithiation of each of the first and second fraction, wherein the A fraction is converted into a first polycrystalline lithium transition metal oxide-based powder and the B fraction(s) is(are) converted into a second lithium transition metal oxide-based powder and, and —Mixing the first and second monolithic lithium transition metal oxide-based powder to obtain the N(M)C-based positive electrode material.
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Patent Agency Ranking
公开(公告)号：US12300806B2
公开(公告)日：2025-05-13
申请号：US17007464
申请日：2020-08-31
Applicant: UMICORE , UMICORE KOREA LTD.
Inventor： Dae-Hyun Kim , Jens Paulsen , Shinichi Kumakura , YuRi Lee , Liang Zhu , TaeHyeon Yang
Abstract: A bimodal lithium transition metal oxide based powder mixture comprises a first and a second lithium transition metal oxide based powder. The first powder comprises particles of a material A comprising the elements Li, a transition metal based composition M and oxygen. The first powder has a particle size distribution characterized by a (D90−D10)/D50≤1.5. The second powder comprises a material B having single crystal particles, said particles having a general formula Li+bN′−bO2, wherein −0.03≤b≤0.10, and N′=NixM″yCozEd, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, wherein M″ is one or both of Mn or Al, and E is a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has a D50 between 2 and 4.5 μm. The weight ratio of the second powder in the mixture is between 15 and 60 wt %.
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公开(公告)号：US12294078B2
公开(公告)日：2025-05-06
申请号：US17623688
申请日：2020-07-02
Applicant: UMICORE , UMICORE KOREA LTD.
Inventor： Shinichi Kumakura , TaeHyeon Yang , Jens Paulsen , Maxime Blangero , Elsye Agustina
Abstract: A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles comprising a core and a surface layer, said surface layer being on top of said core, said particles comprising the elements: Li, a metal M′ and oxygen, wherein the metal M′ has a formula: M′=(NizMnyCox)1-kAk, wherein A is a dopant, 0.55≤z≤0.89, 0.05≤y≤0.25, 0.05≤x≤0.25, x+y+z+k=1, and k≤0.01, said positive electrode active material powder having a mean particle size D50 ranging from 3 μm to 15 μm and a surface layer thickness ranging from 5 nm to 200 nm. The surface layer comprises aluminum in a content superior or equal to 0.04 wt % and inferior or equal to 0.15 wt % relative to the total weight of the positive electrode active material.
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公开(公告)号：US12255326B2
公开(公告)日：2025-03-18
申请号：US17041022
申请日：2019-03-13
Applicant: UMICORE , UMICORE KOREA LTD.
Inventor： Jens Paulsen , Shinichi Kumakura , TaeHyeon Yang , Dae-Hyun Kim , HyeJeong Yang
Abstract: A method for preparing a powderous positive electrode material comprising single crystal monolithic particles and having a general formula
Li1+a((Niz(Ni1/2Mn1/2)yCox)1-k Ak)1-aO2, wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05 is described. The method comprises providing a mixture comprising a Ni- and Co- bearing precursor and a Li bearing precursor, subjecting the mixture to a multiple step sintering process whereby in the final sintering step a sintered lithiated intermediate material is obtained comprising agglomerated primary particles having a primary particle size distribution with a D50 between 2.0 and 8.0 μm, subjecting the lithiated intermediate material to a wet ball milling step to deagglomerate the agglomerated primary particles and obtain a slurry comprising deagglomerated primary particles, separating the deagglomerated primary particles from the slurry, and heat treating the deagglomerated primary particles at a temperature between 300° C. and at least 20° C. below the temperature in the final sintering step.-
公开(公告)号：US11949096B2
公开(公告)日：2024-04-02
申请号：US16976884
申请日：2019-02-25
Applicant: UMICORE , UMICORE KOREA LTD.
Inventor： Dae-Hyun Kim , Jens Paulsen , Shinichi Kumakura , YuRi Lee , Liang Zhu , TaeHyeon Yang
CPC classification number: H01M4/364 , H01M4/131 , H01M4/134 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A bimodal lithium transition metal oxide based powder mixture comprising a first and a second lithium transition metal oxide based powder. The first powder comprises a material A having a layered crystal structure comprising the elements Li, a transition metal based composition M and oxygen and has a particle size distribution with a span
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公开(公告)号：US11916224B2
公开(公告)日：2024-02-27
申请号：US16976879
申请日：2019-02-25
Applicant: UMICORE , UMICORE KOREA LTD.
Inventor： Dae-Hyun Kim , Jens Paulsen , Shinichi Kumakura , YuRi Lee , Liang Zhu , TaeHyeon Yang
CPC classification number: H01M4/364 , H01M4/131 , H01M4/134 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A bimodal lithium transition metal oxide based powder mixture comprises a first and a second lithium transition metal oxide based powder. The first powder comprises particles of a material A comprising the elements Li, a transition metal based composition M and oxygen. The first powder has a particle size distribution characterized by a (D90−D10)/D50
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