Patent
US 9,878,913Graphene Formation
Ramaprabhu Sundara
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,878,913Patent 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 of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the insert inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute temperature in a range of 200 degroes Celsius to 300 degrees Celsius and under second sufficient reaction conditions to form graphene.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat; and placing the quartz boat inside the chamber.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat with a diameter of about 25mm; and placing the quartz boat inside the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber over a time interval in a range from about 5 minutes to about 10 minutes, where the chamber is at a temperature in a range of 25 degrees Celsius to 30 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing the inert gas through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is 25 degrees Celsius to 30 degrees Celsius; and 2 flowing the inert gas through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing argon through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is in a range of 25 degrees Celsius to 30 degrees Celsius; and flowing the Argon argon through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, further comprising stopping flowing the inert gas prior to exposing the graphite oxide to the hydrogen.
The method as recited in claim 1, further comprising combining graphite, sodium nitrate and potassium permanganate in sulfuric acid under sufficient reaction conditions to produce the graphite oxide.
The method as recited in claim 1, wherein the graphite oxide is produced by: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of 25 degrees Celsius to 30 degrees Celsius; 3 adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of 60 degrees Celsius to degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide.
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. canceled
(Withdrawn-Currently Amended) A system effective to form graphene, the system comprising: a chamber adapted to receive graphite oxide, wherein the chamber defines an atmosphere; a first source of an inert gas configured to be in communication with the chamber; a second source of hydrogen configured to be in communication with the chamber; and a processor configured to be in communication with the chamber, the first source and the second source, wherein the processor is configured effective to control the flow of the inert gas from the first source through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere; and control the flow of the hydrogen at a rate of 20 standard cubic centimeters per minute from the second source to the graphite oxide in the chamber under second sufficient reaction conditions to form graphene from the graphite oxide; and control a heat source configured in communication with the processor and the chamber such that the temperature of the chamber is increased to a range of 200 degrees Celsius to 300 degrees Celsius during the flow of hydrogen, to provide the second sufficient reaction conditions to form graphene from the graphite oxide.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; 4 wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a time interval in a range from about 5 minutes to about 10 minutes; control the heat source during the time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; and wherein the processor is further configured effective to control the flow of the inert gas from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the inert gas from the first source through the chamber during a second time interval for about 10 minutes, and control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the Argon argon from the first source through the chamber during a second time interval for about 10 minutes, and 5 control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source in communication with the processor and the chamber; and wherein the processor is configured effective to control the flow of the hydrogen from the second source to the graphite oxide during a time interval; and control the heat source during the time interval such that a temperature in the chamber is in [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
The system as recited in claim 13, wherein the processor is further configured effective to control the first source to stop the flow of the inert gas prior to being effective to control the second source to expose the graphite oxide to the hydrogen. withdrawn
A method for forming graphite oxide, the method comprising: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius; adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of about 60 degrees Celsius to about degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; 6 filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide. withdrawn
The method as recited in claim 19, wherein a ratio of graphite to sodium nitrate to potassium permanganate is about 2:1:6; and a ratio of graphite to sulf u ric acid is about 1:23. withdrawn
A method of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute, a temperature in a range of 200 degrees Celsius to 300 degrees Celsius, and under second sufficient reaction conditions to form graphene. 7
Layer stacks claimed or described, ordered top of device to substrate.
graphene formation system
No layer stack recorded.
