Cathode active materials for lithium-ion batteries

Patent metadata

Field	Value
Publication number	US-10141572-B2
Application number	US-201715804186-A
Country	US
Kind code	B2
Filing date	Nov 6, 2017
Priority date	Mar 14, 2016
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

Compounds, powders, 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 (III):
Li α Co 1−x M x Al γ O δ   (III)

wherein:
M is Mn,
0.95≤α≤1.10,
0<x<0.08,
0<γ≤0.05, and
1.95≤δ≤2.60.

2. The compound of claim 1 , wherein 0.01≤γ≤0.03.

3. The compound of claim 1 , wherein 0.02≤γ≤0.03.

4. The compound of claim 1 , wherein 0.002≤γ≤0.004.

5. The compound of claim 1 , wherein 0.001≤γ≤0.005.

6. The compound of claim 1 , wherein Al is in an amount of at least 2000 ppm.

7. The compound of claim 1 , wherein Al is in an amount of at least 900 ppm.

8. The compound of claim 1 , wherein Al is in an amount of at least 500 ppm.

9. The compound of claim 1 , wherein the compound has an R 3 m crystal.

10. The compound of claim 1 , wherein 0.95≤α≤1.00.

Assignees

• Apple Inc

Inventors

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

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/582

  Halogenides · CPC title

• H01M4/485

  of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title

• H01M4/502

  for non-aqueous cells (H01M4/505 takes precedence) · CPC title

• H01M4/5825

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title