Physically Functionalized Graphene Hybrid Composite (GHC) and its Applications

• US 20150099214A1
• Filed: 10/07/2013
• Published: 04/09/2015
• Est. Priority Date: 11/07/2011
• Status: Active Grant

• Current Assignee: K Tube Technology, LLC
• Original Assignee: Dhkgraphenologies LLC
• Inventors: Khe, Nguyen C., Dinh, Hieu, Dinh, Dien
• Granted Patent: US 9,460,827 B2
• Time in Patent Office: Days
• US Class Current: 429/523
• CPC Class Codes: H01B 1/04 mainly consisting of carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H01B 1/08 oxides
• CPC Class Codes: H01B 1/18 the conductive material comprising carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 4/625 Carbon or graphite
• CPC Class Codes: H01M 4/626 Metals
• CPC Class Codes: H01M 4/96 Carbon-based electrodes
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y10T 428/268 Monolayer with structurally defined element
• CPC Class Codes: Y10T 428/2982 Particulate matter [e.g., sphere, flake, etc.]

Abstract

Certain exemplary embodiments can provide a graphene hybrid composite (GHC). The GHC can be formed between specific nano carbon materials and graphene generated via pyrolysis of solid carbon sources. A Raman spectrum of the GHC can show a major 2D band at approximately 2650 cm⁻¹, a minor D and G band at approximately 1350 cm⁻¹ and approximately 1575 cm⁻¹, and an intensity ratio of 2D band over D band and G band greater than 1.

Claims

1. An electrically conductive element comprising:

a physically functionalized graphene hybrid composite (GHC), wherein said physically functionalized GHC;

is a powder comprising particles having average diameter less than 10 nanometers; and

when analyzed via Raman spectroscopy;

shows a major 2D band at approximately 2650 cm<sup>−

1</sup>;

shows a minor D and G band at approximately 1350 cm<sup>−

1</sup> and approximately 1575 cm<sup>−

1</sup>; and

shows an intensity ratio of 2D band over D band and G band greater than 1.

2. The electrically conductive element of claim 1, wherein:

said physically functionalized GHC is a formed composite of more than one kind of graphitic carbons comprising carbon nano-tube, graphite, graphene, graphene oxide, amorphous carbon created via pyrolysis of a combination of solid carbon sources with specific additives under unoxidizing environment.

3. The electrically conductive element of claim 1, wherein:

a reactor forming said physically functionalized GHC generates free radicals via at least one of a carbon generator, waste gas exhaustion mechanism, or reaction precursor agitation mechanism.

4. The electrically conductive element of claim 1, wherein:

a carbon generator generates free radicals utilizing a heating element comprising at least one of an infra-red heater, plasma heater, or resistor heater.

5. The electrically conductive element of claim 1, wherein:

a reactor manufacturing said physically functionalized GHC is at least one of a vertical, horizontal, round bottom flask, or irregular shape.

6. The electrically conductive element of claim 1, wherein:

said physically functionalized GHC is used with a specific chemical reagent to enhance electrically conductivity as well as chemical and mechanical stability;

wherein said specific chemical reagent is a reduction agent;

wherein said reduction agent comprises at least one of a metal hydride, NaBH₄, hydrazine, NaOH, KOH, Na₂SiO₃, sodium, or potassium.

7. The electrically conductive element of claim 1, wherein:

said electrical conductive element comprises at least one of a binder, electrical conductive nano materials comprising nano metals, nano wire, nano rod of metals and semiconductors, nano graphitic carbons comprising fullerene, diamond, carbon nano tube, graphene, or graphite.

8. The electrically conductive element of claim 1, wherein:

said electrical conductive element comprises a binder, wherein said binder is a polymeric binder, glass binder, ceramic binder, or metallic binder.

9. The electrically conductive element of claim 1, wherein:

said electrical conductive element comprises a binder, wherein said binder is a polymeric binder comprises at least one of an electrical conductive polymer, non-conducting polymer, thermoset polymer, crosslinking polymer, emulsion polymer, electrolyte or electrolytic polymer, water soluble polymer, or a poly amino acid.

10. The electrically conductive element of claim 1, wherein:

said electrical conductive element comprises a binder, wherein said binder comprises at least one of SiO₂, TiO₂, ZnO, MnO, Mn₂O₃, Mn₃O₄, Al₂O₃, or KCl.

11. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by a substantially transparent conductor.

12. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by a conductive ink, lacquer, or adhesive.

13. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by a highly conductive thin film for large dimension applications such as replacing thin film prepared by vacuum technique for cost reduction.

14. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by a conducting powder for energy storage, nano cable, or super capacitor.

15. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by an energy conversion system or a solar cell.

16. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by an electro catalyst.

17. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by a biomedical system.

18. The electrically conductive element of claim 1, wherein:

said electrical conductive element and physically functionalized GHC is comprised by a power generator for a vehicle, said vehicle comprising a lithium battery.

19. The electrically conductive element of claim 1, wherein:

said electrical conductive element is comprised by a mechanical strength enhancement composite, an electro conductive ceramic composite, or an alloy between said physically functionalized GHC with nano metals.

20. The electrically conductive element of claim 1, wherein:

said physically functionalized GHC is combined with a specific chemical agent in a high mechanical strength electrical conductive element.

21. The electrically conductive element of claim 1, wherein:

said physically functionalized GHC is combined with a specific chemical agent and at least one of binder, reinforced materials comprising ceramic, aerogel, organo clays in a high mechanical strength electrical conductive element.