Materials described outside the worked examples.
graphite oxide
inert gas
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 1–2 minutes | — |
Duration |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE COMPOSITE, METHOD FOR PRODUCING GRAPHENE COMPOSITE AND ELECTRODE FOR LITHIUM ION BATTERY CONTAINING GRAPHENE COMPOSITE
PROCESS FOR THE PREPARATION OF NANO-SCALED GRAPHENE PLATELETS WITH A HIGH DISPERSIBILITY IN LOW-POLARITY POLYMERIC MATRIXES AND RELATIVE POLYMERIC COMPOSITIONS
Patent
Atlas literature
Patent
US 9,878,913Patent 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 of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the insert inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute temperature in a range of 200 degroes Celsius to 300 degrees Celsius and under second sufficient reaction conditions to form graphene.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat; and placing the quartz boat inside the chamber.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat with a diameter of about 25mm; and placing the quartz boat inside the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber over a time interval in a range from about 5 minutes to about 10 minutes, where the chamber is at a temperature in a range of 25 degrees Celsius to 30 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing the inert gas through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is 25 degrees Celsius to 30 degrees Celsius; and 2 flowing the inert gas through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing argon through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is in a range of 25 degrees Celsius to 30 degrees Celsius; and flowing the Argon argon through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, further comprising stopping flowing the inert gas prior to exposing the graphite oxide to the hydrogen.
The method as recited in claim 1, further comprising combining graphite, sodium nitrate and potassium permanganate in sulfuric acid under sufficient reaction conditions to produce the graphite oxide.
The method as recited in claim 1, wherein the graphite oxide is produced by: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of 25 degrees Celsius to 30 degrees Celsius; 3 adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of 60 degrees Celsius to degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide.
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. canceled
(Withdrawn-Currently Amended) A system effective to form graphene, the system comprising: a chamber adapted to receive graphite oxide, wherein the chamber defines an atmosphere; a first source of an inert gas configured to be in communication with the chamber; a second source of hydrogen configured to be in communication with the chamber; and a processor configured to be in communication with the chamber, the first source and the second source, wherein the processor is configured effective to control the flow of the inert gas from the first source through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere; and control the flow of the hydrogen at a rate of 20 standard cubic centimeters per minute from the second source to the graphite oxide in the chamber under second sufficient reaction conditions to form graphene from the graphite oxide; and control a heat source configured in communication with the processor and the chamber such that the temperature of the chamber is increased to a range of 200 degrees Celsius to 300 degrees Celsius during the flow of hydrogen, to provide the second sufficient reaction conditions to form graphene from the graphite oxide.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; 4 wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a time interval in a range from about 5 minutes to about 10 minutes; control the heat source during the time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; and wherein the processor is further configured effective to control the flow of the inert gas from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the inert gas from the first source through the chamber during a second time interval for about 10 minutes, and control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the Argon argon from the first source through the chamber during a second time interval for about 10 minutes, and 5 control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source in communication with the processor and the chamber; and wherein the processor is configured effective to control the flow of the hydrogen from the second source to the graphite oxide during a time interval; and control the heat source during the time interval such that a temperature in the chamber is in [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
The system as recited in claim 13, wherein the processor is further configured effective to control the first source to stop the flow of the inert gas prior to being effective to control the second source to expose the graphite oxide to the hydrogen. withdrawn
A method for forming graphite oxide, the method comprising: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius; adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of about 60 degrees Celsius to about degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; 6 filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide. withdrawn
The method as recited in claim 19, wherein a ratio of graphite to sodium nitrate to potassium permanganate is about 2:1:6; and a ratio of graphite to sulf u ric acid is about 1:23. withdrawn
A method of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute, a temperature in a range of 200 degrees Celsius to 300 degrees Celsius, and under second sufficient reaction conditions to form graphene. 7
Layer stacks claimed or described, ordered top of device to substrate.
graphene formation system
No layer stack recorded.
