公开(公告)号：US20220271328A1

公开(公告)日：2022-08-25

申请号：US17623720

申请日：2020-07-02

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Maxime BLANGERO ,  KyungSub JUNG ,  Bin-Na YUN ,  Olesia KARAKULINA

IPC: H01M10/0525 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/131

Abstract: A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles, said particles comprising a core and a surface layer, said surface layer being on top of said core, said particles comprising the elements: Li, M′ and oxygen, wherein M′ has a formula: M′=NizMnyCoxAk, wherein A is a dopant, 0.60≤z≤0.90, 0.05≤y≤0.20, 0.05≤x≤0.20, x+y+z+k=1, and k≥0.01, said positive electrode active material powder having a median particle size D50 ranging from 5 μm to 15 μm, a span ranging from 0.25 to 0.90, and a surface layer thickness ranging from 10 nm to 200 nm, said surface layer comprising: sulfur in a content superior or equal to 0.150 wt % and inferior or equal to 0.375 wt % with respect to the total weight of the positive electrode active material powder, and sulfate ion (SO42−) in a content superior or equal to 4500 ppm and inferior or equal to 11250 ppm.

公开(公告)号：US20220278321A1

公开(公告)日：2022-09-01

申请号：US17623682

申请日：2020-07-02

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Maxime BLANGERO ,  KyungSub JUNG ,  Bin-Na YUN ,  Olesia KARAKULINA

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

Abstract: A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles, said particles comprising a core and a surface layer, said surface layer being on top of said core, said particle comprising the elements: Li, M′ and oxygen, wherein M′ has a formula: M′=NizMnyCoxAk, wherein A is a dopant, 0.80≤z≤0.90, 0.05≤y≤0.20, 0.05≤x≤0.20, x+y+z+k=1, and 0≤k≤0.01, said positive electrode active material powder having a median particle size D50 ranging from 5 μm to 15 μm and a surface layer thickness ranging from 10 nm to 200 nm, said surface layer comprising sulfate ion (SO42−) in a content superior or equal to 6.78·z−4.83 wt % and inferior or equal to 6.78·z−4.33 wt % with respect to the total weight of the positive electrode active material.

公开(公告)号：US20220271282A1

公开(公告)日：2022-08-25

申请号：US17623729

申请日：2020-07-02

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Maxime BLANGERO ,  KyungSub JUNG ,  Bin-Na YUN ,  Olesia KARAKULINA

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

Abstract: 1. A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles, said particles comprising a core and a surface layer, said surface layer being on top of said core, said particles comprising the elements: Li, M′ and oxygen, wherein M′ has a formula: M′=NizMnyCoxAk, wherein A is a dopant, 0.60≤z≤0.89, 0.05≤y≤0.20, 0.05≤x≤0.20, x+y+z+k=1, and k≤0.01, said positive electrode active material powder having a median particle size D50 ranging from 5 μm to 15 μm, a span ranging from 0.25 to 0.90, and a surface layer thickness ranging from 10 nm to 200 nm, said surface layer comprising: sulfur in a content superior or equal to 0.150 wt % and inferior or equal to 0.375 wt % with respect to the total weight of the positive electrode active material powder, and aluminum in a content superior or equal to 0.05 wt % and inferior or equal to 0.15 wt % with respect to the total weight of the positive electrode active material powder,

公开(公告)号：US20220271275A1

公开(公告)日：2022-08-25

申请号：US17623694

申请日：2020-07-02

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Maxime BLANGERO ,  KyungSub JUNG ,  Bin-Na YUN ,  Olesia KARAKULINA

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

Abstract: A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles, said 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′=(Niz(Ni0.5Mn0.5)yCox)1-kAk, wherein A is a dopant, 0.60≤z≤0.86, 0.05≤y≤0.20, 0.05≤x≤0.20, x+y+z+k=1, and k≤0.01, said positive electrode active material powder having a median particle size D50 ranging from 5 μm to 15 μm and a surface layer thickness ranging from 10 nm to 200 nm,
said surface layer comprising: sulfur in a content superior or equal to 0.150 wt % and inferior or equal to 0.375 wt % with respect to the total weight of the positive electrode active material powder, and aluminum in a content superior or equal to 0.05 wt % and inferior or equal to 0.15 wt % with respect to the total weight of the positive electrode active material powder, said surface layer of lithium transition metal-based oxide particles comprising a LiAlO2 phase and an LiM″1-aAlaO2 phase with M″ comprising: Ni, Mn, and Co, said LiAlO2 phase being present in the surface layer in a content superior or equal to 0.10 at % and inferior or equal to 0.30 at % with respect to the total atomic content of M′ in the positive electrode active material powder, said LiM″1-aAlaO2 phase being present in the surface layer in a content inferior to 0.14 at % with respect to the total atomic content of M′ in the positive electrode active material powder.

