Patent
US 10,472,242METHOD FOR PREPARING GRAPHENE BY USING HIGH SPEED HOMOGENIZATION PRETREATMENT AND HIGH PRESSURE HOMOGENIZATION
Seung Bo Yang
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,472,242Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
FIGS. 2 and 3, the graphene average size of the Examples was more narrowed as a whole as relative to the Comparative Example. In particular, the Comparative …
FIG. 4 shows the results of measuring the standard deviation of the size of graphene in each sample obtained in Comparative Example (
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
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 preparing graphene comprising: a step of subjecting a dispersion solution containing expanded graphite and a dispersant to high speed homogenization to prepare a feed solution (step 1); and a step of passing the feed solu t ion through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale (step 2), wherein the weight ratio of the expanded graphite and the dispersant is 2. 5 to 20, and the high-speed homogenization is carried out by stirring the dispersion solution at 3000 to 8000 rpm. Currently amended
The method for preparing graphene according to claim 1, wherein the expanded graphite ha s a tap density of 0.01 to 0.5 g/cm 3 and BET(surface area) of 5 to 50 m2 Original
The method for preparing graphene according to claim 1, wherein the d i spersant is pyrene-based low molec ul ar weight derivatives; ce llu losic polymers; cationic surfactants; anionic surfactants; gum arabic; n-dodecyl b-D- -mal toside; amphoteric surfactants; polyv inyl pyrro li done-based polym er s; polyethylene oxide-based polymers; ethylene oxide-propylene oxide copoly m ers; tannic acid; or a mixture of plural kinds of polyaromatic hydrocarbon oxides, which is a mixture containing polyaromatic hydrocarbon oxides having a molecular weig h t of 300 to 1000 in an amount of 60 wt% or more. Original
The method for preparing graphene according to claim 1, wherein the concentration of expanded graphite in the dispersion solution is 0.5 to 5% by weight. Original
The method for preparing graphene according to claim 1, wherein the solvent of the dispersion solu ti on is one or more selected from the group consisting of w ater, NMP (N-methyl-2-pyrrolidone), acetone, DMF (N,N-dimethylformamide), DMSO (dimethyl sulfoxide), CHP (cyclohexyl-pyrrolidinone), N₁₂P (N-dodecyl-pyrrolidone), benzyl b e nzoate, N₈ P (N-octyl-pyrrolidone), DMEU (dimethyl-imidazolidinone), cyclohexanone, DMA (dimethylacetamide), NMF (N-methyl fo rm amide), bromobenz ene, chloroform, chlorobenz e ne, benzo nitri le, quinoline, benzyl ether, ethanol, isoprop yl alcohol, met ha nol, butanol, 2- ethoxyethanol, 2-butoxyethano l, 2 -me thoxypropano l, THF(t e trahydrofuran), ethylene glycol, pyridine, N -vinyl pyrrolidone, methyl ethyl ketone (butanone), alpha- t erpin e ol, formic acid, ethyl acetate and acrylonitrile. Original
The method for preparing graphene according to claim 1, wherein the expanded graphite in the feed solution is exfoliated while passing through a micro- channel under application of a she a r force, thereby preparing a graphene. Original
The method for preparing graphene according to claim 1, wherein the micro-channel has a diameter of 50 to 300 pm. Original
The met ho d for preparing graphe n e according to claim 1, wherein the feed solution is introduced in the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passed through the micro-channel. Original
The method for preparing graphene according to claim 1, wherein the step 2 is additionally repeated 2 to 10 times. Original
The method for preparing graphene according to claim 1, wherein the graphene prepared has an average size (lateral size) of 1 to 5 pm. Original
Canceled
Canceled
The method for preparing grap h ene according to claim 71, wherein the high -speed hom ogenization is carried out for 0.5 to 3 hours. Currently amended
Materials described outside the worked examples.
