Patent
US 10,427,941DIRECT ULTRASONICATION PRODUCTION OF GRAPHENE SHEETS FROM COKE OR COAL
Aruna Zhamu, Bor Z. Jang
US
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Patent
Atlas literature
Patent
US 10,427,941Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1). This can be readily accomplished by continuously or intermittently pumping the slurry out of the chamber and then re-circulating back to the chamber …
FIG. 2. A cascade of ultrasonicator chambers may be connected in series. Using needle coke as an example, the first step may involve preparing a coke powder …
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 producing a graphene-containing ink composition, said method comprising: a) dispersing particles of said coke or coal powder in a liquid medium containing therein an optional a surfactant or dispersing agent to produce a suspension and containing no oxidant or acid, wherein said coke or coal powder is selected from the group consisting of petroleum coke, coal-derived coke, mesophase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, and combinations thereo f; and b) exposing said suspension to ultrasonication at an energy level for a sufficient length of time to produce said isolated graphene sheets in said liquid medium c) adding a property modifier or chemical species to produce a graphene- containing ink composition, wherein said addition can occur before, during or after exposing said suspension to ultrasonication.
The method of claim 1 wherein said step of ultrasonication has a time from 5 minutes to 2 hours.
The method of claim 1 further comprising a mechanical shearing treatment selected from air milling, air jet milling, wet milling, ball milling, rotating blade shearing, or a combination thereof.
The method of claim 1 further comprising a step of spraying said graphene-containing ink composition onto a solid surface to form a wet film, and drying said wet film, to form a dried graphene film.
The method of claim 1 further comprising a step of coating said graphene-containing ink composition onto a solid surface to form a wet film having aligned graphene sheets, and drying said wet film, to form a dried graphene film.
The method of claim 1 wherein said liquid is selected from the group consisting of water, organic solvents, alcohols, monomers, oligomers, and resins.
The method of claim 1 wherein said property modifier or chemical species is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, silicone surfactants, fluorosurfactants, polymeric surfactants, sodium hexametaphosphate, sodium lignosulfonate, poly (sodium 4-styrene sulfonate), sodium dodecylsulfate, sodium sulfate, sodium phosphate, sodium sulfonate, melamine, ammonium sulfate, sodium dodecyl sulfate, sodium (ethylenediamine), tetraa l kylamm onium, ammonia, carbamide, hexamethylenetetramine, organic amine, pyrene, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, 1-pyrenamine, poly(sodium⁻⁴- styrene sulfonate), and combinations thereof.
A graphene-containing ink composition made by the process of claim 1.
A graphene-containing ink composition made by the process of claim 1, comprising graphene having from 1-8 graphene layers.
A composite material containing graphene sheets produced by the method of claim 1.
A mass of isolated graphene sheets in a powder form produced in claim 1.
Materials described outside the worked examples.
coke or coal powder
graphene-containing ink composition
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 650–1200 W | — |
— |
Patent
Atlas literature
Patent
US 10,427,941Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1). This can be readily accomplished by continuously or intermittently pumping the slurry out of the chamber and then re-circulating back to the chamber …
FIG. 2. A cascade of ultrasonicator chambers may be connected in series. Using needle coke as an example, the first step may involve preparing a coke powder …
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 producing a graphene-containing ink composition, said method comprising: a) dispersing particles of said coke or coal powder in a liquid medium containing therein an optional a surfactant or dispersing agent to produce a suspension and containing no oxidant or acid, wherein said coke or coal powder is selected from the group consisting of petroleum coke, coal-derived coke, mesophase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, and combinations thereo f; and b) exposing said suspension to ultrasonication at an energy level for a sufficient length of time to produce said isolated graphene sheets in said liquid medium c) adding a property modifier or chemical species to produce a graphene- containing ink composition, wherein said addition can occur before, during or after exposing said suspension to ultrasonication.
The method of claim 1 wherein said step of ultrasonication has a time from 5 minutes to 2 hours.
The method of claim 1 further comprising a mechanical shearing treatment selected from air milling, air jet milling, wet milling, ball milling, rotating blade shearing, or a combination thereof.
The method of claim 1 further comprising a step of spraying said graphene-containing ink composition onto a solid surface to form a wet film, and drying said wet film, to form a dried graphene film.
