ELECTRICAL POWER STORAGE DEVICES

• US 20110311876A1
• Filed: 11/18/2009
• Published: 12/22/2011
• Est. Priority Date: 11/18/2008
• Status: Active Grant

• Current Assignee: CPS Technology Holdings, LLC
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: Wetzel, Dennis A., Wruck, William J., Sturgeon, Richard M., Gruenstern, Robert G.
• Granted Patent: US 9,525,177 B2
• Time in Patent Office: Days
• US Class Current: 429/232
• CPC Class Codes: H01G 11/24 characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
• CPC Class Codes: H01G 11/28 arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
• CPC Class Codes: H01G 11/34 characterised by carbonisation or activation of carbon
• CPC Class Codes: H01G 11/36 Nanostructures, e.g. nanofibres, nanotubes or fullerenes
• CPC Class Codes: H01G 11/40 Fibres
• CPC Class Codes: H01M 10/12 Construction or manufacture
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 4/625 Carbon or graphite
• CPC Class Codes: H01M 4/663 containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
• CPC Class Codes: H01M 4/667 in the form of layers, e.g. coatings
• CPC Class Codes: H01M 4/668 Composites of electroconductive material and synthetic resins
• CPC Class Codes: H01M 4/68 for use in lead-acid accumulators
• CPC Class Codes: H01M 4/73 for lead-acid accumulators, e.g. frame plates
• CPC Class Codes: H01M 4/74 Meshes or woven material; Expanded metal
• CPC Class Codes: H01M 50/44 Fibrous material
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

An electrical storage device includes high surface area fibers (e.g., shaped fibers and/or microfibers) coated with carbon (graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, CNT, or graphite coated CNT), electrolyte, and/or electrode active material (e.g., lead oxide) in electrodes. The electrodes are used to form electrical storage devices such as electrochemical batteries, electrochemical double layer capacitors, and asymmetrical capacitors.

Claims

1. A power storage device, comprising:

at least one positive electrode;

at least one negative electrode; and

at least one separator separating a positive electrode from a negative electrode;

wherein at least one of the at least one negative electrode or at least one positive electrode includes high surface area fibers.

2. The power storage device of claim 1 wherein the high surface area fiber is a shaped fiber.

3. The power storage device of claim 1 wherein the high surface area fiber is a microfiber.

4. The power storage device of claim 1 wherein the at least one negative electrode includes high surface area fibers.

5. The power storage device of claim 1 wherein the at least one positive electrode includes high surface area fibers.

6. The power storage device of claim 1 wherein the high surface area fibers are coated with a carbon additive.

7. The power storage device of claim 1 wherein the at least one negative electrode includes high surface area fibers coated with a carbon additive.

8. The power storage device of claim 6 wherein the carbon additive comprises at least one of graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, or carbon nanotubes.

9. The power storage device of claim 6 wherein the high surface area fibers are shaped fibers.

10. The power storage device of claim 1 wherein the high surface area fibers are formed into a mat.

11. The power storage device of claims 1 wherein the high surface area fibers are electrical conductors.

12. The power storage device of claim 1 wherein the high surface area fibers are electrical insulators.

13. The power storage device of claim 1 wherein the high surface area fibers are coated in electrode active material.

14. An electrode, comprising:

a charge collector grid;

electrode active material coated on the charge collector grid; and

high surface area fibers.

15. The electrode of claim 14 wherein the high surface area fiber is a shaped fiber.

16. The electrode of claim 14 wherein the high surface area fiber is a microfiber.

17. The electrode of claim 14 wherein the high surface area fibers are coated with a carbon additive.

18. The electrode of claim 14 wherein the electrode is a positive electrode.

19. The electrode of claim 14 wherein the electrode is a negative electrode.

20. The electrode of claim 17 wherein the carbon additive comprises at least one of graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, or carbon nanotubes.

21. The electrode of claim 17 wherein the high surface area fibers are shaped fibers.

22. The electrode of claim 14 wherein the high surface area fibers are formed into a mat.

23. The electrode of claim 14 wherein the high surface area fibers are electrical conductors.

24. The electrode of claim 14 wherein the high surface area fibers are electrical insulators.

25. The electrode of claim 14 wherein the high surface area fibers are coated in electrode active material.

26. An electrode, comprising:

a charge collector comprising a mat of high surface area fibers; and

electrode active material coated on the mat.

27. The electrode of claim 26 wherein the high surface area fiber is a shaped fiber.

28. The electrode of claim 26 wherein the high surface area fiber is a microfiber.

29. The electrode of claim 26 wherein the high surface area fibers are coated with a carbon additive.

30. The electrode of claim 26 wherein the electrode is a positive electrode.

31. The electrode of claim 26 wherein the electrode is a negative electrode.

32. The electrode of claim 26 further comprising a carbon additive coated on the high surface area fibers.

33. The electrode of claim 32 wherein the carbon additive comprises at least one of graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, or carbon nanotubes.

34. The electrode of claim 32 wherein the high surface area fibers are shaped fibers.

35. The electrode of claim 26 wherein the high surface area fibers are formed into a mat.