Porous interconnected corrugated carbon-based network (ICCN) composite

Patent metadata

Field	Value
Publication number	US-11810716-B2
Application number	US-202016791517-A
Country	US
Kind code	B2
Filing date	Feb 14, 2020
Priority date	Nov 18, 2014
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

A porous interconnected corrugated carbon-based network (ICCN) composite and methods for making the same are disclosed. The porous ICCN composite is made up of a plurality of carbon layers that are interconnected and expanded apart from one another to form a plurality of pores. Metallic nanoparticles are disposed within the plurality of pores. In one embodiment, a light exposure only based method for producing the porous ICCN composite is disclosed. In another embodiment a light exposure plus an electrodeposition method for producing the porous ICCN composite is disclosed. In yet another exemplary embodiment, a capacitor having a first electrode and a second electrode separated from the first electrode by a dielectric wherein at least one of the first electrode and the second electrode is formed from the porous ICCN composite is disclosed.

First claim

What is claimed is:

1. An energy storage device comprising:
a) a first electrode;
b) a dielectric;
c) a second electrode separated from the first electrode by the dielectric, wherein at least one of the first electrode and the second electrode is formed from a porous interconnected corrugated carbon-based network (ICCN) composite that comprises:
i) a plurality of carbon layers that are interconnected and expanded apart from one another to form a plurality of pores; and
ii) metallic nanoparticles comprising metallic nanoflowers, wherein the metallic nanoparticles are disposed within the plurality of pores, wherein a percentage of surface area coverage of the metallic nanoparticles on the plurality of carbon layers is at least 15%,

wherein an average minor axis diameter of the plurality of pores is about 75 nanometers to about 550 nanometers.

2. The energy storage device of claim 1 , wherein at least a portion of adjacent carbon layers of the plurality carbon layers is separated by at least 2 nanometers.

3. The energy storage device of claim 1 , wherein at least a portion of the carbon layers of the plurality carbon layers has a thickness of one carbon atom.

4. The energy storage device of claim 1 , wherein the metallic nanoparticles have a nanoflower shape, a nanoflake shape, or both.

5. The energy storage device of claim 1 , wherein the metallic nanoparticles comprise metal oxide particles.

6. The energy storage device of claim 5 , wherein the metal oxide particles are particles of manganese dioxide (MnO 2 ), ruthenium dioxide (RuO 2 ), cobalt oxide (Co 3 O 4 ), nickel oxide (NiO), iron oxide (Fe 2 O 3 ), copper oxide (CuO), molybdenum trioxide (MoO 3 ), vanadium pentoxide (V 2 O 5 ), nickel hydroxide (Ni(OH) 2 ), or any combination thereof.

7. The energy storage device of claim 1 , wherein an electrical conductivity of the plurality of carbon layers is greater than about 0.1 siemens/meter.

8. The energy storage device of claim 1 , wherein a total surface area per unit mass of the plurality of carbon layers is about 1500 square meters per gram to about 1620 meters per gram.

9. The energy storage device of claim 1 , wherein a percentage of surface area coverage of the metallic nanoparticles onto the plurality of carbon layers is at least about 30%.

10. The energy storage device of claim 1 , wherein the energy storage device provides an energy density that is about 2 watt-hours/liter to about 41 watt-hours/liter, a specific capacitance that is about 400 Farads/gram to about 1400 Farads/gram, or both.

11. The energy storage device of claim 1 , wherein the first electrode comprises a plurality of first extending electrode digits and wherein the second electrode comprises a plurality of second extending electrode digits that are interdigitated with the plurality of first extending electrode digits.

12. The energy storage device of claim 1 , wherein the dielectric comprises graphite oxide (GO).

13. The energy storage device of claim 1 , wherein the first electrode and the second electrode are asymmetric.

14. The energy storage device of claim 1 , wherein the first electrode and the second electrode are symmetric.

15. The energy storage device of claim 1 , wherein the energy storage device is a supercapacitor or a micro-supercapacitor.

16. The energy storage device of claim 1 , further comprising an electrolyte deposited in the dielectric.

17. The energy storage device of claim 16 , wherein the electrolyte comprises a gel and an ionic liquid.

18. The energy storage device of claim 16 , wherein the electrolyte comprises fumed silica (FS) nano-powder, polyvinyl alcohol, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, sodium sulfate, or any combination thereof.

19. The energy storage device of claim 16 , wherein the electrolyte is impregnated into a spacer.

20. The energy storage device of claim 1 , wherein a percentage of surface area coverage of the metallic nanoparticles onto the plurality of carbon layers is at least 30%.

21. The energy storage device of claim 1 , wherein a percentage of surface area coverage of the metallic nanoparticles onto the plurality of carbon layers is at least 70%.

22. The energy storage device of claim 1 , wherein a percentage of surface area coverage of the metallic nanoparticles onto the plurality of carbon layers is at least 90%.

Assignees

• Univ California

Inventors

• El-Kady Maher F
• Kaner Richard B
• Hwang Jee Youn

Classifications

• H01G11/36 Primary

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

• C01B32/184 Primary

  Preparation · CPC title

• C01B32/194

  After-treatment · CPC title

• C25D9/08

  by cathodic processes · CPC title

• H01G11/02

  using combined reduction-oxidation reactions, e.g. redox arrangement or solion · CPC title