Patent
US 9,695,048GRAPHENE PRODUCTION
Seth Adrian Miller
US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for producing graphene, the method comprising: receiving a first solution in a chamber including an inlet and an outlet, wherein the outlet is pitched with respect to the inlet, and wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region, and moving the first and second solutions towards the outlet of the chamber by at least one of a pressure differential in the chamber or a gravitational force in the chamber.
The method as recited in of claim 1, wherein: the second solution includes the graphene oxide dispersed in water; and the first solution is immiscible with the water.
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in a liquid, wherein the liquid comprises water, a polar organic solvent, N,N-dimethylformamide (DMF), N-methyl-2-pyrrolidone (NMP), tetrahydrofuran (THF), ethylene glycol (EG), propylene carbonate, and/or combinations or mixtures thereof. 8 S/N 14/820,184
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in water with a concentration of the graphene oxide to the water in a range of about O.lg/liter to about lg/liter.
The method as recited in of claim 1, wherein the second solution includes one or more of a surfactant, the graphene oxide in a non-aqueous medium, the graphene oxide in dimethylformamide, the graphene oxide dispersed in an organic solvent, and/or the graphene oxide dispersed in chloroform.
The method as recited in of claim 1, wherein the first solution or the second solution includes a viscosity enhancer.
The method as recited in of claim 1, wherein the first solution or the second solution includes a water soluble polymer.
The method as recited in of claim 1, wherein the first solution or the second solution includes at least one of dextrose, polyethylene oxide, and/or polyvinyl alcohol.
The method as recited in of claim 1, wherein the reducing agent in the first solution includes at least one of hydrazine, alkyl hydrazine, toluene, dichloromethane, an alkyl borane, 9-Borabicyclo(3.3.1)nonane, a hydroquinone, and/or a borohydride.
The method as recited in of claim 1, wherein the reducing agent is one of chloroform, ethyl ether, ethyl acetate, toluene, hexane, and/or dichloromethane, or combinations thereof.
The method as recited in of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt, wherein the support is one of a plastic, a polymer, a fluorocarbon, or a metal.
The method of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt; and rolling the graphene and the support onto a spool.
11-12.. canceled
9 S/N 14/820,184 canceled
A method for producing processed graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce the processed graphene.
The method of claim 15, wherein the third solution includes de-ionized water, water plus organic materials, and isopropyl alcohol. 10 S/N 14/820,184
The method of claim 15, wherein the heating of the washed graphene is at a temperature of about 15 degrees Celsius to about 30 degrees Celsius for a time period of about 3 minutes to about 20 minutes.
A method for producing graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; drawing the graphene out of the first chamber on to a support with a conveyer belt; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce processed graphene; and rolling the processed graphene and the support onto a spool.
The method as recited in of c laim 18, wherein: the second solution includes t he graphene oxide dispersed in water; and the first solution is immiscible with the water.
Layer stacks claimed or described, ordered top of device to substrate.
graphene production system
No layer stack recorded.
Materials described outside the worked examples.