expanded graphite
dispersant
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
expanded graphite tap density | 0.01–0.5 g/cm3 | expanded graphite |
expanded graphite BET surface area | 5–50 m2/g |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,472,242Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
FIGS. 2 and 3, the graphene average size of the Examples was more narrowed as a whole as relative to the Comparative Example. In particular, the Comparative …
FIG. 4 shows the results of measuring the standard deviation of the size of graphene in each sample obtained in Comparative Example (
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
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 preparing graphene comprising: a step of subjecting a dispersion solution containing expanded graphite and a dispersant to high speed homogenization to prepare a feed solution (step 1); and a step of passing the feed solu t ion through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale (step 2), wherein the weight ratio of the expanded graphite and the dispersant is 2. 5 to 20, and the high-speed homogenization is carried out by stirring the dispersion solution at 3000 to 8000 rpm. Currently amended
The method for preparing graphene according to claim 1, wherein the expanded graphite ha s a tap density of 0.01 to 0.5 g/cm 3 and BET(surface area) of 5 to 50 m2 Original
The method for preparing graphene according to claim 1, wherein the d i spersant is pyrene-based low molec ul ar weight derivatives; ce llu losic polymers; cationic surfactants; anionic surfactants; gum arabic; n-dodecyl b-D- -mal toside; amphoteric surfactants; polyv inyl pyrro li done-based polym er s; polyethylene oxide-based polymers; ethylene oxide-propylene oxide copoly m ers; tannic acid; or a mixture of plural kinds of polyaromatic hydrocarbon oxides, which is a mixture containing polyaromatic hydrocarbon oxides having a molecular weig h t of 300 to 1000 in an amount of 60 wt% or more. Original
The method for preparing graphene according to claim 1, wherein the concentration of expanded graphite in the dispersion solution is 0.5 to 5% by weight. Original
The method for preparing graphene according to claim 1, wherein the solvent of the dispersion solu ti on is one or more selected from the group consisting of w ater, NMP (N-methyl-2-pyrrolidone), acetone, DMF (N,N-dimethylformamide), DMSO (dimethyl sulfoxide), CHP (cyclohexyl-pyrrolidinone), N₁₂P (N-dodecyl-pyrrolidone), benzyl b e nzoate, N₈ P (N-octyl-pyrrolidone), DMEU (dimethyl-imidazolidinone), cyclohexanone, DMA (dimethylacetamide), NMF (N-methyl fo rm amide), bromobenz ene, chloroform, chlorobenz e ne, benzo nitri le, quinoline, benzyl ether, ethanol, isoprop yl alcohol, met ha nol, butanol, 2- ethoxyethanol, 2-butoxyethano l, 2 -me thoxypropano l, THF(t e trahydrofuran), ethylene glycol, pyridine, N -vinyl pyrrolidone, methyl ethyl ketone (butanone), alpha- t erpin e ol, formic acid, ethyl acetate and acrylonitrile. Original
The method for preparing graphene according to claim 1, wherein the expanded graphite in the feed solution is exfoliated while passing through a micro- channel under application of a she a r force, thereby preparing a graphene. Original
The method for preparing graphene according to claim 1, wherein the micro-channel has a diameter of 50 to 300 pm. Original
The met ho d for preparing graphe n e according to claim 1, wherein the feed solution is introduced in the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passed through the micro-channel. Original
The method for preparing graphene according to claim 1, wherein the step 2 is additionally repeated 2 to 10 times. Original
The method for preparing graphene according to claim 1, wherein the graphene prepared has an average size (lateral size) of 1 to 5 pm. Original
Canceled
Canceled
The method for preparing grap h ene according to claim 71, wherein the high -speed hom ogenization is carried out for 0.5 to 3 hours. Currently amended
Materials described outside the worked examples.
