Electrical power storage devices

Patent metadata

Field	Value
Publication number	US-2021098795-A1
Application number	US-202017080226-A
Country	US
Kind code	A1
Filing date	Oct 26, 2020
Priority date	Nov 18, 2008
Publication date	Apr 1, 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 . An electrode comprising:
a charge collector comprising a mat of high surface area fibers; wherein the charge collector is loaded with electrode active material; and wherein the high surface area fibers comprise a carbon selected from the group consisting of graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, and carbon nanotubes.

37 . The electrode of claim 36 , where the high surface area fibers have a cross sectional diameter ranging from about 1 micron to about 100 microns.

38 . The electrode of claim 36 , wherein the fibers are shaped fibers.

39 . The electrode of claim 36 , wherein the fibers are microfibers.

40 . The electrode of claim 36 , wherein the mat is formed of a woven or non-woven mesh in a pattern to adhere and/or support the active material.

41 . The electrode of claim 36 , wherein the high surface area fibers are formed from a polymer.

42 . A lead-acid battery comprising:
a positive electrode and a negative electrode contained within a housing having electrolyte; the negative electrode comprising a mat of high surface area fibers comprising a carbon selected from the group consisting of graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, and carbon nanotubes, wherein the high surface area fibers are loaded with electrode active material.

43 . The battery of claim 42 , further comprising a separator between the positive electrode and the negative electrode.

44 . The battery of claim 42 , wherein the high surface area fibers have a cross sectional diameter ranging from about 1 micron to about 100 microns.

45 . The battery of claim 42 , wherein the fibers are shaped fibers.

46 . The battery of claim 42 , wherein the fibers are microfibers.

47 . The battery of claim 42 , wherein the mat is formed of a woven or non-woven mesh in a pattern to adhere and/or support the active material.

48 . The battery of claim 42 , wherein the high surface area fibers are formed from a polymer.

49 . The electrode of claim 48 , wherein the polymer is selected from the group of polyester, polypropylene, polyethylene, and polyethylene terephthalate.

50 . The battery of claim 42 , wherein the high surface area fibers are configured to help optimize charge acceptance.

Assignees

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

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

• H01M4/74

  Meshes or woven material; Expanded metal · CPC title

• H01G11/40

  Fibres · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title