Electrodes with three dimensional current collectors and methods of making the same

Patent metadata

Field	Value
Publication number	US-9570736-B2
Application number	US-201414516480-A
Country	US
Kind code	B2
Filing date	Oct 16, 2014
Priority date	Oct 16, 2013
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

In some embodiments, the present disclosure pertains to methods of forming electrodes on a surface. In some embodiments, the formed electrodes have a three-dimensional current collector layer. In some embodiments, the present disclosure pertains to the formed electrodes. In some embodiments, the present disclosure pertains to energy storage devices that contain the formed electrodes.

First claim

What is claimed is:

1. A method of forming an electrode on a surface, said method comprising:
(a) applying a first non-solid current collector composition above the surface to form a first current collector layer above the surface;
(b) applying a first non-solid electrode composition above the first current collector layer to form a first electrode layer above the first current collector layer;
(c) applying a second non-solid current collector composition above the first electrode layer to form a three-dimensional current collector layer above the first electrode layer; and
(d) applying a second non-solid electrode composition above the three-dimensional current collector layer to form a second electrode layer above the three-dimensional current collector layer,
wherein the three-dimensional current collector layer surrounds the first current collector layer, the first electrode layer, and the second electrode layer.

2. The method of claim 1 , wherein the three-dimensional current collector layer forms a web or grid around the first current collector layer, the first electrode layer, and the second electrode layer.

3. The method of claim 1 , further comprising one or more compaction steps.

4. The method of claim 3 , wherein the one or more compaction steps occur after applying the first non-solid electrode composition above the first current collector layer, after applying the second non-solid current collector composition above the first electrode layer, after applying the second non-solid electrode composition above the three-dimensional current collector layer, or combinations thereof.

5. The method of claim 1 , wherein one or more of the applying steps are selected from the group consisting of spraying, brushing, rolling, printing, three-dimensional printing and combinations thereof.

6. The method of claim 1 , wherein the three-dimensional current collector layer is formed above the first electrode layer by placing a stencil mask above the first electrode layer prior to applying the second non-solid current collector composition above the first electrode layer.

7. The method of claim 1 , wherein the applying of the second non-solid current collector composition above the first electrode layer to form the three-dimensional current collector layer comprises at least one of webbing, controlled spraying, controlled inkjet printing, controlled screen printing, three-dimensional printing, sputtering, e-beam evaporation, and combinations thereof.

8. The method of claim 1 ,
wherein the first and second non-solid electrode compositions are anode electrode compositions that form anode electrode layers,
wherein the first and second non-solid current collector compositions are anode current collector compositions that form anode current collector layers, and
wherein the method results in the formation of an anode with an embedded three-dimensional current collector layer.

9. The method of claim 8 , wherein the anode current collector compositions are selected from the group consisting of copper, nickel, titanium, and combinations thereof.

10. The method of claim 8 , wherein the anode electrode compositions are selected from the group consisting of graphite, carbon materials, lithium titanium oxide (Li 4 Ti 5 O 12 ), silicon (Si), graphene, molybdenum sulfides, titanium oxide, tin (Sn), tin oxide, nitrides, and combinations thereof.

11. The method of claim 1 ,
wherein the first and second non-solid electrode compositions are cathode electrode compositions that form cathode electrode layers,
wherein the first and second non-solid current collector compositions are cathode current collector compositions that form cathode current collector layers, and
wherein the method results in the formation of a cathode with an embedded three-dimensional current collector layer.

12. The method of claim 11 , wherein the cathode electrode compositions are selected from the group consisting of lithium cobalt oxide (LiCoO 2 ), lithium manganese oxide (LiMn 2 O 4 ), lithium iron phosphate (LiFePO 4 ), vanadium oxide (VO 2 ), lithium nickel manganese cobalt oxide (NMC), lithium nickel cobalt aluminum oxide (NCA), and combinations of thereof.

13. The method of claim 11 , wherein the cathode current collector compositions are selected from the group consisting of aluminum, iron, gold, silver, carbon nanotubes, graphene, conducting polymers, and combinations thereof.

14. The method of claim 1 , wherein at least one of the first or second non-solid current collector compositions are selected from the group consisting of solvents, conductive nanomaterials, surfactants, and combinations thereof.

15. The method of claim 1 , wherein at least one of the first or second non-solid electrode compositions are selected from the group consisting of polymers, solvents, conductive nanomaterials, and combinations thereof.

16. The method of claim 1 , wherein the formed electrode is used as a component of a multilayer energy storage device, wherein the multilayer energy storage device is selected from the group consisting of capacitors, super capacitors, batteries, hybrids thereof, and combinations thereof.

17. The method of claim 16 , wherein the multilayer energy storage device is a lithium ion battery.

18. The method of claim 1 , wherein the surface is selected from the group consisting of glass, fabrics, metals, plastics, ceramics, and combinations thereof.

19. The method of claim 1 , wherein the surface is heated prior to applying the first non-solid current collector composition above the surface.

20. The method of claim 19 , wherein the surface is heated at temperatures between about 50° C. and about 150° C.

21. The method of claim 1 , wherein the first non-solid current collector composition is applied above the surface multiple times to form a plurality of first current collector layers above the surface.

22. The method of claim 1 , wherein the first non-solid electrode composition is applied above the first current collector layer multiple times to form a plurality of first electrode layers above the first current collector layer.

23. The method of claim 1 , wherein the second non-solid current collector composition is applied above the first electrode layer multiple times to form a plurality of three-dimensional current collector layers above the first electrode layer.

24. The method of claim 1 , wherein the second non-solid electrode composition is applied above the three-dimensional current collector layer multiple times to form a plurality of second electrode layers above the three-dimensional current collector layer.

25. The method of claim 1 , wherein steps (b)-(d) are repeated multiple times to form multiple layers.

26. A method of forming an electrode on a surface, wherein the surface serves as a first current collector layer, said method comprising:
(a) applying a first non-solid electrode composition above the surface to form a first electrode layer above the surface;
(b) applying a second non-solid current collector composition above the first electrode layer to form a three-dimensional current collector layer above the first electrode layer; and
(c) applying a second non-solid electrode composition above the three-dimensional current collector layer to form a second electrode layer above the three-dimensional current collector layer,
wherein the three-dimensional current collector layer surrounds the surface, the firs

Assignees

• Univ Rice William M

Inventors

• Galande Charudatta
• Singh Neelam
• Khatiwada Suman
• Ajayan Pulickel M

Classifications

• Y02E60/122

  Cross-Sectional Technologies · mapped topic

• H01G11/28

  arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives · CPC title

• H01G11/86

  specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01M4/70

  characterised by shape or form · CPC title