Three-dimensional deterministic graphene architectures formed using three-dimensional templates

Patent metadata

Field	Value
Publication number	US-2018208467-A1
Application number	US-201715417134-A
Country	US
Kind code	A1
Filing date	Jan 26, 2017
Priority date	Jan 26, 2017
Publication date	Jul 26, 2018
Grant date	—

Abstract

In one embodiment, a composition of matter includes: a plurality of ligaments each independently comprising one or more layers of graphene; where the plurality of ligaments are arranged according to a deterministic three-dimensional (3D) pattern. In another embodiment, a method of forming a deterministic three-dimensional (3D) architecture of graphene includes: forming or providing a substrate structurally characterized by a predefined 3D pattern; forming one or more layers of metal on surfaces of the substrate; and forming one or more layers of graphene on surfaces of the metal.

First claim

What is claimed is:

1 . A composition of matter, comprising:
a plurality of ligaments each independently comprising one or more layers of graphene; and wherein the plurality of ligaments are arranged according to a deterministic three-dimensional (3D) pattern.

2 . The composition of matter as recited in claim 1 , wherein at least portions of the plurality of ligaments independently consist of a single layer of graphene.

3 . The composition of matter as recited in claim 2 , wherein the portions of the plurality of ligaments independently consisting of a single layer of graphene are characterized by sp 2 hybridization.

4 . The composition of matter as recited in claim 1 , wherein the plurality of ligaments are coupled to a metal substrate.

5 . The composition of matter as recited in claim 4 , wherein the metal substrate is coupled to a 3D-printed substrate; and
wherein the 3D-printed substrate structurally defines the deterministic 3D pattern.

6 . The composition of matter as recited in claim 5 , wherein the metal substrate comprises one or more metals selected from nickel and copper, wherein the one or more metals are electrolessly plated onto surfaces of the 3D-printed substrate.

7 . The composition of matter as recited in claim 5 , wherein the 3D-printed substrate comprises at least one polymer.

8 . The composition of matter as recited in claim 1 , wherein the deterministic 3D pattern is ordered.

9 . The composition of matter as recited in claim 1 , wherein the deterministic 3D pattern is characterized by features each independently having a feature size in a range from about 100 nm to about 1 um.

10 . The composition of matter as recited in claim 1 , wherein at least portions of the ligaments are hollow.

11 . The composition of matter as recited in claim 10 , wherein at least some of the hollow portions of the ligaments are fully enclosed structures.

12 . The composition of matter as recited in claim 1 , wherein at least portions of the ligaments independently comprise a pair of concentric, hollow bilayers.

13 . The composition of matter as recited in claim 1 , wherein at least portions of the 3D pattern exhibit a gradient in density along at least one axis thereof.

14 . A method of forming a three-dimensional (3D) architecture of graphene, comprising:
forming or providing a substrate structurally characterized by a deterministic 3D pattern; forming one or more layers of metal on surfaces of the substrate; and forming one or more layers of graphene on surfaces of the metal.

15 . The method as recited in claim 14 , comprising:
removing the one or more layers of metal from the 3D architecture of graphene; and removing the substrate from the 3D architecture of graphene; and wherein removing the one or more layers of metal and removing the substrate reveals a plurality of ligaments each independently comprising one or more of the layers of graphene, the ligaments being arranged according to the deterministic 3D pattern.

16 . The method as recited in claim 15 , comprising supercritically drying or freeze drying the plurality of ligaments.

17 . The method as recited in claim 14 , wherein the one or more layers of metal include internal surfaces facing the substrate and external surfaces facing away from the substrate; and
wherein the surfaces of the metal on which the one or more layers of graphene are formed include at least some of the internal surfaces and at least some of the external surfaces.

18 . The method as recited in claim 14 , comprising forming the substrate, wherein forming the substrate comprises a 3D printing process selected from: direct ink writing (DIW), direct laser writing (DLW), projection microstereolithography (PμSL), and two-photon polymerization direct laser writing (2PP DLW).

19 . The method as recited in claim 14 , wherein forming the one or more layers of graphene on the surfaces of the metal comprises decomposing the substrate via catalysis by the metal, wherein the substrate comprises a polymer that decomposes into graphene or amorphous carbon.

20 . The method as recited in claim 19 , wherein the decomposition comprises pyrolysis at a temperature in a range from about 400° C. to about 1200° C.

Assignees

• L Livermore Nat Security Llc

Inventors

• Ye Jianchao
• Biener Juergen
• Campbell Patrick
• Chen Wen
• Jackson Julie A
• Moran Bryan D
• Oakdale James
• Smith William
• Spadaccini Christopher
• Worsley Marcus A
• Zheng Xiaoyu

Classifications

• C01P2004/03

  obtained by SEM · CPC title

• C01B32/186

  by chemical vapour deposition [CVD] · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• Y10S977/734

  Fullerenes, i.e. graphene-based structures, such as nanohorns, nanococoons, nanoscrolls or fullerene-like structures, e.g. WS2 or MoS2 chalcogenide nanotubes, planar C3N4, etc. · CPC title

• C01B32/182 Primary

  Graphene · CPC title