Electrode graphite film and electrode divider ring for an energy storage device

Patent metadata

Field	Value
Publication number	US-10096432-B2
Application number	US-201414208288-A
Country	US
Kind code	B2
Filing date	Mar 13, 2014
Priority date	Mar 14, 2013
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

An energy storage device can have a first graphite film, a second graphite film and an electrode divider ring between the first graphite film and the second graphite film, forming a sealed enclosure. The energy storage device may be compatible with an aqueous electrolyte or a non-aqueous electrolyte. A method of forming an energy storage device can include providing an electrode divider ring, a first graphite film and a second graphite film. The method can include pressing a first edge of the electrode divider ring into a surface of the first graphite film, and pressing a second opposing edge of the electrode divider ring into a surface of the second graphite film to form a sealed enclosure. The sealed enclosure may have as opposing surfaces the surface of the first graphite film and the surface of the second graphite film.

First claim

What is claimed is:

1. An energy storage device, comprising:
a first graphite film;
a second graphite film; and
an electrode divider ring entirely disposed between the first graphite film and the second graphite film, wherein the first graphite film, the second graphite film, and the electrode divider ring form a sealed enclosure,
wherein at least a portion of a first edge of the electrode divider ring extends into the first graphite film and wherein at least a portion of a second opposing edge of the electrode divider ring extends into the second graphite film, such that the electrode divider ring is embedded into the first and second graphite films.

2. The energy storage device of claim 1 , wherein at least one of the first edge and the second opposing edge comprises at least one of a protrusion and a depression.

3. The energy storage device of claim 2 , wherein the at least one protrusion and depression extends along an entire length of an electrode divider ring edge.

4. The energy storage device of claim 1 , further comprising a first electrode film on a surface of the first graphite film facing the electrode divider ring, and a second electrode film on a surface of the second graphite film facing the electrode divider ring.

5. The energy storage device of claim 4 , further comprising a separator between the first electrode film and the second electrode film.

6. The energy storage device of claim 4 , wherein at least one of the first electrode film and the second electrode film further comprises at least one of an activated carbon material, a graphene material, and an oxide material.

7. The energy storage device of claim 1 , further comprising an aqueous electrolyte.

8. The energy storage device of claim 1 , further comprising a non-aqueous electrolyte.

9. The energy storage device of claim 1 , wherein the energy storage device comprises an ultracapacitor.

10. The energy storage device of claim 1 , wherein the energy storage device comprises a battery.

11. An energy storage system, comprising:
a plurality of individual energy storage devices positioned one over the next in a stacked configuration,
wherein at least one of the plurality of individual energy storage devices comprises:
a first graphite film;
a second graphite film; and
an electrode divider ring entirely disposed between the first graphite film and the second graphite film, wherein the first graphite film, the second graphite film, and the electrode divider ring form a sealed enclosure, and

wherein at least a portion of a first edge of the electrode divider ring extends into the first graphite film and wherein at least a portion of a second opposing edge of the electrode divider ring extends into the second graphite film, such that the electrode divider ring is embedded into the first and second graphite films.

12. The energy storage system of claim 11 , wherein the second graphite film of the at least one of the plurality of individual energy storage devices is adjacent a first graphite film of an adjacent individual energy storage device, and wherein the adjacent first graphite film and second graphite film are electrically coupled to couple the adjacent individual energy storage devices in electrical series.

13. The energy storage system of claim 12 , wherein the adjacent first graphite film and second graphite film are in direct contact with one another.

14. The energy storage system of claim 11 , further comprising a first electrically conductive component coupled to a top of the stack of plurality of individual energy storage devices at a first graphite film of a first individual energy storage device, and a second electrically conductive component coupled to the bottom of the stack of plurality of individual energy storage devices at a second graphite film of a last individual energy storage device.

15. The energy storage system of claim 11 , wherein the at least one of the plurality of individual energy storage devices comprises an ultracapacitor.

16. The energy storage system of claim 11 , wherein the at least one of the plurality of individual energy storage devices comprises a battery.

Assignees

• Maxwell Lab

Inventors

• Mitchell Porter
• Dougherty Thomas J

Classifications

• H01G11/28

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

• Y10T29/49115

  including coating or impregnating · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M4/133

  Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01M12/005

  Electricity · mapped topic