The method of claim 1 further comprising a step of coating said graphene-containing ink composition onto a solid surface to form a wet film having aligned graphene sheets, and drying said wet film, to form a dried graphene film.
The method of claim 1 wherein said liquid is selected from the group consisting of water, organic solvents, alcohols, monomers, oligomers, and resins.
The method of claim 1 wherein said property modifier or chemical species is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, silicone surfactants, fluorosurfactants, polymeric surfactants, sodium hexametaphosphate, sodium lignosulfonate, poly (sodium 4-styrene sulfonate), sodium dodecylsulfate, sodium sulfate, sodium phosphate, sodium sulfonate, melamine, ammonium sulfate, sodium dodecyl sulfate, sodium (ethylenediamine), tetraa l kylamm onium, ammonia, carbamide, hexamethylenetetramine, organic amine, pyrene, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, 1-pyrenamine, poly(sodium⁻⁴- styrene sulfonate), and combinations thereof.
A graphene-containing ink composition made by the process of claim 1.
A graphene-containing ink composition made by the process of claim 1, comprising graphene having from 1-8 graphene layers.
A composite material containing graphene sheets produced by the method of claim 1.
A mass of isolated graphene sheets in a powder form produced in claim 1.
Materials described outside the worked examples.
coke or coal powder
graphene-containing ink composition
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 650–1200 W | — |
— |
Patent
Atlas literature
Patent
US 10,427,941Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1). This can be readily accomplished by continuously or intermittently pumping the slurry out of the chamber and then re-circulating back to the chamber …
FIG. 2. A cascade of ultrasonicator chambers may be connected in series. Using needle coke as an example, the first step may involve preparing a coke powder …
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 producing a graphene-containing ink composition, said method comprising: a) dispersing particles of said coke or coal powder in a liquid medium containing therein an optional a surfactant or dispersing agent to produce a suspension and containing no oxidant or acid, wherein said coke or coal powder is selected from the group consisting of petroleum coke, coal-derived coke, mesophase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, and combinations thereo f; and b) exposing said suspension to ultrasonication at an energy level for a sufficient length of time to produce said isolated graphene sheets in said liquid medium c) adding a property modifier or chemical species to produce a graphene- containing ink composition, wherein said addition can occur before, during or after exposing said suspension to ultrasonication.
The method of claim 1 wherein said step of ultrasonication has a time from 5 minutes to 2 hours.
The method of claim 1 further comprising a mechanical shearing treatment selected from air milling, air jet milling, wet milling, ball milling, rotating blade shearing, or a combination thereof.
The method of claim 1 further comprising a step of spraying said graphene-containing ink composition onto a solid surface to form a wet film, and drying said wet film, to form a dried graphene film.
The method of claim 1 further comprising a step of coating said graphene-containing ink composition onto a solid surface to form a wet film having aligned graphene sheets, and drying said wet film, to form a dried graphene film.
The method of claim 1 wherein said liquid is selected from the group consisting of water, organic solvents, alcohols, monomers, oligomers, and resins.
The method of claim 1 wherein said property modifier or chemical species is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, silicone surfactants, fluorosurfactants, polymeric surfactants, sodium hexametaphosphate, sodium lignosulfonate, poly (sodium 4-styrene sulfonate), sodium dodecylsulfate, sodium sulfate, sodium phosphate, sodium sulfonate, melamine, ammonium sulfate, sodium dodecyl sulfate, sodium (ethylenediamine), tetraa l kylamm onium, ammonia, carbamide, hexamethylenetetramine, organic amine, pyrene, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, 1-pyrenamine, poly(sodium⁻⁴- styrene sulfonate), and combinations thereof.
A graphene-containing ink composition made by the process of claim 1.
A graphene-containing ink composition made by the process of claim 1, comprising graphene having from 1-8 graphene layers.
A composite material containing graphene sheets produced by the method of claim 1.
A mass of isolated graphene sheets in a powder form produced in claim 1.
