Graphene shell and process of preparing the same

Patent metadata

Field	Value
Publication number	US-9902619-B2
Application number	US-201414246364-A
Country	US
Kind code	B2
Filing date	Apr 7, 2014
Priority date	Sep 12, 2007
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

Provided is a process for economically preparing a graphene shell having a desired configuration which is applicable in various fields wherein in the process the thickness of the graphene shell can be controlled, and a graphene shell prepared by the process.

First claim

What is claimed is:

1. A plurality of graphene shells consisting of: graphene shells having a wall thickness of 0.1 nanometer to 7 nanometers, and
wherein the graphene shells of the plurality are non-concentric.

2. The plurality of graphene shells of claim 1 , wherein the graphene shells have a cylindrical shape and have a diameter of greater than about 1 micrometer.

3. A plurality of graphene shells consisting of:
graphene shells which consist of a plurality of carbon atoms which are covalently bound to each other, and
wherein the graphene shell of the plurality of graphene shells has a wall thickness of 0.1 nanometer to 7 nanometers, and
wherein the graphene shells of the plurality are non-concentric.

4. The plurality of graphene shells of claim 3 , wherein the graphene shell has a cylindrical shape and has a diameter of greater than about 1 micrometer.

5. A plurality of graphene shells consisting of:
graphene shells which consist of a plurality of carbon atoms which are covalently bound to each other, wherein the graphene shells have a cylindrical configuration with a diameter greater than about 1 micrometer, and
wherein the graphene shells of the plurality are non-concentric.

6. A plurality of graphene core-shell assemblies consisting of:
a plurality of three-dimensional bodies each comprising at least one selected from the group consisting of a graphitizing catalyst and a core; and
a graphene shell formed on a surface of the three-dimensional bodies,
wherein the graphene shell has a wall thickness of 0.1 nanometer to 7 nanometers, and
wherein the core comprises a metal oxide.

7. The plurality of graphene core-shell assemblies of claim 6 , wherein the three-dimensional body comprises a core and a graphitizing catalyst shell.

8. The plurality of graphene core-shell assemblies of claim 6 , wherein the graphene shell has a cylindrical shape and has a diameter of greater than about 1 micrometer.

9. A plurality of graphene core-shell assemblies consisting of:
a plurality of three-dimensional bodies each comprising a graphitizing catalyst on a surface of a core; and
a graphene shell on a surface of a three-dimensional body of the plurality of three-dimensional bodies,
wherein the graphene shell has a wall thickness of 0.1 nanometer to 7 nanometers.

10. The plurality of graphene core-shell assemblies of claim 9 , wherein the core comprises a metal oxide.

11. The plurality of graphene core-shell assemblies of claim 9 , wherein the graphitizing catalyst comprises a metal.

12. The plurality of graphene core-shell assemblies of claim 11 , wherein the metal of the graphitizing catalyst is selected from Ni, Co, Fe, Pt, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, and Zr.

13. The plurality of graphene core-shell assemblies of claim 9 , wherein the graphene shell has a cylindrical shape and has a diameter of greater than about 1 micrometer.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choi Jae Young
• Shin Hyeon Jin
• Yoon Seon Mi

Classifications

• C01B2204/02

  Single layer graphene · CPC title

• C01B2204/04

  Specific amount of layers or specific thickness · CPC title

• G02B6/032

  with non solid core or cladding {(G02B6/02295 takes precedence)} · CPC title

• Y02E60/328

  Cross-Sectional Technologies · mapped topic

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title