Lithium nickel-based composite oxide as a positive electrode active material for rechargeable lithium-ion batteries

Patent metadata

Field	Value
Publication number	US-2024327241-A1
Application number	US-202218574391-A
Country	US
Kind code	A1
Filing date	Jun 24, 2022
Priority date	Jun 28, 2021
Publication date	Oct 3, 2024
Grant date	—

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.

First claim

1 - 15 . (canceled)

16 . A positive electrode active material suitable 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′,
element other than Li, O, Ni, Co, Mn, S, B, Zr, and Al in a content a, wherein 0≤ a≤2.0 mol %, relative to M′, and,
soluble S in a content b between 0.1 mol % and 0.8 mol %, relative to M′,
B in a content c wherein 0≤c≤2.0 mol %, relative to M′,
Zr in a content d wherein 0≤d≤2.0 mol %, relative to M′,
Al in a content e wherein 0≤e≤2.0 mol %, relative to M′,
wherein x, y, z, a, b, c, d, and e are measured by ICP,
wherein x+y+z+a+b+c+d+e is 100.0 mol %,

wherein the positive electrode active material has a surface area between 0.6 m 2 /g and 1.1 m 2 /g, as determined by BET measurement.

17 . A positive electrode active material according to claim 16 , wherein the B content c is between 0.01 mol % and 2.0 mol %, relative to M′.

18 . A positive electrode active material according to claim 16 , wherein the Zr content d is between 0.01 mol % and 2.0 mol %, relative to M′.

19 . A positive electrode active material according to claim 16 , wherein the soluble S content b is ≤0.7 mol %, relative to M′.

20 . A positive electrode active material according to claim 16 , wherein the surface area is at most 1.05 m 2 /g, as determined by BET.

21 . A positive active material according to claim 16 , wherein the surface area is at least 0.65 m 2 /g, as determined by BET.

22 . A positive electrode active material according to claim 16 , wherein the Al content e is between 0.01 mol % and 2.0 mol %, relative to M′.

23 . Positive electrode active material according to claim 16 , wherein the Ni content x≥ 70.0 mol %, relative to M′.

24 . Positive electrode active material according to claim 16 , wherein the Co content y is between 0 mol % and 20 mol %, relative to M′; and the Mn content z is between is between 0 mol % and 20 mol %, relative to M′.

25 . Positive electrode active material according to claim 16 , wherein the secondary particle median size D50 is at least 2.0 μm and at most 15.0 μm, as determined by laser diffraction particle size analysis.

26 . A method for the manufacturing of a positive electrode active material according to claim 16 ,
wherein said method comprises the consecutive steps of:
Step 1) mixing a lithium transition metal oxide powder with water to obtain a slurry, filtering, and then drying said slurry to obtain a dried powder,
Step 2) mixing the dried powder with an aqueous solution comprising Al 2 (SO 4 ) 3 , wherein said solution comprises S in an amount between 300 ppm to 3000 ppm with respect to the weight of the dried powder, to obtain a mixture, and
Step 3) heating the mixture in an oxidizing atmosphere at a temperature between 250° C. and less than 500° C. so as to obtain the positive electrode active material powder.

27 . The method according to claim 26 , wherein in Step 3), the mixture is heated at a temperature of between 250° C. and 450° C.

28 . The method according to claim 26 , wherein in Step 2), a B containing compound is added to the solution in an amount of B between 100 ppm to 2000 ppm.

29 . A battery comprising the positive electrode active material according to claim 16 .

30 . An electric vehicle or a hybrid electric vehicle comprising the battery of claim 29 .

Assignees

• Umicore Nv

Inventors

• Song Kyeongse
• Ku Heesuk
• Karakulina Olesia
• Blangero Maxime

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/44

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• C01P2006/80

  Compositional purity · CPC title

• C01P2006/40

  Electric properties · CPC title