Materials described outside the worked examples.
graphite oxide
inert gas
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 1–2 minutes | — |
Duration |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE COMPOSITE, METHOD FOR PRODUCING GRAPHENE COMPOSITE AND ELECTRODE FOR LITHIUM ION BATTERY CONTAINING GRAPHENE COMPOSITE
PROCESS FOR THE PREPARATION OF NANO-SCALED GRAPHENE PLATELETS WITH A HIGH DISPERSIBILITY IN LOW-POLARITY POLYMERIC MATRIXES AND RELATIVE POLYMERIC COMPOSITIONS
Patent
Atlas literature
Patent
US 9,878,913Patent 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 of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the insert inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute temperature in a range of 200 degroes Celsius to 300 degrees Celsius and under second sufficient reaction conditions to form graphene.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat; and placing the quartz boat inside the chamber.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat with a diameter of about 25mm; and placing the quartz boat inside the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber over a time interval in a range from about 5 minutes to about 10 minutes, where the chamber is at a temperature in a range of 25 degrees Celsius to 30 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing the inert gas through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is 25 degrees Celsius to 30 degrees Celsius; and 2 flowing the inert gas through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing argon through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is in a range of 25 degrees Celsius to 30 degrees Celsius; and flowing the Argon argon through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, further comprising stopping flowing the inert gas prior to exposing the graphite oxide to the hydrogen.
The method as recited in claim 1, further comprising combining graphite, sodium nitrate and potassium permanganate in sulfuric acid under sufficient reaction conditions to produce the graphite oxide.
The method as recited in claim 1, wherein the graphite oxide is produced by: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of 25 degrees Celsius to 30 degrees Celsius; 3 adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of 60 degrees Celsius to degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide.
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. canceled
(Withdrawn-Currently Amended) A system effective to form graphene, the system comprising: a chamber adapted to receive graphite oxide, wherein the chamber defines an atmosphere; a first source of an inert gas configured to be in communication with the chamber; a second source of hydrogen configured to be in communication with the chamber; and a processor configured to be in communication with the chamber, the first source and the second source, wherein the processor is configured effective to control the flow of the inert gas from the first source through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere; and control the flow of the hydrogen at a rate of 20 standard cubic centimeters per minute from the second source to the graphite oxide in the chamber under second sufficient reaction conditions to form graphene from the graphite oxide; and control a heat source configured in communication with the processor and the chamber such that the temperature of the chamber is increased to a range of 200 degrees Celsius to 300 degrees Celsius during the flow of hydrogen, to provide the second sufficient reaction conditions to form graphene from the graphite oxide.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; 4 wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a time interval in a range from about 5 minutes to about 10 minutes; control the heat source during the time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; and wherein the processor is further configured effective to control the flow of the inert gas from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the inert gas from the first source through the chamber during a second time interval for about 10 minutes, and control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the Argon argon from the first source through the chamber during a second time interval for about 10 minutes, and 5 control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source in communication with the processor and the chamber; and wherein the processor is configured effective to control the flow of the hydrogen from the second source to the graphite oxide during a time interval; and control the heat source during the time interval such that a temperature in the chamber is in [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
The system as recited in claim 13, wherein the processor is further configured effective to control the first source to stop the flow of the inert gas prior to being effective to control the second source to expose the graphite oxide to the hydrogen. withdrawn
A method for forming graphite oxide, the method comprising: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius; adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of about 60 degrees Celsius to about degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; 6 filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide. withdrawn
The method as recited in claim 19, wherein a ratio of graphite to sodium nitrate to potassium permanganate is about 2:1:6; and a ratio of graphite to sulf u ric acid is about 1:23. withdrawn
A method of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute, a temperature in a range of 200 degrees Celsius to 300 degrees Celsius, and under second sufficient reaction conditions to form graphene. 7
Layer stacks claimed or described, ordered top of device to substrate.
graphene formation system
No layer stack recorded.
Materials described outside the worked examples.
graphite oxide
inert gas
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 1–2 minutes | — |
Duration |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE COMPOSITE, METHOD FOR PRODUCING GRAPHENE COMPOSITE AND ELECTRODE FOR LITHIUM ION BATTERY CONTAINING GRAPHENE COMPOSITE
PROCESS FOR THE PREPARATION OF NANO-SCALED GRAPHENE PLATELETS WITH A HIGH DISPERSIBILITY IN LOW-POLARITY POLYMERIC MATRIXES AND RELATIVE POLYMERIC COMPOSITIONS
Patent
Atlas literature
Patent
US 9,878,913Patent 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 of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the insert inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute temperature in a range of 200 degroes Celsius to 300 degrees Celsius and under second sufficient reaction conditions to form graphene.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat; and placing the quartz boat inside the chamber.