graphene oxide
graphene
reducing agent (water immiscible solvent)
water
H₂O
N,N-dimethylformamide
C₃H₇NO
N-methyl-2-pyrrolidone
C₅H₉NO
tetrahydrofuran
C₄H₈O
ethylene glycol
C₂H₆O₂
propylene carbonate
C₄H₆O₃
surfactant
dextrose
polyethylene oxide
polyvinyl alcohol
hydrazine
N₂H₄
alkyl hydrazine
toluene
C₇H₈
alkyl borane
9-Borabicyclo(3.3.1)nonane
hydroquinone
borohydride
chloroform
CHCl₃
ethyl ether
C₄H₁₀O
ethyl acetate
C₄H₈O₂
hexane
C₆H₁₄
dichloromethane
CH₂Cl₂
support substrate
de-ionized water
isopropyl alcohol
C₃H₈O
graphene oxide (in second solution, dispersed in polar medium)
sodium dodecyl sulfate
TRITON X-100
MASON CS-428
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 30–1800 s | — |
Duration | 10–20 seconds | — |
Duration | 3–20 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR PREPARING GRAPHENE
SYSTEM AND METHOD FOR PREPARING GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE
METHOD OF MANUFACTURING A GRAPHENE-CONTAINING ELECTROLYTE
SURFACE-TREATED GRAPHENE, SURFACE-TREATED GRAPHENE/ORGANIC SOLVENT DISPERSION LIQUID, SURFACE-TREATED GRAPHENE/ELECTRODE ACTIVE MATERIAL COMPOSITE PARTICLES AND ELECTRODE PASTE
PROCESS FOR THE PREPARATION OF GRAPHENE
A preparation method of graphene and graphene oxide based on mixed acid system
COATING A SUBSTANCE WITH GRAPHENE
PREPARATION METHOD OF GRAPHENE
GRAPHENE OXIDE REDUCING AGENT AND METHOD FOR PREPARING REDUCED GRAPHENE OXIDE USING SAME
GRAPHENE DISPERSION, METHOD FOR PRODUCING ELECTRODE PASTE, AND METHOD FOR PRODUCING ELECTRODE
GRAPHENE DISPERSION, PROCESS FOR PRODUCING SAME, PROCESS FOR PRODUCING PARTICLES OF GRAPHENE/ACTIVE MATERIAL COMPOSITE, AND PROCESS FOR PRODUCING ELECTRODE PASTE
METHODS AND SYSTEMS FOR PREPARING GRAPHENE
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for producing graphene, the method comprising: receiving a first solution in a chamber including an inlet and an outlet, wherein the outlet is pitched with respect to the inlet, and wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region, and moving the first and second solutions towards the outlet of the chamber by at least one of a pressure differential in the chamber or a gravitational force in the chamber.
The method as recited in of claim 1, wherein: the second solution includes the graphene oxide dispersed in water; and the first solution is immiscible with the water.
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in a liquid, wherein the liquid comprises water, a polar organic solvent, N,N-dimethylformamide (DMF), N-methyl-2-pyrrolidone (NMP), tetrahydrofuran (THF), ethylene glycol (EG), propylene carbonate, and/or combinations or mixtures thereof. 8 S/N 14/820,184
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in water with a concentration of the graphene oxide to the water in a range of about O.lg/liter to about lg/liter.
The method as recited in of claim 1, wherein the second solution includes one or more of a surfactant, the graphene oxide in a non-aqueous medium, the graphene oxide in dimethylformamide, the graphene oxide dispersed in an organic solvent, and/or the graphene oxide dispersed in chloroform.
The method as recited in of claim 1, wherein the first solution or the second solution includes a viscosity enhancer.
The method as recited in of claim 1, wherein the first solution or the second solution includes a water soluble polymer.
The method as recited in of claim 1, wherein the first solution or the second solution includes at least one of dextrose, polyethylene oxide, and/or polyvinyl alcohol.
The method as recited in of claim 1, wherein the reducing agent in the first solution includes at least one of hydrazine, alkyl hydrazine, toluene, dichloromethane, an alkyl borane, 9-Borabicyclo(3.3.1)nonane, a hydroquinone, and/or a borohydride.
The method as recited in of claim 1, wherein the reducing agent is one of chloroform, ethyl ether, ethyl acetate, toluene, hexane, and/or dichloromethane, or combinations thereof.
The method as recited in of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt, wherein the support is one of a plastic, a polymer, a fluorocarbon, or a metal.
The method of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt; and rolling the graphene and the support onto a spool.
11-12.. canceled
9 S/N 14/820,184 canceled
A method for producing processed graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce the processed graphene.
The method of claim 15, wherein the third solution includes de-ionized water, water plus organic materials, and isopropyl alcohol. 10 S/N 14/820,184
The method of claim 15, wherein the heating of the washed graphene is at a temperature of about 15 degrees Celsius to about 30 degrees Celsius for a time period of about 3 minutes to about 20 minutes.
A method for producing graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; drawing the graphene out of the first chamber on to a support with a conveyer belt; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce processed graphene; and rolling the processed graphene and the support onto a spool.
The method as recited in of c laim 18, wherein: the second solution includes t he graphene oxide dispersed in water; and the first solution is immiscible with the water.
Layer stacks claimed or described, ordered top of device to substrate.
graphene production system
No layer stack recorded.
