公开(公告)号：US11335907B2

公开(公告)日：2022-05-17

申请号：US17019626

申请日：2020-09-14

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Maxime Blangero ,  Da-In Choi ,  WooRam Cho ,  JiHye Kim

IPC: H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/1391 ,  H01M10/052 ,  H01M4/131 ,  H01M4/02

Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1−a−b−cMaM′bM″c]1−xO2−z. M is one or more elements of the group Mn, Zr and Ti. M′ is one or more elements of the group Al, B and Co. M″ is a dopant different from M and M′, and x, a, b and c are expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05. The material has an unconstrained cumulative volume particle size distribution value (Γ0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (ΓP(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (ΓP(D10P=300)). When ΓP(D10P=200) is compared to Γ0(D10P=0), the relative increase in value is less than 100%. When ΓP(D10P=300) is compared to Γ0(D10P=0), the relative increase in value is less than 120%.

公开(公告)号：US20210320354A1

公开(公告)日：2021-10-14

申请号：US17259662

申请日：2019-07-10

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Liang ZHU ,  Jeong-Rae KIM ,  AReum PARK ,  YuRi LEE

IPC: H01M50/103 ,  H01M50/136 ,  H01M4/525 ,  H01M10/0525

Abstract: A secondary Li-ion battery comprising a casing comprising as battery parts: a positive electrode comprising a powderous positive electrode active material, a negative electrode, a separator, and an electrolyte, wherein the casing is provided with means for maintaining the exterior form of the casing, and wherein the positive electrode active material has the general formula Li1+a(NixCoyMz)1−aO2, wherein M=M′1−bAb, M′ being either one or both of Al and Mg, and A being a dopant with b≤0.10, and wherein −0.03≤a≤0.03, 0.80≤×≤0.95, 0.05≤y≤0.20, z≤0.10, with x+y+z=1, and wherein the positive electrode active material has a crystallite size ≤43 nm as determined by the Sherrer equation based on the peak of the (104) plane obtained from the X-ray diffraction pattern using a Cu Kα radiation source, and wherein the positive electrode active material further comprises between 0.4 and 0.6 wt % LiOH.

公开(公告)号：US11114662B2

公开(公告)日：2021-09-07

申请号：US16487525

申请日：2018-02-14

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Areum Park ,  JiHye Kim ,  Song-Yi Han ,  Jens Martin Paulsen ,  Kyung-Tae Lee ,  Randy De Palma

IPC: H01M4/505 ,  C01G53/00 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li1−a((Niz(Ni1/2 Mn1/2)yCox)1−k Ak)1+aO2, wherein x+y+z=1, 0.1≤x≤0.4, 0.25≤z≤0.52, A is a dopant, 0≤k≤0.1, and 0.03≤a≤0.35, wherein the precursor has a crystalline size L expressed in nm, with 15≤L≤36. Also a method is described for manufacturing a positive electrode material having a general formula Li1+a′M′1−a−O2, with M′=(Niz(Ni1/2 Mn1/2)yCOx)1−k Ak, wherein x+y+z=1.0.1≤x≤0.4, 0.25≤z≤0.52, A is a dopant, 0≤k≤0.1, and 0.01≤a′≤0.10, by sintering the lithium deficient precursor powder mixed with either one of LiOH, LiOH.H2O, in an oxidizing atmosphere at a temperature between 800 and 1000° C., for a time between 6 and 36 hrs.

公开(公告)号：US20210143423A1

公开(公告)日：2021-05-13

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

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04

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：US20210119204A1

公开(公告)日：2021-04-22

申请号：US16956025

申请日：2018-12-04

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Yagmur CELASUN ,  Jens PAULSEN ,  Shinichi KUMAKURA ,  AReum PARK ,  JuKyoung LEE ,  TaeHyeon YANG

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/04

Abstract: The invention provides a positive electrode active material for a lithium ion battery, comprising a lithium transition metal-based oxide powder, the powder comprising single crystal monolithic particles comprising Ni and Co and having a general formula Li1+a ((Niz (Ni1/2 Mn1/2)y Cox)1-kAk)1-a 02, wherein A is a dopant, −0.02

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：US10862121B2

公开(公告)日：2020-12-08

申请号：US16212244

申请日：2018-12-06

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Jens Paulsen ,  HyeYun Yang

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/505

Abstract: A positive electrode for a rechargeable battery comprising at least 95% active cathode material with an electrode loading of at least 6 mg/cm2, and preferably at least 10 mg/cm2, and an electrode porosity of less than 2%, and preferably less than 1%. The active cathode material may comprise a bimodal composition wherein at least 70% consists of a first lithium cobalt based oxide powder having an average particle size (D50) of at least 25 μm and a BET value

公开(公告)号：US20200381727A1

公开(公告)日：2020-12-03

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

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525 ,  C01G53/00

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.

公开(公告)号：US20200168908A1

公开(公告)日：2020-05-28

申请号：US16088893

申请日：2017-03-09

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Jeong-Rae Kim ,  Gyeong-Ok Kim ,  Xin Xia ,  Jing Zhang

IPC: H01M4/525 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/505 ,  H01M10/0567 ,  H01M10/0569

Abstract: A rechargeable lithium ion battery comprising a positive electrode, a negative electrode and an electrolyte, the positive electrode comprising a lithium nickel manganese cobalt oxide-based powder with particles comprising a core and a surface layer, the core having a layered crystal structure comprising the elements Li, M and oxygen, wherein M has the formula M=(Niz(Ni1/2Mn1/2)yCox)1-kAk, with 0.13≤x≤0.30, 0.20≤z≤0.55, x+y+z=1 and 0

公开(公告)号：US20200020944A1

公开(公告)日：2020-01-16

申请号：US16562694

申请日：2019-09-06

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Areum PARK ,  JiHye KIM ,  Song-Yi HAN ,  Jens Martin PAULSEN ,  Kyung-Tae LEE ,  Randy De Palma

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0525

Abstract: A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li1−a((Niz(Ni0.5Mn0.5)yCox)1−kAk)1+aO2, wherein A comprises at least one element of the group consisting of: Mg, Al, Ca, Si, B, W, Zr, Ti, Nb, Ba, and Sr, with 0.05≤x≤0.40, 0.25≤z≤0.85, x+y+z=1, 0≤k≤0.10, and 0≤a≤0.053, wherein said crystalline precursor powder has a crystalline size L, expressed in nm, with 15≤L≤36.