The method as recited in claim 1, further comprising: placing the graphite oxide in a quartz boat with a diameter of about 25mm; and placing the quartz boat inside the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber.
The method as recited in claim 1, wherein the first reaction conditions include flowing argon through the chamber over a time interval in a range from about 5 minutes to about 10 minutes, where the chamber is at a temperature in a range of 25 degrees Celsius to 30 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing the inert gas through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is 25 degrees Celsius to 30 degrees Celsius; and 2 flowing the inert gas through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, wherein the first reaction conditions include: flowing argon through the chamber over a time interval in a range from 5 minutes to 10 minutes, where the temperature of the chamber is in a range of 25 degrees Celsius to 30 degrees Celsius; and flowing the Argon argon through the chamber for 10 minutes while increasing the temperature of the chamber to a range of 200 degrees Celsius to 300 degrees Celsius.
The method as recited in claim 1, further comprising stopping flowing the inert gas prior to exposing the graphite oxide to the hydrogen.
The method as recited in claim 1, further comprising combining graphite, sodium nitrate and potassium permanganate in sulfuric acid under sufficient reaction conditions to produce the graphite oxide.
The method as recited in claim 1, wherein the graphite oxide is produced by: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of 25 degrees Celsius to 30 degrees Celsius; 3 adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of 60 degrees Celsius to degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide.
. canceled
. canceled
(Withdrawn-Currently Amended) A system effective to form graphene, the system comprising: a chamber adapted to receive graphite oxide, wherein the chamber defines an atmosphere; a first source of an inert gas configured to be in communication with the chamber; a second source of hydrogen configured to be in communication with the chamber; and a processor configured to be in communication with the chamber, the first source and the second source, wherein the processor is configured effective to control the flow of the inert gas from the first source through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere; and control the flow of the hydrogen at a rate of 20 standard cubic centimeters per minute from the second source to the graphite oxide in the chamber under second sufficient reaction conditions to form graphene from the graphite oxide; and control a heat source configured in communication with the processor and the chamber such that the temperature of the chamber is increased to a range of 200 degrees Celsius to 300 degrees Celsius during the flow of hydrogen, to provide the second sufficient reaction conditions to form graphene from the graphite oxide.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; 4 wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a time interval in a range from about 5 minutes to about 10 minutes; control the heat source during the time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; and wherein the processor is further configured effective to control the flow of the inert gas from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the inert gas from the first source through the chamber during a second time interval for about 10 minutes, and control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source configured in communication with the processor and the chamber; wherein the inert gas is Argon argon; and wherein the processor is further configured effective to control the flow of the Argon argon from the first source through the chamber for a first time interval in a range from about 5 to about 10 minutes, control the heat source during the first time interval such that the chamber is at a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius, control the flow of the Argon argon from the first source through the chamber during a second time interval for about 10 minutes, and 5 control the heat source during the second time interval such that the temperature of the chamber is increased to [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
(Withdrawn-Currently Amended) The system as recited in claim 13, further comprising: a heat source in communication with the processor and the chamber; and wherein the processor is configured effective to control the flow of the hydrogen from the second source to the graphite oxide during a time interval; and control the heat source during the time interval such that a temperature in the chamber is in [[a]] the range of about 200 degrees Celsius to about 300 degrees Celsius.
