Oxide mixture and complex oxide coatings for cathode materials

Patent metadata

Field	Value
Publication number	US-2023275218-A1
Application number	US-202318312474-A
Country	US
Kind code	A1
Filing date	May 4, 2023
Priority date	Aug 2, 2018
Publication date	Aug 31, 2023
Grant date	—

Abstract

Cathode active materials are provided. The cathode active material can include a plurality of cathode active compound particles. A coating is disposed over each of the cathode active compound particles. The coating can include at least one of ZrO2, La2O3, a mixture of Al2O3 and ZrO2 or a mixture of Al2O3 and La2O3. The battery cells that include the cathode active material are also provided.

First claim

1 - 17 . (canceled)

18 . A cathode active material comprising:
a plurality of cathode active compound particles; and a coating disposed over each of the cathode active compound particles, the coating comprising a Zn and Al-containing oxide.

19 . The coated cathode active material of claim 18 , wherein the oxide comprises ZnAl 2 O 4 .

20 . The cathode active material of claim 18 , wherein the cathode active compound particles comprise a compound of Formula (IXb):
(ν)[Li 2 M 7 O 3 ]·(1−ν)[Li α Co 1−σ M 8 σ O 2 ]  (IXb)

wherein
M 7 is selected from Mn, Ti, Zr, and Ru;
M 8 is selected from B, Na, Mg, Ti, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Ru, and Mo;
0.95≤α≤1.05;
0.01≤ν≤0.10; and
0≤α≤0.05.

21 . The cathode active material of claim 20 , wherein 0.95≤α<0.99.

22 . The cathode active material of claim 20 , wherein the cathode active compound particles comprise a compound of Formula (X):
Li α Co 1−x−y M y Mn x O δ   (X)

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≤1.05;
0<x≤0.30;
0≤y≤0.10; and
1.98≤δ≤2.04.

23 . The cathode active material of claim 22 , wherein 0.95≤α<0.99.

24 . A battery cell, comprising:
an anode comprising an anode current collector, the cathode comprising the coated cathode active material according to claim 18 ; and a separator disposed between the anode and the cathode.

Assignees

• Apple Inc

Inventors

• Wang Dapeng
• Wu Huiming
• Dai Hongli
• Wang Xiaoping
• Gilbert James
• Carter John David
• Yang Zhenzhen
• Vu Anh
• Li Yan
• Cui Yanjie
• Johnson Christopher S
• Kropf Arthur Jeremy
• Iddir Hakim H

Classifications

• H01M4/366 Primary

  as layered products · CPC title

• 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

• H01M4/505

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

• H01M10/0525

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

• C01G51/50

  of the type (MnO2)n-, e.g. Li(CoxMn1-x)O2 or Li(MyCoxMn1-x-y)O2 · CPC title