Cathode active materials for lithium ion batteries

Patent metadata

Field	Value
Publication number	US-12074321-B2
Application number	US-202016999328-A
Country	US
Kind code	B2
Filing date	Aug 21, 2020
Priority date	Aug 21, 2019
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

Compounds, particles, and cathode active materials that include lithium, cobalt, manganese, nickel, aluminum, and other elements can be used in lithium ion batteries. The cathode active materials include compounds having the general Formula (I): compound represented by Formula (I): LiαCO1-x-y-zMewMnxNiyAlzOδ, as well as Formula (II): LiαCO1-s-u-vMesMntNiuAlyOδ.

First claim

We claim:

1. A plurality of particles comprising a compound represented by Formula (I):
Li α Co 1-x-y-z Me w Mn x Ni y Al z O δ   (I)

wherein 0.95≤α≤1.05, 0.005≤x≤0.050, 0.005≤y≤0.040, 0<z≤<0.070, 0≤w≤0.020, and 1.90≤δ≤2.10;
wherein Me is Zr, and
wherein a BET surface area of an average particle is 0.111 to 0.121 m 2 /g.

2. The plurality of particles of claim 1 , wherein the compound comprises Al from Al 2 O 3 coating.

3. The plurality of particles of claim 1 , wherein the compound comprises Al from doping for a core.

4. The plurality of particles of claim 1 , wherein Me is from an oxide coating.

5. The plurality of particles of claim 1 , wherein Me is from doping for a core.

6. The plurality of particles of claim 1 , wherein x for Mn is from 0.010 to 0.035.

7. The plurality of particles of claim 1 , wherein x for Mn is from 0.005 to 0.015.

8. The plurality of particles of claim 1 , wherein y for Ni is from 0.010 to 0.030.

9. The plurality of particles of claim 1 , wherein y for Ni is from 0.010 to 0.025.

10. The plurality of particles of claim 1 , wherein y for Ni is from 0.010 to 0.015.

11. The plurality of particles of claim 1 , wherein z for Al is equal to or less than 0.055.

12. The plurality of particles of claim 1 , wherein z for Al is equal to or less than 0.035.

13. The plurality of particles of claim 1 , wherein z for Al is equal to or less than 0.015.

14. The plurality of particles of claim 1 , wherein w for Me is equal to or less than 0.015.

15. The plurality of particles of claim 1 , wherein w for Me is equal to or less than 0.010.

16. The plurality of particles of claim 1 , wherein w for Me is equal to or less than 0.005.

17. The plurality of particles of claim 1 , wherein the BET surface area of an average particle is selected from 0.121 m 2 /g and 0.111 m 2 /g.

18. A cathode active material comprising the plurality of particles of claim 1 .

19. A cathode comprising the cathode active material of claim 18 .

20. A battery comprising:
a cathode of claim 19 ;
a separator; and
an anode.

21. A particle comprising
a core comprising a compound of Formula (II)
Li α CO 1-s-t-u-v Me s Mn t Ni u Al v O δ   (II)

and a coating comprising an oxide selected from Al 2 O 3 , ZrO 2 , MgO, TiO 2 , and a combination thereof;
wherein Me is Zr,
wherein 0.95≤a≤1.05, 0<t≤0.050, 0<u≤0.040, 0<v≤0.050, 0≤s≤0.020, and 1.90≤δ≤2.10, and
wherein a BET surface area of the particle is 0.111 to 0.121 m 2 /g.

22. The particle of claim 21 , wherein Me or Al is from a doping material for the core.

23. The particle of claim 21 , wherein t for Mn is from 0.010 to 0.035.

24. The particle of claim 21 , wherein t for Mn is from 0.010 to 0.025.

25. The particle of claim 21 , wherein t for Mn is from 0.005 to 0.015.

26. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.030.

27. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.025.

28. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.020.

29. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.015.

30. The particle of claim 21 , wherein v for Al is equal to or less than 0.035.

31. The particle of claim 21 , wherein v for Al is equal to or less than 0.025.

32. The particle of claim 21 , wherein v for Al is equal to or less than 0.015.

33. The particle of claim 21 , wherein w for Me is equal to or less than 0.010.

34. The particle of claim 21 , wherein w for Me is equal to or less than 0.05.

35. A cathode active material comprising the plurality of particles of claim 21 .

36. A cathode comprising the cathode active material of claim 35 .

37. A battery comprising:
a cathode of claim 36 ;
a separator; and
an anode.

38. The particle of claim 21 , wherein the BET surface area of the particle is selected from 0.121 m 2 /g and 0.111 m 2 /g.

Assignees

• Apple Inc

Inventors

• Dai Hongli
• Wu Huiming
• Lin Chi-Kai
• Erickson Michael J
• Wang Xiaoping
• Li Yan
• Cui Yanjie
• Gilbert James A
• Yang Zhenzhen
• Vu Anh D
• Kropf Arthur Jeremy
• Iddir Hakim H
• Johnson Christopher S
• Carter John David

Classifications

• H01M10/0525

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

• C01P2006/40

  Electric properties · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• C01G53/50

  of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 · CPC title

• C01P2004/84

  one phase coated with the other · CPC title