Materials described outside the worked examples.
graphene oxide
graphene
reducing agent (water immiscible solvent)
water
H₂O
N,N-dimethylformamide
C₃H₇NO
N-methyl-2-pyrrolidone
C₅H₉NO
tetrahydrofuran
C₄H₈O
ethylene glycol
C₂H₆O₂
propylene carbonate
C₄H₆O₃
surfactant
dextrose
polyethylene oxide
polyvinyl alcohol
hydrazine
N₂H₄
alkyl hydrazine
toluene
C₇H₈
alkyl borane
9-Borabicyclo(3.3.1)nonane
hydroquinone
borohydride
chloroform
CHCl₃
ethyl ether
C₄H₁₀O
ethyl acetate
C₄H₈O₂
hexane
C₆H₁₄
dichloromethane
CH₂Cl₂
support substrate
de-ionized water
isopropyl alcohol
C₃H₈O
graphene oxide (in second solution, dispersed in polar medium)
sodium dodecyl sulfate
TRITON X-100
MASON CS-428
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 30–1800 s | — |
Duration | 10–20 seconds | — |
Duration | 3–20 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR PREPARING GRAPHENE
SYSTEM AND METHOD FOR PREPARING GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE
METHOD OF MANUFACTURING A GRAPHENE-CONTAINING ELECTROLYTE
SURFACE-TREATED GRAPHENE, SURFACE-TREATED GRAPHENE/ORGANIC SOLVENT DISPERSION LIQUID, SURFACE-TREATED GRAPHENE/ELECTRODE ACTIVE MATERIAL COMPOSITE PARTICLES AND ELECTRODE PASTE
PROCESS FOR THE PREPARATION OF GRAPHENE
A preparation method of graphene and graphene oxide based on mixed acid system
COATING A SUBSTANCE WITH GRAPHENE
PREPARATION METHOD OF GRAPHENE
GRAPHENE OXIDE REDUCING AGENT AND METHOD FOR PREPARING REDUCED GRAPHENE OXIDE USING SAME
GRAPHENE DISPERSION, METHOD FOR PRODUCING ELECTRODE PASTE, AND METHOD FOR PRODUCING ELECTRODE
GRAPHENE DISPERSION, PROCESS FOR PRODUCING SAME, PROCESS FOR PRODUCING PARTICLES OF GRAPHENE/ACTIVE MATERIAL COMPOSITE, AND PROCESS FOR PRODUCING ELECTRODE PASTE
METHODS AND SYSTEMS FOR PREPARING GRAPHENE
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for producing graphene, the method comprising: receiving a first solution in a chamber including an inlet and an outlet, wherein the outlet is pitched with respect to the inlet, and wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region, and moving the first and second solutions towards the outlet of the chamber by at least one of a pressure differential in the chamber or a gravitational force in the chamber.
The method as recited in of claim 1, wherein: the second solution includes the graphene oxide dispersed in water; and the first solution is immiscible with the water.
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in a liquid, wherein the liquid comprises water, a polar organic solvent, N,N-dimethylformamide (DMF), N-methyl-2-pyrrolidone (NMP), tetrahydrofuran (THF), ethylene glycol (EG), propylene carbonate, and/or combinations or mixtures thereof. 8 S/N 14/820,184
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in water with a concentration of the graphene oxide to the water in a range of about O.lg/liter to about lg/liter.
The method as recited in of claim 1, wherein the second solution includes one or more of a surfactant, the graphene oxide in a non-aqueous medium, the graphene oxide in dimethylformamide, the graphene oxide dispersed in an organic solvent, and/or the graphene oxide dispersed in chloroform.
The method as recited in of claim 1, wherein the first solution or the second solution includes a viscosity enhancer.
The method as recited in of claim 1, wherein the first solution or the second solution includes a water soluble polymer.
The method as recited in of claim 1, wherein the first solution or the second solution includes at least one of dextrose, polyethylene oxide, and/or polyvinyl alcohol.
The method as recited in of claim 1, wherein the reducing agent in the first solution includes at least one of hydrazine, alkyl hydrazine, toluene, dichloromethane, an alkyl borane, 9-Borabicyclo(3.3.1)nonane, a hydroquinone, and/or a borohydride.
The method as recited in of claim 1, wherein the reducing agent is one of chloroform, ethyl ether, ethyl acetate, toluene, hexane, and/or dichloromethane, or combinations thereof.
