# US 10,865,474 B2 · Thin metal coating methods for high conductivity graphane-metal composites and methods of manufacture

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- Number: US 10,865,474 B2
- Document ID: US10865474B2
- Status: Granted
- Kind: B2
- Application number: 16/259,728
- Filed: 2019-01-28
- Published: 2019-06-06
- Granted: 2020-12-15
- Earliest claimed: 2015-11-20
- Assignees: Fourté International, SDN. BHD
- Applicants: Fourté International, Sdn. Bhd.
- Inventors: James J. Farquhar; Choon Ming Seah
- Web page: https://patentgrep.com/patent/US10865474B2

## CPC

- C23C 16/26: Deposition of carbon only
- B01D 1/00: Evaporating ({evaporation in general, e.g. of liquids for gas phase reactions B01B1/005} ; removal of incrustation B08B; preparation of starch C08B30/00; sugar industry C13; prevention of incrustation C23F; drying solid materials or objects by evaporating liquids therefrom F26)
- B01L 1/00: Enclosures; Chambers (provided with manipulation devices or glove boxes B25J21/00)
- C23C 16/045: {Coating cavities or hollow spaces, e.g. interior of tubes; Infiltration of porous substrates}
- C23C 16/545: {for coating elongated substrates}
- C23C 16/56: After-treatment
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES

## Abstract

Embodiments of the present technology include graphene-metal composites. An example graphene-metal composite includes a porous metal foam substrate, a graphene layer deposited to the porous metal foam substrate, a metal layer applied to the graphene layer, and another graphene layer deposited to the metal layer; the multilayered porous metal foam substrate being compressed to form a graphene-metal composite, and depositing a thin metal coating on an outer surface of the porous metal foam substrate or an outer surface of the graphene using any of physical vapor deposition and chemical vapor deposition.

## Claims

### Claim 1

A graphene-metal composite comprising:
a porous metal foam substrate;
a conductive elastomer introduced into voids of the porous metal foam substrate; and
a graphene layer deposited to the porous metal foam substrate, the porous metal foam substrate and the graphene layer being compressed to form a graphene-metal composite.

### Claim 2 (depends on 1)

The graphene-metal composite according to claim 1, wherein the porous metal foam substrate is nickel or copper foam.

### Claim 3 (depends on 1)

The graphene-metal composite according to claim 1, wherein the porosity of the porous metal foam substrate is at least 70%.

### Claim 4 (depends on 1)

The graphene-metal composite according to claim 1, wherein the graphene layer is deposited to the porous metal foam substrate by chemical vapor deposition.

### Claim 5 (depends on 1)

The graphene-metal composite according to claim 1, wherein the porous metal foam substrate with graphene applied is compressed to substantially close the voids in the porous metal foam substrate and make the compressed porous metal foam substrate with graphene applied thinner than the thickness of the non-compressed porous metal foam substrate.