Electrical power storage devices

Patent metadata

Field	Value
Publication number	US-2021057756-A1
Application number	US-202017080270-A
Country	US
Kind code	A1
Filing date	Oct 26, 2020
Priority date	Nov 18, 2008
Publication date	Feb 25, 2021
Grant date	—

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.

First claim

1 - 35 . (canceled)

36 . A lead-acid battery comprising:
a positive electrode, a negative electrode, and a separator between die positive electrode and the negative electrode; and a carbon additive comprising fibers comprising a graphite, wherein the positive electrode, negative electrode, the separator and the additive are contained within a housing having electrolyte.

37 . The lead-acid battery of claim 36 , wherein the carbon additive comprises a combination of carbons at least one of which is said graphite.

38 . The battery of claim 37 , wherein the carbon additive comprises a combination of carbons including said graphite and a carbon layer.

39 . The battery of claim 36 , wherein the carbon additive comprises high surface area graphite fibers.

40 . The battery of claim 36 , wherein the high surface area carbon additive is expanded graphite.

41 . The battery of claim 36 , wherein the carbon additive is provided in electrode active material.

42 . The lead-acid battery of claim 41 , wherein the carbon additive is provided in negative electrode active material.

43 . The battery of claim 36 , wherein the carbon additive fibers have a cross sectional diameter ranging from about 1 micron to about 100 microns.

44 . The battery of claim 36 , wherein the carbon additive fibers are configured to help optimize charge acceptance.

45 . The battery of claim 36 , wherein the carbon additive is porous.

46 . A lead-acid battery comprising:
a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode; the positive electrode, negative electrode, and separator contained within a housing having electrolyte; and a conductive additive comprising fibers having a conductive core and a surface formed of a different material.

47 . The battery of claim 46 , wherein the conductive core comprises a graphite.

48 . The battery of claim 46 , wherein the conductive additive is porous.

49 . The battery of claim 46 , wherein the fibers have a cross sectional diameter ranging from about 1 micron to about 100 microns.

50 . The battery of claim 46 , wherein the fibers are configured to help optimize charge acceptance.

Assignees

• Cps Tech Holdings Llc
• Clarios Germany Gmbh & Co Kgm

Inventors

• Sturgeon Richard M
• Wetzel Dennis A
• Gruenstern Robert G
• Wruck William J
• Subbarraman Ramachadran
• Symanski James
• Meissner Eberhard

Classifications

• H01M4/625

  Carbon or graphite · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M4/74

  Meshes or woven material; Expanded metal · CPC title

• H01G11/40

  Fibres · CPC title