The method as recited in of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt, wherein the support is one of a plastic, a polymer, a fluorocarbon, or a metal.
The method of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt; and rolling the graphene and the support onto a spool.
11-12.. canceled
9 S/N 14/820,184 canceled
A method for producing processed graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce the processed graphene.
The method of claim 15, wherein the third solution includes de-ionized water, water plus organic materials, and isopropyl alcohol. 10 S/N 14/820,184
The method of claim 15, wherein the heating of the washed graphene is at a temperature of about 15 degrees Celsius to about 30 degrees Celsius for a time period of about 3 minutes to about 20 minutes.
A method for producing graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; drawing the graphene out of the first chamber on to a support with a conveyer belt; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce processed graphene; and rolling the processed graphene and the support onto a spool.
The method as recited in of c laim 18, wherein: the second solution includes t he graphene oxide dispersed in water; and the first solution is immiscible with the water.
Layer stacks claimed or described, ordered top of device to substrate.
graphene production system
No layer stack recorded.
Materials described outside the worked examples.
graphene oxide
graphene
reducing agent (water immiscible solvent)
water
H₂O
N,N-dimethylformamide
C₃H₇NO
N-methyl-2-pyrrolidone
C₅H₉NO
tetrahydrofuran
C₄H₈O
ethylene glycol
C₂H₆O₂
propylene carbonate
C₄H₆O₃
surfactant
dextrose
polyethylene oxide
polyvinyl alcohol
hydrazine
N₂H₄
alkyl hydrazine
toluene
C₇H₈
alkyl borane
9-Borabicyclo(3.3.1)nonane
hydroquinone
borohydride
chloroform
CHCl₃
ethyl ether
C₄H₁₀O
ethyl acetate
C₄H₈O₂
hexane
C₆H₁₄
dichloromethane
CH₂Cl₂
support substrate
de-ionized water
isopropyl alcohol
C₃H₈O
graphene oxide (in second solution, dispersed in polar medium)
sodium dodecyl sulfate
TRITON X-100
MASON CS-428
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 30–1800 s | — |
Duration | 10–20 seconds | — |
Duration | 3–20 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR PREPARING GRAPHENE
SYSTEM AND METHOD FOR PREPARING GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE
METHOD OF MANUFACTURING A GRAPHENE-CONTAINING ELECTROLYTE
SURFACE-TREATED GRAPHENE, SURFACE-TREATED GRAPHENE/ORGANIC SOLVENT DISPERSION LIQUID, SURFACE-TREATED GRAPHENE/ELECTRODE ACTIVE MATERIAL COMPOSITE PARTICLES AND ELECTRODE PASTE
PROCESS FOR THE PREPARATION OF GRAPHENE
A preparation method of graphene and graphene oxide based on mixed acid system
COATING A SUBSTANCE WITH GRAPHENE
PREPARATION METHOD OF GRAPHENE
GRAPHENE OXIDE REDUCING AGENT AND METHOD FOR PREPARING REDUCED GRAPHENE OXIDE USING SAME
GRAPHENE DISPERSION, METHOD FOR PRODUCING ELECTRODE PASTE, AND METHOD FOR PRODUCING ELECTRODE
GRAPHENE DISPERSION, PROCESS FOR PRODUCING SAME, PROCESS FOR PRODUCING PARTICLES OF GRAPHENE/ACTIVE MATERIAL COMPOSITE, AND PROCESS FOR PRODUCING ELECTRODE PASTE
METHODS AND SYSTEMS FOR PREPARING GRAPHENE
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for producing graphene, the method comprising: receiving a first solution in a chamber including an inlet and an outlet, wherein the outlet is pitched with respect to the inlet, and wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region, and moving the first and second solutions towards the outlet of the chamber by at least one of a pressure differential in the chamber or a gravitational force in the chamber.
The method as recited in of claim 1, wherein: the second solution includes the graphene oxide dispersed in water; and the first solution is immiscible with the water.
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in a liquid, wherein the liquid comprises water, a polar organic solvent, N,N-dimethylformamide (DMF), N-methyl-2-pyrrolidone (NMP), tetrahydrofuran (THF), ethylene glycol (EG), propylene carbonate, and/or combinations or mixtures thereof. 8 S/N 14/820,184
The method as recited in of claim 1, wherein the second solution includes the graphene oxide dispersed in water with a concentration of the graphene oxide to the water in a range of about O.lg/liter to about lg/liter.
