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

Patent metadata

Field	Value
Publication number	US-2024270599-A1
Application number	US-202218562315-A
Country	US
Kind code	A1
Filing date	May 25, 2022
Priority date	May 27, 2021
Publication date	Aug 15, 2024
Grant date	—

Abstract

The present invention relates to a lithium nickel-based composite oxide as a positive electrode active material for lithium-ion rechargeable batteries suitable for electric vehicle and hybrid electric vehicle applications, comprising lithium nickel-based oxide particles comprising tungsten.

First claim

1 - 17 . (canceled)

18 . A positive electrode active material for solid-state batteries, wherein the positive electrode active material comprises Li, M′, and oxygen, wherein M′ comprises:
Ni in a content x between 50.0 mol % and 95.0 mol %, relative to M′;
Co in a content y between 0.0 mol % and 40.0 mol %, relative to M′;
Mn in a content z between 0.0 mol % and 70.0 mol %, relative to M′;
Al in a content v between 0.1 mol % and 3.0 mol %;
W in a content w between 0.05 mol % and 2.0 mol %;
F in a content f lower than 2.0 mol %; and
elements other than Li, O, Ni, Co, Mn, Al, W and F in a content q less than 3.0 mol %, relative to M′,

wherein x, y, z, v, w and q are measured by ICP and wherein f is measured by IC;
wherein (x+y+z+v+w+f+q)=100.0 mol %;
wherein the positive electrode active material has ratios Al B /v>25.0 and W B /w>5.0,
wherein Al B and W B are determined by XPS analysis, wherein Al B and W B are expressed as mol % compared to the sum of Ni, Co, Mn, Al, W, and F, as measured by XPS analysis.

19 . Positive electrode active material according to claim 18 , wherein the ratio Al B /v is higher than 50.0.

20 . Positive electrode active material according to claim 18 , wherein Mn in a content z between 0.0 mol % and 40.0 mol %, relative to M′.

21 . Positive electrode active material according to claim 18 , wherein the ratio Al B /v is lower than 250.0 and preferably lower than 200.0.

22 . Positive electrode active material according to claim 18 , wherein the ratio W B /w is higher than 10.0, preferably higher than 21.0 and more preferably higher than 22.0.

23 . Positive electrode active material according to claim 18 , wherein the ratio W B /w is lower than 150.0 and preferably lower than 100.0.

24 . Positive electrode active material according to claim 18 , f> 0 , wherein the positive electrode active material has ratio F B /f>10.0, wherein F B is determined by XPS analysis, wherein F B is expressed as mol % compared to the sum of Ni, Co, Mn, Al, W, and F, as measured by XPS analysis.

25 . Positive electrode active material according to claim 18 , wherein said positive electrode active material comprises secondary particles comprising more than one primary particle.

26 . Positive electrode active material according to claim 18 , wherein said positive electrode active material comprises single-crystalline particles.

27 . A positive electrode for lithium-ion rechargeable batteries, comprising a positive electrode active material according to claim 18 .

28 . A polymer cell for lithium-ion rechargeable batteries, comprising a positive electrode active material according to claim 18 .

29 . A lithium-ion rechargeable battery comprising a positive electrode active material according to claim 18 .

30 . A method for manufacturing a positive electrode active material for solid-state batteries, comprising the consecutive steps of
preparing a lithium transition metal-based oxide compound, mixing said lithium transition metal-based oxide compound with sources of Al and W, thereby obtaining a mixture, and heating the mixture in an oxidizing atmosphere in a furnace at a temperature between 250° C. and less than 500° C., preferably at most 450° C., for a time between 1 hour and 20 hours so as to obtain said the positive electrode active material powder.

31 . Method according to claim 30 , wherein said mixing said lithium transition metal-based oxide compound with an additional source of F obtaining the mixture.

32 . Method according to claim 30 , wherein said positive electrode active material is the positive electrode active material according to any of claims 1 to 9 .

33 . A method for manufacturing a polymer cell for solid-state lithium-ion rechargeable battery, wherein said method comprises the steps of:
a step of preparing a solid polymer electrolyte film by mixing a first polyethylene oxide having a molecular weight of less than 1,500,000 g/mol and more than 500,000 g/mol with a lithium salt in a nonaqueous solvent; a step of preparing a positive electrode by mixing a second polyethylene oxide, a lithium salt, a positive electrode active material, and a conductor powder in a nonaqueous solvent, wherein the second polyethylene oxide has a molecular weight of less than 300,000 and more than 50,000g/mol; a step of preparing a negative electrode comprising a lithium metal; and a step of assembling the solid polymer electrolyte film, the positive electrode and the negative electrode to form a polymer cell for a solid-state rechargeable battery.

34 . A method according to claim 33 , wherein the positive electrode active material is a positive electrode active material for solid-state batteries, wherein the positive electrode active material comprises Li, M′, and oxygen, wherein M′ comprises:
Ni in a content x between 50.0 mol % and 95.0 mol %, relative to M′;
Co in a content y between 0.0 mol % and 40.0 mol %, relative to M′;
Mn in a content z between 0.0 mol % and 70.0 mol %, relative to M′;
Al in a content v between 0.1 mol % and 3.0 mol %;
W in a content w between 0.05 mol % and 2.0 mol %;
F in a content f lower than 2.0 mol %; and
elements other than Li, O, Ni, Co, Mn, Al, W and F in a content q less than 3.0 mol %, relative to M′,

wherein x, y, z, v, w and q are measured by ICP and wherein f is measured by IC;
wherein (x+y+z+v+w+f+q)=100.0 mol %;
wherein the positive electrode active material has ratios Al B /v>25.0 and W B /w>5.0,
Al B and W B are determined by XPS analysis, wherein Al B and W B are expressed as mol % compared to the sum of Ni, Co, Mn, Al, W, and F, as measured by XPS analysis.

Assignees

• Umicore Nv

Inventors

• Kang Jihoon
• Park Gyeongseo
• Paulsen Jens
• Kumakura Shinichi

Classifications

• C01G53/82 Primary

  Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M10/0565

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• H01M10/0525

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