Method of forming an anode structure with dielectric coating

Patent metadata

Field	Value
Publication number	US-2023275219-A1
Application number	US-202318315240-A
Country	US
Kind code	A1
Filing date	May 10, 2023
Priority date	Jan 9, 2015
Publication date	Aug 31, 2023
Grant date	—

Abstract

The present disclosure generally relate to separators, high performance electrochemical devices, such as, batteries and capacitors, including the aforementioned separators, and methods for fabricating the same. In one implementation, a separator for a battery is provided. The separator comprises a substrate capable of conducting ions and at least one dielectric layer capable of conducting ions. The at least one dielectric layer at least partially covers the substrate and has a thickness of 1 nanometer to 2,000 nanometers.

First claim

1 . An anode electrode structure, comprising:
an anode containing at least one of lithium metal, lithium-alloy, or a mixture of lithium metal and lithium alloy; and at least one dielectric layer capable of conducting ions, wherein the at least one dielectric layer at least partially covers a surface of the anode and has a thickness of 1 nanometer to 2,000 nanometers.

2 . The anode electrode structure of claim 1 , wherein the dielectric layer is a ceramic material.

3 . The anode electrode structure of claim 2 , wherein the ceramic material is a material selected from the group of: porous boron nitride, aluminum oxide, porous aluminum oxide, porous-ZrO 2 , porous-SiO 2 , porous-MgO, porous-TiO 2 , porous-Ta 2 O 5 , porous-Nb 2 O 5 , porous-LiAlO 2 , porous-BaTiO 3 , ion-conducting garnet, ion-conducting perovskites, ion-conducting anti-perovskites, porous glass dielectric, or combinations thereof.

4 . The anode electrode structure of claim 3 , wherein the ceramic material is a porous aluminum oxide.

5 . The anode electrode structure of claim 4 , wherein the porous aluminum oxide further comprises zirconium oxide, silicon oxide, or combinations thereof.

6 . The anode electrode structure of claim 1 , wherein the anode further contains materials selected from the group consisting of: carbon, nickel, copper, tin, indium, silicon, and combinations thereof.

7 . The anode electrode structure of claim 1 , wherein the dielectric layer is a binder-free dielectric layer.

8 . The anode electrode structure of claim 1 , wherein the dielectric layer is a binder-free dielectric layer.

9 . An anode electrode structure, comprising:
an anode containing at least one of lithium metal, lithium-alloy, or a mixture of lithium metal and lithium alloy; and at least one dielectric layer comprising a porous aluminum oxide, wherein the at least one dielectric layer at least partially covers a surface of the anode and has a thickness of 1 nanometer to 2,000 nanometers.

10 . The anode electrode structure of claim 9 , wherein the anode further contains materials selected from the group consisting of: carbon, nickel, copper, tin, indium, silicon, and combinations thereof.

11 . The anode electrode structure of claim 9 , wherein the dielectric layer is a binder-free dielectric layer.

12 . The anode electrode structure of claim 9 , wherein the dielectric layer has a thickness in a range of 1 nanometer to 2,000 nanometers.

13 . The anode electrode structure of claim 9 , wherein the dielectric layer comprises from about 50 wt % to about 100 wt % of aluminum oxide based on the total weight of the dielectric layer.

14 . The anode electrode structure of claim 13 , wherein the dielectric layer comprises from about 75 wt % to about 100 wt % of aluminum oxide based on the total weight of the dielectric layer.

15 . The anode electrode structure of claim 14 , wherein the dielectric layer comprises from about 85 wt % to about 100 wt % of aluminum oxide based on the total weight of the dielectric layer.

16 . The anode electrode structure of claim 9 , wherein the dielectric layer further comprises SiO 2 .

17 . An anode electrode structure, comprising:
an anode containing at least one of lithium metal, lithium-alloy, or a mixture of lithium metal and lithium alloy; and at least one dielectric layer comprising a porous aluminum oxide, wherein the at least one dielectric layer at least partially covers a surface of the anode and has a thickness of 1 nanometer to 2,000 nanometers, wherein the dielectric layer further comprises a plurality of dielectric columnar projections.

18 . The anode electrode structure of claim 17 , wherein the plurality of dielectric columnar projections form a nano-porous structure between the columnar projections of dielectric material.

19 . The anode electrode structure of claim 16 , wherein the nano-porous structure comprises a plurality of nano-pores comprising an average pore size of less than about 10 nanometers.

20 . The anode electrode structure of claim 17 , wherein the nano-porous structure comprises a diameter of about 1 nanometer to about 20 nanometers.

Assignees

• Applied Materials Inc

Inventors

• Herle Subramanya P

Classifications

• H01M50/451

  comprising layers of only organic material and layers containing inorganic material · CPC title

• H01M4/382 Primary

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M4/661

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

• H01M10/0525

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

• H01M4/38 Primary

  of elements or alloys · CPC title