The system as recited in claim 13, wherein the processor is further configured effective to control the first source to stop the flow of the inert gas prior to being effective to control the second source to expose the graphite oxide to the hydrogen. withdrawn
A method for forming graphite oxide, the method comprising: combining graphite, sodium nitrate and potassium permanganate in sulfuric acid to produce a first combination; placing the first combination in a first container; placing the first container in a second container, the second container including ice water; stirring the first combination to produce a second combination; removing the first container from the second container; raising the temperature of the first container to a temperature in a range of about 25 degrees Celsius to about 30 degrees Celsius; adding distilled water to the second combination; stirring the distilled water and the second combination; adding water with a temperature in a range of about 60 degrees Celsius to about degrees Celsius to the distilled water and the second combination to produce a third combination; stirring the third combination; adding H 2 0 2 to the third combination to produce a fourth combination; 6 filtering the fourth combination to produce a filter cake; adding water to the filter cake to produce a fifth combination; spinning the fifth combination to produce a product; and drying the product to produce the graphite oxide. withdrawn
The method as recited in claim 19, wherein a ratio of graphite to sodium nitrate to potassium permanganate is about 2:1:6; and a ratio of graphite to sulf u ric acid is about 1:23. withdrawn
A method of forming graphene, the method comprising: flowing an inert gas through an atmosphere in a chamber, wherein the chamber includes graphite oxide placed therein, wherein the inert gas is flowed through the chamber under first sufficient reaction conditions to remove at least some oxygen from the atmosphere in the chamber; and after flowing the inert gas, exposing the graphite oxide in the chamber to hydrogen at a rate of 20 standard cubic centimeters per minute, a temperature in a range of 200 degrees Celsius to 300 degrees Celsius, and under second sufficient reaction conditions to form graphene. 7
Layer stacks claimed or described, ordered top of device to substrate.
graphene formation system
No layer stack recorded.
Materials described outside the worked examples.
graphite oxide
inert gas
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 1–2 minutes | — |
Duration |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE COMPOSITE, METHOD FOR PRODUCING GRAPHENE COMPOSITE AND ELECTRODE FOR LITHIUM ION BATTERY CONTAINING GRAPHENE COMPOSITE
PROCESS FOR THE PREPARATION OF NANO-SCALED GRAPHENE PLATELETS WITH A HIGH DISPERSIBILITY IN LOW-POLARITY POLYMERIC MATRIXES AND RELATIVE POLYMERIC COMPOSITIONS
H₂
argon
Ar
graphite
C
sodium nitrate
NaNO₃
potassium permanganate
KMnO₄
sulfuric acid
H₂SO₄
hydrogen peroxide
H₂O₂
graphene
| 5–10 minutes |
| — |
Duration | 5–6 minutes | — |
Duration | 20–30 minutes | — |
Duration | 15–30 minutes | — |
Thickness | ≤ 0.22 µm | — |
H₂
argon
Ar
graphite
C
sodium nitrate
NaNO₃
potassium permanganate
KMnO₄
sulfuric acid
H₂SO₄
hydrogen peroxide
H₂O₂
graphene
| 5–10 minutes |
| — |
Duration | 5–6 minutes | — |
Duration | 20–30 minutes | — |
Duration | 15–30 minutes | — |
Thickness | ≤ 0.22 µm | — |
H₂
argon
Ar
graphite
C
sodium nitrate
NaNO₃
potassium permanganate
KMnO₄
sulfuric acid
H₂SO₄
hydrogen peroxide
H₂O₂
graphene
| 5–10 minutes |
| — |
Duration | 5–6 minutes | — |
Duration | 20–30 minutes | — |
Duration | 15–30 minutes | — |
Thickness | ≤ 0.22 µm | — |
H₂
argon
Ar
graphite
C
sodium nitrate
NaNO₃
potassium permanganate
KMnO₄
sulfuric acid
H₂SO₄
hydrogen peroxide
H₂O₂
graphene
| 5–10 minutes |
| — |
Duration | 5–6 minutes | — |
Duration | 20–30 minutes | — |
Duration | 15–30 minutes | — |
Thickness | ≤ 0.22 µm | — |