Cathode active materials for lithium ion batteries

Patent metadata

Field	Value
Publication number	US-2021057740-A1
Application number	US-202016999328-A
Country	US
Kind code	A1
Filing date	Aug 21, 2020
Priority date	Aug 21, 2019
Publication date	Feb 25, 2021
Grant date	—

Abstract

Compounds, particles, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.

First claim

We claim:

1 . 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<x≤0.050, 0<y≤0.040, 0<z≤0.070, 0≤w≤0.020, and 1.90≤δ≤2.10, wherein Me is selected from Zr, Mg, Ti, and a combination thereof.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

17 . A plurality of particles comprising the compound of claim 1 .

18 . A cathode active material comprising the plurality of particles of claim 17 .

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 f Ni u Al v O δ   (II)

wherein Me is selected from Al, Zr, Mg, and Ti, wherein 0.95≤α≤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 a coating comprising an oxide selected from Al 2 O 3 , ZrO 2 , MgO, TiO 2 , and a combination thereof.

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.

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

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• H01M10/0525

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

• Y02E60/10

  Energy storage using batteries · CPC title

• C01P2006/10

  Solid density · CPC title

• C01G51/42 Primary

  containing alkali metals, e.g. LiCoO2 · CPC title