Cathode active materials having improved particle morphologies

Patent metadata

Field	Value
Publication number	US-10593941-B2
Application number	US-201816057388-A
Country	US
Kind code	B2
Filing date	Aug 7, 2018
Priority date	Sep 20, 2016
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

Mixed-metal oxides and lithiated mixed-metal oxides are disclosed that involve compounds according to, respectively, Ni x Mn y Co z Me α O β and Li 1+γ Ni x Mn y Co z Me α O β . In these compounds, Me is selected from B, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Fe, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ru, Ag, In, and combinations thereof; 0≤x≤1; 0≤y≤1; 0≤z<1; x+y+z>0; 0≤α≤0.5; and x+y+α>0. For the mixed-metal oxides, 1≤β≤5. For the lithiated mixed-metal oxides, −0.1≤γ≤1.0 and 1.9≤β≤3. The mixed-metal oxides and the lithiated mixed-metal oxides include particles having an average density greater than or equal to 90% of an ideal crystalline density.

First claim

What is claimed is:

1. A compound according to Formula (I):
( v )[MnO 2 ].(1− v )[Co 1−σ Al σ O 2 ]  (I)

wherein
0<σ≤0.05, and
0.01≤v≤0.50.

2. The compound of claim 1 , wherein 0<σ≤0.03.

3. The compound of claim 1 , wherein 0<σ≤0.02.

4. The compound of claim 1 , wherein 0<σ≤0.01.

5. The compound of claim 1 , wherein 0.01≤v<0.10.

6. The compound of claim 1 , wherein 0.01≤v<0.05.

7. The compound of claim 1 , wherein 0.01≤v<0.05.

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

9. The compound of claim 1 , wherein an amount of Al is less than or equal to 2000 ppm.

10. The compound of claim 1 , wherein an amount of Al is less than or equal to 1500 ppm.

11. The compound of claim 1 , wherein an amount of Al is less than or equal to 1000 ppm.

Assignees

• Apple Inc

Inventors

• Dai Hongli
• Wu Huiming
• Wang Dapeng

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

• C01G53/50

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

• H01M4/505 Primary

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• C01P2006/11

  Powder tap density · CPC title