Cathode active materials for lithium-ion batteries

Patent metadata

Field	Value
Publication number	US-2018062156-A1
Application number	US-201715804186-A
Country	US
Kind code	A1
Filing date	Nov 6, 2017
Priority date	Mar 14, 2016
Publication date	Mar 1, 2018
Grant date	—

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<0.50, 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 . A compound of Formula (VII):
Li α Co 1−x−y M y Mn x O δ   (VII)
wherein M is at least one element selected from the group consisting of B, Na, Mg, Ti, Ca, V, Cr, Fe, Co, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Ru, and Mo, 0.95≦α≦1.30, 0<x≦0.30, 0≦γ≦0.10, and 1.98≦δ≦2.04.

11 . The compound according to claim 10 , wherein 0.98≦α≦1.16 and 0<x≦0.16.

12 . The compound according to claim 11 , wherein 0≦γ≦0.05.

13 . The compound according to claim 10 , wherein the compound has a single phase.

14 . The compound according to claim 10 , wherein the compound has a trigonal R 3 m crystal structure.

15 . A compound represented by Formula (VIII):
Li α Co 1−x−y Al y Mn x O δ   (VIII)
wherein: 0.95≦α≦1.30, 0<x≦0.30, 0≦γ≦0.10, and 1.98≦δ≦2.04.

16 . The formula of claim 15 , wherein:
0.96≦α≦1.04, and 0<x≦0.10.

17 . The formula of claim 15 , wherein:
0.98≦α≦1.01, 0.02≦x≦0.04, and 0≦γ≦0.03.

18 . The compound of claim 15 , wherein the compound has a single crystalline phase.

19 . The compound of claim 15 , wherein the compound has a trigonal R 3 m crystal structure.

Assignees

• Apple Inc

Inventors

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

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title

• H01M4/582

  Halogenides · CPC title

• H01M4/523

  for non-aqueous cells (H01M4/525 takes precedence) · CPC title