Cathode material with double-layer particle coating

Patent metadata

Field	Value
Publication number	US-2026094813-A1
Application number	US-202418902829-A
Country	US
Kind code	A1
Filing date	Sep 30, 2024
Priority date	Sep 30, 2024
Publication date	Apr 2, 2026
Grant date	—

Abstract

An electrode is provided. The electrode includes an electrode material comprising a plurality of electrode active material particles. Each of the plurality of electrode active material particles includes a core, a first coating layer formed on a first surface of the core, and a second coating layer formed on a second surface of the first coating layer. The core is formed of a lithium transition metal oxide material. The first coating layer includes a platinum alloy. The second coating layer includes a metal oxide. The present invention also relates to a battery including the electrode material.

First claim

What is claimed is:

1 . An electrode comprising:
an electrode material comprising a plurality of electrode active material particles, each of the plurality of electrode active material particles comprising: a core formed of a lithium transition metal oxide material; a first coating layer formed on a first surface of the core, the first coating layer comprising a platinum alloy; and a second coating layer formed on a second surface of the first coating layer, the second coating layer comprising a metal oxide.

2 . The electrode according to claim 1 , wherein
the lithium transition metal oxide material comprises nickel.

3 . The electrode according to claim 1 , wherein
the lithium transition metal oxide material includes a lithium nickel manganese cobalt oxide.

4 . The electrode according to claim 3 , wherein
the lithium transition metal oxide material has a single crystal structure.

5 . The electrode according to claim 1 , wherein
the core has a size of approximately 2 μm to 20 μm.

6 . The electrode according to claim 1 , wherein
the platinum alloy comprises at least one of nitrogen and sulfur.

7 . The electrode according to claim 1 , wherein
the first coating layer has a thickness of approximately 0.1 nm to 0.5 nm.

8 . The electrode according to claim 1 , wherein
the metal oxide of the second coating layer comprises at least one of aluminum, zirconium, zinc and magnesium.

9 . The electrode according to claim 1 , wherein
the second coating layer has a thickness of approximately 1 nm to 10 nm.

10 . A battery comprising:
an anode comprising an anode material: a cathode comprising a cathode material; and a separator disposed between the anode and the cathode, the cathode material comprising a plurality of cathode active material particles, and each of the plurality of cathode active material particles comprising: a core formed of a lithium transition metal oxide material; a first coating layer formed on a first surface of the core, the first coating layer comprising a platinum alloy; and a second coating layer formed on a second surface of the first coating layer, the second coating layer comprising a metal oxide.

11 . The battery according to claim 10 , wherein
the lithium transition metal oxide material comprises nickel.

12 . The battery according to claim 10 , wherein
the lithium transition metal oxide material includes a lithium nickel manganese cobalt oxide.

13 . The battery according to claim 10 , wherein
the core has a size of approximately 2 μm to 20 μm.

14 . The battery according to claim 10 , wherein
the platinum alloy comprises at least one of nitrogen and sulfur.

15 . The battery according to claim 10 , wherein
the first coating layer has a thickness of approximately 0.1 nm to 0.5 nm.

16 . The battery according to claim 10 , wherein
the metal oxide of the second coating layer comprises at least one of aluminum, zirconium, zinc and magnesium.

17 . The battery according to claim 10 , wherein
the second coating layer has a thickness of approximately 1 nm to 10 nm.

18 . The battery according to claim 10 , wherein
the anode comprises an anode active material selected from the group consisting of: graphite, silicon, a silicon-graphite composite, lithium metal, lithium titanium oxide, graphene, a composite of silicon and graphene oxide, and a lithium metal alloy.

19 . The battery according to claim 10 , further comprising
a liquid electrolyte provided in the separator.

20 . The battery according to claim 10 , wherein
the separator is formed of at least one selected from the group consisting of: polyethylene and polypropylene.

Assignees

• Nissan North America Inc

Inventors

• Gumeci Cenk
• Raman Santhanam
• Patil Sandeep

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/38

  of elements or alloys · CPC title

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title

• H01M4/505

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

• H01M2004/028

  Positive electrodes · CPC title