The method as recited in of claim 1, wherein the second solution includes one or more of a surfactant, the graphene oxide in a non-aqueous medium, the graphene oxide in dimethylformamide, the graphene oxide dispersed in an organic solvent, and/or the graphene oxide dispersed in chloroform.
The method as recited in of claim 1, wherein the first solution or the second solution includes a viscosity enhancer.
The method as recited in of claim 1, wherein the first solution or the second solution includes a water soluble polymer.
The method as recited in of claim 1, wherein the first solution or the second solution includes at least one of dextrose, polyethylene oxide, and/or polyvinyl alcohol.
The method as recited in of claim 1, wherein the reducing agent in the first solution includes at least one of hydrazine, alkyl hydrazine, toluene, dichloromethane, an alkyl borane, 9-Borabicyclo(3.3.1)nonane, a hydroquinone, and/or a borohydride.
The method as recited in of claim 1, wherein the reducing agent is one of chloroform, ethyl ether, ethyl acetate, toluene, hexane, and/or dichloromethane, or combinations thereof.
The method as recited in of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt, wherein the support is one of a plastic, a polymer, a fluorocarbon, or a metal.
The method of claim 1, further comprising: drawing the graphene out of the chamber on to a support with a conveyer belt; and rolling the graphene and the support onto a spool.
11-12.. canceled
9 S/N 14/820,184 canceled
A method for producing processed graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce the processed graphene.
The method of claim 15, wherein the third solution includes de-ionized water, water plus organic materials, and isopropyl alcohol. 10 S/N 14/820,184
The method of claim 15, wherein the heating of the washed graphene is at a temperature of about 15 degrees Celsius to about 30 degrees Celsius for a time period of about 3 minutes to about 20 minutes.
A method for producing graphene, the method comprising: receiving a first solution in a first chamber, wherein the first solution has a first density and includes a water immiscible solvent including a reducing agent; receiving a second solution in the first chamber, wherein the second solution has a second density, the second density being different from the first density and the second solution includes graphene oxide; contacting the first solution with the second solution in the first chamber, where surface tension forces caused by a difference between the first and second densities cause the first and second solution solutions to remain separate in the first chamber except at a planar interfacial region where the first and second solutions contact under sufficient reaction conditions to produce graphene in a planar configuration by reduction of the graphene oxide at the planar interfacial region; drawing the graphene out of the first chamber on to a support with a conveyer belt; receiving the graphene in a second chamber; contacting the graphene with a third solution in the second chamber to wash the graphene and produce washed graphene; receiving the washed graphene in a third chamber; heating the washed graphene in the third chamber to dry the graphene and produce processed graphene; and rolling the processed graphene and the support onto a spool.
The method as recited in of c laim 18, wherein: the second solution includes t he graphene oxide dispersed in water; and the first solution is immiscible with the water.
Layer stacks claimed or described, ordered top of device to substrate.
graphene production system
No layer stack recorded.
Materials described outside the worked examples.
graphene oxide
graphene
reducing agent (water immiscible solvent)
water
H₂O
N,N-dimethylformamide
C₃H₇NO
N-methyl-2-pyrrolidone
C₅H₉NO
tetrahydrofuran
C₄H₈O
ethylene glycol
C₂H₆O₂
propylene carbonate
C₄H₆O₃
surfactant
dextrose
polyethylene oxide
polyvinyl alcohol
hydrazine
N₂H₄
alkyl hydrazine
toluene
C₇H₈
alkyl borane
9-Borabicyclo(3.3.1)nonane
hydroquinone
borohydride
chloroform
CHCl₃
ethyl ether
C₄H₁₀O
ethyl acetate
C₄H₈O₂
hexane
C₆H₁₄
dichloromethane
CH₂Cl₂
support substrate
de-ionized water
isopropyl alcohol
C₃H₈O
graphene oxide (in second solution, dispersed in polar medium)
sodium dodecyl sulfate
TRITON X-100
MASON CS-428
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 30–1800 s | — |
Duration | 10–20 seconds | — |
Duration | 3–20 minutes | — |
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