Nanoplate-nanotube composites, methods for production thereof and products obtained therefrom

Patent metadata

Field	Value
Publication number	US-2017037252-A1
Application number	US-201615299588-A
Country	US
Kind code	A1
Filing date	Oct 21, 2016
Priority date	Jun 23, 2011
Publication date	Feb 9, 2017
Grant date	—

Abstract

Compositions and methods of producing discrete nanotubes and nanoplates and a method for their production. The discrete nanotube/nanoplate compositions are useful in fabricated articles to provide superior mechanical and electrical performance. They are also useful as catalysts and catalyst supports for chemical reactions.

First claim

1 . A composition comprising:
inorganic plates with individual plate thickness of less than 10 nanometers wherein the plates are graphene nanoplates; and discrete multiwall carbon nanotubes having a diameter ranging from about 1 nanometer to 150 nanometers, an oxidation level of from about 1 weight % to about 15 weight %, and wherein the carbon nanotubes have an aspect ratio ranging from about 10 to 500.

2 . The composition of claim 1 , wherein the inorganic plates and discrete tubes are present at a weight ratio of about 1:100 to 100:1.

3 . The composition of claim 1 , wherein the inorganic plates are interspersed with the discrete multiwall carbon nanotubes.

4 . The composition of claim 1 wherein the inorganic plates are oxidized.

5 . The composition of claim 1 , further comprising inorganic materials selected from the group consisting of: ceramics, clays, silicates, metal complexes and salts.

6 . The composition of claim 1 further comprising at least one electroactive material.

7 . The composition of claim 1 further comprising at least one transition metal complex or active catalyst species.

8 . The composition of claim 1 , wherein the carbon nanotubes have an aspect ratio ranging from about 25 to 500.

9 . The composition of claim 7 , further comprising inorganic plates with individual plate thickness of less than 10 nanometers.

10 . The composition of claim 7 , wherein the inorganic plates are graphene nanoplates.

11 . The composition of claim 7 , wherein the inorganic plates and discrete tubes are present at a weight ratio of about 1:100 to 100:1.

12 . A method of preparing graphene carbon nanotube composites, comprising the steps of:
a) suspending non-discrete graphene and non-discrete carbon nanotube fibers in an acidic solution for a time period to form a suspension; b) agitating the suspension; c) sonically treating the suspension of graphene-carbon nanotubes to form graphene-discrete carbon nanotube fibers; and d) isolating the graphene-discrete carbon nanotube fibers from the acidic solution prior to further treatment using solid/liquid separations; wherein the solid/liquid separations comprise filtration.

13 . A method of preparing inorganic plate-carbon nanotube composites, comprising the steps of:
a) suspending non-discrete carbon nanotube fibers in an acidic solution for a time period to form a suspension; b) sonically treating the suspension of carbon nanotubes to form discrete carbon nanotube fibers; c) isolating the discrete carbon nanotube fibers from the acidic solution; d) washing the discrete carbon nanotube fibers with water or another liquid; e) redispersing the discrete carbon nanotube fibers with inorganic plates, optionally with surfactants and sonication; f) optionally adding a polymer; g) optionally adding a transition metal complex; h) optionally adding an electroactive material; i) optionally adding a ceramic; and j) separating the mixture and optionally drying.

14 . The use of the composition of claim 1 in a fabricated article such as a tire, industrial rubber part or wind blade.

15 . The use of the composition of claim 1 in a battery.

16 . The use of the composition of claim 1 in a capacitor.

17 . The use of the composition of claim 1 in a solar cell.

18 . The use of the composition of claim 1 in a powder or liquid mixture used for catalysts or catalyst supports for gas phase reaction.

19 . The use of the composition of claim 1 in a liquid or solid mixture used for catalysts or catalyst supports for solution and slurry phase reactions.

20 . The use of the composition of claim 1 in a concrete mixture used for a foundation, road, or bridge, or in a ceramic mixture used for green-ware to produce ceramic parts.

Assignees

• Molecular Rebar Design Llc

Inventors

• Bosnyak Clive P
• Swogger Kurt W

Classifications

• B01J37/06

  Washing {(B01J37/0009, B01J37/0018 take precedence)} · CPC title

• H01G11/42

  Powders or particles, e.g. composition thereof · CPC title

• C09C1/44 Primary

  Carbon · CPC title

• C04B35/80

  Fibres, filaments, whiskers, platelets, or the like · CPC title

• B01J35/0013

  Operations & Transport · mapped topic