High-voltage devices

Patent metadata

Field	Value
Publication number	US-10892109-B2
Application number	US-201916692123-A
Country	US
Kind code	B2
Filing date	Nov 22, 2019
Priority date	Jan 22, 2016
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

The present disclosure provides supercapacitors that may avoid the shortcomings of current energy storage technology. Provided herein are supercapacitor devices, and methods of fabrication thereof comprising the manufacture or synthesis of an active material on a current collector and/or the manufacture of supercapacitor electrodes to form planar and stacked arrays of supercapacitor electrodes and devices. Prototype supercapacitors disclosed herein may exhibit improved performance compared to commercial supercapacitors. Additionally, the present disclosure provides a simple, yet versatile technique for the fabrication of supercapacitors through masking and etching.

First claim

What is claimed is:

1. An energy storage device comprising:
an array of electrodes, wherein each electrode comprises:
a current collector; and
an active material directly on a portion of a first surface of the current collector,

wherein the active material comprises two or more expanded and interconnected carbon layers, wherein at least one of the carbon layers is corrugated and one atom thick, and wherein a portion of the carbon layers is separated by a distance of about 25 nm to about 150 nm.

2. The energy storage device of claim 1 , further comprising the active material directly on a portion of a second surface of the current collector.

3. The energy storage device of claim 1 , wherein each electrode in the array of electrodes is separated from a subsequent electrode by a gap.

4. The energy storage device of claim 1 , wherein the current collector comprises a metal film, a polymeric film, or any combination thereof, wherein the metal film comprises silver, copper, gold, aluminum, calcium, tungsten, zinc, brass, bronze, nickel, lithium, iron, platinum, tin, carbon steel, lead, titanium, stainless steel, mercury, chromium, gallium arsenide, or any combination thereof, and wherein the polymeric film comprises polyfluorene, polyphenylene, polypyrene, polyazulene, polynaphthalene, polyacetylene, poly p-phenylene vinylene, polypyrrole, polycarbazole, polyindole, polyazepinem, polyaniline, polythiophene, poly 3,4-ethylenedioxythiophene, poly p-phenylene sulfide, polyacetylene, or any combination thereof.

5. The energy storage device of claim 1 , wherein the active material comprises carbon, activated carbon, graphene, polyaniline, polythiophene, an interconnected corrugated carbon-based network (ICCN), or any combination thereof.

6. The energy storage device of claim 1 , wherein the active material has a specific surface area of from about 250 meters squared per gram to about 3,500 meters squared per gram.

7. The energy storage device of claim 1 , wherein the active material has a conductivity of from about 750 siemens/meter to about 3,000 siemens/meter.

8. The energy storage device of claim 1 , wherein the active material has a surface density of at least about 250 m 2 /g.

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

10. The energy storage device of claim 9 , wherein the electrolyte is a liquid, a solid, a gel, or any combination thereof.

11. The energy storage device of claim 9 , wherein the electrolyte comprises a polymer, silica, fumed silica, fumed silica nano-powder, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, phosphoric acid, tetraethyl ammonium tetrafluoroborate (TEABF 4 ), acetonitrile, 1-ethyl-3-methylimidazoliumtetrafluoroborate, ethanolammonium nitrate, a dicarboxylate, a prostaglandin, adenosine monophosphate, guanosine monophosphate, a p-aminohippurate, polysiloxane, polyphosphazene, potassium hydroxide, polyvinyl alcohol, or any combination thereof.

12. The energy storage device of claim 9 , wherein the number of electrodes is 5, provided that a voltage potential produced across the array of electrodes is from 6 V to 24 V.

13. The energy storage device of claim 9 , wherein the number of electrodes is 72, provided that a voltage potential produced across the array of electrodes is from 100 V to 360 V.

14. The energy storage device of claim 9 , wherein the number of electrodes is 180, provided that a voltage potential produced across the array of electrodes is from 100 V to 360 V.

15. The energy storage device of claim 1 , wherein the array of electrodes is a two-dimensional planar array of electrodes.

16. The energy storage device of claim 1 , wherein the array of electrodes is a stacked array of electrodes.

17. The energy storage device of claim 16 , further comprising at least one or more of a separator and a support between a pair of adjacent electrodes.

18. The energy storage device of claim 1 , wherein each electrode is a double-sided electrode.

19. The energy storage device of claim 1 , wherein each electrode is a single-sided electrode.

20. The energy storage device of claim 3 , wherein a width of the gap is at least about 10 μm.

Assignees

• Univ California

Inventors

• Kaner Richard Barry
• El-Kady Maher F

Classifications

• H01G11/86

  specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title

• H01G11/70

  characterised by their structure · CPC title

• H01G11/68 Primary

  characterised by their material · CPC title

• H01G11/60 Primary

  characterised by the solvent · CPC title

• H01G11/30

  characterised by their material · CPC title