Surface stabilized cathode material for lithium ion batteries and synthesizing method of the same

Patent metadata

Field	Value
Publication number	US-10597307-B2
Application number	US-201715710540-A
Country	US
Kind code	B2
Filing date	Sep 20, 2017
Priority date	Sep 21, 2016
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A compound represented by Li α Co (1-x-2y) Me x (M1M2) y O δ , (Formula (I)) wherein Me, is one or more of Li, Mg, Al, Ca, Ti, Zr, V, Cr, Mn, Fe, Ni, Cu, Zn, Ru and Sn, and wherein 0≤x≤0.3, 0<y≤0.4, 0.95≤α≤1.4, and 1.90≤δ≤2.10 is disclosed. Further, particles including such compounds are described.

First claim

What is claimed is:

1. A compound represented by Formula (I):
Li α Co (1-x-2y) Me x (M1M2) y O δ   Formula (I)

wherein Me is selected from the group consisting one or more of Li, Mg, Al, Ca, Ti, Zr, V, Cr, Mn, Fe, Ni, Cu, Zn, Ru, and Sn;
wherein M1 is a metal having a +2 oxidation state selected from the group consisting of Ni, Mg, and Zn;
wherein M2 is a metal having a +4 oxidation state selected from the group consisting of Mn, Ti, Zr, and V;
wherein M1M2 represents pairs of M1 and M2; and
wherein 0<x≤0.3, 0<y≤0.4, 0.95≤α≤1.4, and 1.90≤δ≤2.10.

2. The compound of claim 1 , wherein M1 is Ni and M2 is Mn.

3. The compound of claim 1 , wherein the compound has a trigonal crystal structure.

4. The compound of claim 1 , wherein 0<y≤0.25.

5. The compound of claim 4 , wherein 0.02≤y≤0.06.

6. The compound of claim 5 , y is about 0.04.

7. The compound of claim 4 , wherein 0.05≤y≤0.09.

8. The compound of claim 7 , y is about 0.07.

9. The compound of claim 4 , wherein 0.08≤y≤0.12.

10. The compound of claim 9 , y is about 0.10.

11. The compound of any of claim 4 , wherein 0.14≤y≤0.18.

12. The compound of claim 11 , y is about 0.16.

13. The compound of claim 4 , wherein 0.20≤y≤0.25.

14. The compound of claim 13 , y is about 0.22.

15. The compound of claim 1 , wherein M1M2 represents a pair of M1 and M2 selected from the group consisting of NiMn, NiTi, MgTi, NiZr, MgMn, MgZr, NiV, or MgV.

16. A cathode comprising a cathode current collector and a cathode active material disposed over the cathode current collector, the cathode active material comprising the compound of claim 1 .

17. A battery cell comprising:
an anode comprising an anode current collector and an anode active material disposed over the anode current collector; and
the cathode of claim 16 .

18. A portable electronic device comprising:
the battery cell of claim 17 .

Assignees

• Apple Inc

Inventors

• Dai Hongli
• Wang Dapeng
• Wu Huiming
• Strobridge Fiona Claire
• Carter John David
• Johnson Christopher S
• Wang Xiaoping
• Iddir Hakim H
• Kropf Arthur Jeremy
• Li Yan
• Maroni Victor A
• Vu Anh D
• Yang Zhenzhen
• Gutierrez Arturo
• Cui Yanjie

Classifications

• H01M10/0525

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

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• H01M4/1391

  of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• C01P2002/86

  by NMR- or ESR-data · CPC title

• C01G53/50 Primary

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