Electrical power storage devices

Patent metadata

Field	Value
Publication number	US-2024128467-A1
Application number	US-202318469267-A
Country	US
Kind code	A1
Filing date	Sep 18, 2023
Priority date	Nov 18, 2008
Publication date	Apr 18, 2024
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 the 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 Kg

Inventors

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

Classifications

• H01M4/68 Primary

  for use in lead-acid accumulators · CPC title

• H01G11/24

  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 title

• H01G11/28

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

• H01G11/34

  characterised by carbonisation or activation of carbon · CPC title

• H01G11/36

  Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title