Materials described outside the worked examples.
coke or coal powder
graphene-containing ink composition
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 650–1200 W | — |
— |
Patent
Atlas literature
Patent
US 10,427,941Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1). This can be readily accomplished by continuously or intermittently pumping the slurry out of the chamber and then re-circulating back to the chamber …
FIG. 2. A cascade of ultrasonicator chambers may be connected in series. Using needle coke as an example, the first step may involve preparing a coke powder …
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 producing a graphene-containing ink composition, said method comprising: a) dispersing particles of said coke or coal powder in a liquid medium containing therein an optional a surfactant or dispersing agent to produce a suspension and containing no oxidant or acid, wherein said coke or coal powder is selected from the group consisting of petroleum coke, coal-derived coke, mesophase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, and combinations thereo f; and b) exposing said suspension to ultrasonication at an energy level for a sufficient length of time to produce said isolated graphene sheets in said liquid medium c) adding a property modifier or chemical species to produce a graphene- containing ink composition, wherein said addition can occur before, during or after exposing said suspension to ultrasonication.
The method of claim 1 wherein said step of ultrasonication has a time from 5 minutes to 2 hours.
The method of claim 1 further comprising a mechanical shearing treatment selected from air milling, air jet milling, wet milling, ball milling, rotating blade shearing, or a combination thereof.
The method of claim 1 further comprising a step of spraying said graphene-containing ink composition onto a solid surface to form a wet film, and drying said wet film, to form a dried graphene film.
The method of claim 1 further comprising a step of coating said graphene-containing ink composition onto a solid surface to form a wet film having aligned graphene sheets, and drying said wet film, to form a dried graphene film.
The method of claim 1 wherein said liquid is selected from the group consisting of water, organic solvents, alcohols, monomers, oligomers, and resins.
The method of claim 1 wherein said property modifier or chemical species is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, silicone surfactants, fluorosurfactants, polymeric surfactants, sodium hexametaphosphate, sodium lignosulfonate, poly (sodium 4-styrene sulfonate), sodium dodecylsulfate, sodium sulfate, sodium phosphate, sodium sulfonate, melamine, ammonium sulfate, sodium dodecyl sulfate, sodium (ethylenediamine), tetraa l kylamm onium, ammonia, carbamide, hexamethylenetetramine, organic amine, pyrene, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, 1-pyrenamine, poly(sodium⁻⁴- styrene sulfonate), and combinations thereof.
A graphene-containing ink composition made by the process of claim 1.
A graphene-containing ink composition made by the process of claim 1, comprising graphene having from 1-8 graphene layers.
A composite material containing graphene sheets produced by the method of claim 1.
A mass of isolated graphene sheets in a powder form produced in claim 1.
Materials described outside the worked examples.
coke or coal powder
graphene-containing ink composition
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 650–1200 W | — |
— |
surfactant or dispersing agent
liquid medium
property modifier or chemical species
isolated graphene sheets
| — |
Temperature | 0–100 °C | — |
Thickness | 200–300 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≤ 3.4 nm | — |
Thickness | ≤ 0.2 mm | — |
Thickness | ≤ 0.01 mm | — |
Duration | 300–7200 s | — |
Temperature | 100–3200 °C | — |
Temperature | 500–2800 °C | — |
Temperature | 1000–2600 °C | — |
surfactant or dispersing agent
liquid medium
property modifier or chemical species
isolated graphene sheets
| — |
Temperature | 0–100 °C | — |
Thickness | 200–300 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≤ 3.4 nm | — |
Thickness | ≤ 0.2 mm | — |
Thickness | ≤ 0.01 mm | — |
Duration | 300–7200 s | — |
Temperature | 100–3200 °C | — |
Temperature | 500–2800 °C | — |
Temperature | 1000–2600 °C | — |
surfactant or dispersing agent
liquid medium
property modifier or chemical species
isolated graphene sheets
| — |
Temperature | 0–100 °C | — |
Thickness | 200–300 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≤ 3.4 nm | — |
Thickness | ≤ 0.2 mm | — |
Thickness | ≤ 0.01 mm | — |
Duration | 300–7200 s | — |
Temperature | 100–3200 °C | — |
Temperature | 500–2800 °C | — |
Temperature | 1000–2600 °C | — |
surfactant or dispersing agent
liquid medium
property modifier or chemical species
isolated graphene sheets
| — |
Temperature | 0–100 °C | — |
Thickness | 200–300 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≤ 3.4 nm | — |
Thickness | ≤ 0.2 mm | — |
Thickness | ≤ 0.01 mm | — |
Duration | 300–7200 s | — |
Temperature | 100–3200 °C | — |
Temperature | 500–2800 °C | — |
Temperature | 1000–2600 °C | — |