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

Patent metadata

Field	Value
Publication number	US-10818441-B2
Application number	US-201816153484-A
Country	US
Kind code	B2
Filing date	Oct 5, 2018
Priority date	Mar 14, 2013
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

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. A method of fabricating an energy storage device, comprising:
providing an electrode divider ring, a first graphite film and a second graphite film;
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 having as opposing surfaces the surface of the first graphite film and the surface of the second graphite film.

2. The method of claim 1 , further comprising attaching a first electrode film onto the surface of the first graphite film and attaching a second electrode film onto the surface of the second graphite film.

3. The method of claim 2 , further comprising impregnating the first electrode film and the second electrode film prior to pressing the second opposing edge of the electrode divider ring into the surface of the second graphite film to form the sealed enclosure.

4. The method of claim 2 , further comprising placing a separator over the first electrode film within the electrode divider ring.

5. The method of claim 4 , further comprising impregnating the separator with an electrolyte prior to placing the separator over the first electrode film.

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

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

Assignees

• Maxwell Lab

Inventors

• Mitchell Porter
• Dougherty Thomas J

Classifications

• Y02P70/50

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

• Y10T29/4911

  including sealing · CPC title

• Y10T29/49108

  Electric battery cell making · CPC title

• H01G11/36 Primary

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

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title