公开(公告)号：US20220255067A1

公开(公告)日：2022-08-11

申请号：US17623676

申请日：2020-07-02

Applicant: UMICORE ,  UMICORE KOREA LTD.

Inventor： Maxime BLANGERO ,  KyungSub JUNG ,  Bin-Na YUN ,  Olesia KARAKULINA

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00

Abstract: A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles, said particles comprising a core and a surface layer, said surface layer being on top of said core, said particles comprising the elements: Li, M′ and oxygen, wherein M′ has a formula: M′=NizMnyCoxAk, wherein A is a dopant, 0.60≤z≤0.86, 0.05≤x≤0.20, x+y+z+k=1, and k≤0.01, said positive electrode active material powder having a median particle size D50 ranging from 5 μm to 15 μm and a surface layer thickness ranging from 10 nm to 200 nm,
said surface layer comprising: sulfur in a content superior or equal to 0.150 wt % and inferior or equal to 0.375 wt % with respect to the total weight of the positive electrode active material powder, and sulfate ion (SO42−) in a content superior or equal to 4500 ppm and inferior or equal to 11250 ppm.

公开(公告)号：US20240243277A1

公开(公告)日：2024-07-18

申请号：US18562318

申请日：2022-05-27

Applicant: UMICORE

Inventor： Bin-Na YUN ,  KyungSub JUNG ,  Ji-Yeong KWON ,  Woon-Hyoung RYU ,  SeungHwan LEE ,  Maxime BLANGERO

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/505 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M4/0471 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present invention provides a positive electrode active material for lithium-ion rechargeable batteries, wherein the positive electrode active material comprises Li, M′, and oxygen, wherein M′ comprises:



Ni in a content x between 60.0 mol % and 95.0 mol %, relative to M′;
Co in a content y, wherein 0≤y≤40.0 mol %, relative to M′;
Mn in a content z, wherein 0≤z≤70.0 mol %, relative to M′;
D in a content a, wherein 0≤a≤2.0 mol %, relative to M′, wherein D comprises an element other than Li, O, Ni, Co, Mn, F, W and S;
F in a content b, wherein b>0, preferably b is between 0.1 mol % and 4.0 mol %, relative to M′;
W in a content c, wherein c>0, preferably 0.01≤c≤4.0 mol %, relative to M′;
S in a content d, wherein d>0, preferably between 0.01 mol % and 3.0 mol %, relative to M′; and,
B in a content e, wherein 0≤e≤4.0 mol %, relative to M′; and,
wherein x, y, z, a, c, and d are measured by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES),
wherein b is measured by Ion chromatography (IC),
wherein x+y+z+a+b+c+d is 100.0 mol %,

wherein the positive electrode active material has a F content FA defined as










b

(

x
+
y
+
z
+
b
+
c
+
d

)


,




W content WA defined as





c

(

x
+
y
+
z
+
b
+
c
+
d

)


,




and S content SA defined as





d

(

x
+
y
+
z
+
b
+
c
+
d

)


,




wherein the positive electrode active material has a F content FB, W content WB, and S content SB wherein FB, WB, and SB are determined by X-ray photoelectron spectroscopy (XPS) analysis, wherein FB, WB, and SB are each expressed as molar fraction compared to the sum of molar fractions of Co, Mn, Ni, F, W and S as measured by XPS analysis,

wherein the ratio FB/FA>1.0,

wherein the ratio WB/WA>1.0, and

wherein the ratio SB/SA>1.0.

公开(公告)号：US20240243276A1

公开(公告)日：2024-07-18

申请号：US18562316

申请日：2022-05-27

Applicant: UMICORE

Inventor： Bin-Na YUN ,  KyungSub JUNG ,  Ji-Yeong KWON ,  Woon-Hyoung RYU ,  SeungHwan LEE ,  Maxime BLANGERO

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M2004/028 ,  H01M4/623 ,  H01M10/0525

Abstract: The present invention provides a positive electrode active material for lithium-ion rechargeable batteries, wherein the positive electrode active material comprises Li, M′, and oxygen, wherein M′ comprises: —Ni in a content x between 60.0 mol % and 95.0 mol %, relative to M′; —Co in a content y, wherein 0) 0, preferably between 0.1 mol % and 4.0 mol %, relative to M′; —W in a content c between 0.1 mol % and 4.0 mol %, relative to M′; —B in a content e, wherein 0 1.0, wherein the ratio WB/WA>1.0.