expanded graphite
dispersant
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
expanded graphite tap density | 0.01–0.5 g/cm3 | expanded graphite |
expanded graphite BET surface area | 5–50 m2/g |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,472,242Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
FIGS. 2 and 3, the graphene average size of the Examples was more narrowed as a whole as relative to the Comparative Example. In particular, the Comparative …
FIG. 4 shows the results of measuring the standard deviation of the size of graphene in each sample obtained in Comparative Example (
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
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 preparing graphene comprising: a step of subjecting a dispersion solution containing expanded graphite and a dispersant to high speed homogenization to prepare a feed solution (step 1); and a step of passing the feed solu t ion through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale (step 2), wherein the weight ratio of the expanded graphite and the dispersant is 2. 5 to 20, and the high-speed homogenization is carried out by stirring the dispersion solution at 3000 to 8000 rpm. Currently amended
The method for preparing graphene according to claim 1, wherein the expanded graphite ha s a tap density of 0.01 to 0.5 g/cm 3 and BET(surface area) of 5 to 50 m2 Original
The method for preparing graphene according to claim 1, wherein the d i spersant is pyrene-based low molec ul ar weight derivatives; ce llu losic polymers; cationic surfactants; anionic surfactants; gum arabic; n-dodecyl b-D- -mal toside; amphoteric surfactants; polyv inyl pyrro li done-based polym er s; polyethylene oxide-based polymers; ethylene oxide-propylene oxide copoly m ers; tannic acid; or a mixture of plural kinds of polyaromatic hydrocarbon oxides, which is a mixture containing polyaromatic hydrocarbon oxides having a molecular weig h t of 300 to 1000 in an amount of 60 wt% or more. Original
The method for preparing graphene according to claim 1, wherein the concentration of expanded graphite in the dispersion solution is 0.5 to 5% by weight. Original
The method for preparing graphene according to claim 1, wherein the solvent of the dispersion solu ti on is one or more selected from the group consisting of w ater, NMP (N-methyl-2-pyrrolidone), acetone, DMF (N,N-dimethylformamide), DMSO (dimethyl sulfoxide), CHP (cyclohexyl-pyrrolidinone), N₁₂P (N-dodecyl-pyrrolidone), benzyl b e nzoate, N₈ P (N-octyl-pyrrolidone), DMEU (dimethyl-imidazolidinone), cyclohexanone, DMA (dimethylacetamide), NMF (N-methyl fo rm amide), bromobenz ene, chloroform, chlorobenz e ne, benzo nitri le, quinoline, benzyl ether, ethanol, isoprop yl alcohol, met ha nol, butanol, 2- ethoxyethanol, 2-butoxyethano l, 2 -me thoxypropano l, THF(t e trahydrofuran), ethylene glycol, pyridine, N -vinyl pyrrolidone, methyl ethyl ketone (butanone), alpha- t erpin e ol, formic acid, ethyl acetate and acrylonitrile. Original
The method for preparing graphene according to claim 1, wherein the expanded graphite in the feed solution is exfoliated while passing through a micro- channel under application of a she a r force, thereby preparing a graphene. Original
The method for preparing graphene according to claim 1, wherein the micro-channel has a diameter of 50 to 300 pm. Original
The met ho d for preparing graphe n e according to claim 1, wherein the feed solution is introduced in the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passed through the micro-channel. Original
The method for preparing graphene according to claim 1, wherein the step 2 is additionally repeated 2 to 10 times. Original
The method for preparing graphene according to claim 1, wherein the graphene prepared has an average size (lateral size) of 1 to 5 pm. Original
Canceled
Canceled
The method for preparing grap h ene according to claim 71, wherein the high -speed hom ogenization is carried out for 0.5 to 3 hours. Currently amended
Materials described outside the worked examples.
expanded graphite
dispersant
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
expanded graphite tap density | 0.01–0.5 g/cm3 | expanded graphite |
expanded graphite BET surface area | 5–50 m2/g |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,472,242Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
FIGS. 2 and 3, the graphene average size of the Examples was more narrowed as a whole as relative to the Comparative Example. In particular, the Comparative …
FIG. 4 shows the results of measuring the standard deviation of the size of graphene in each sample obtained in Comparative Example (
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
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 preparing graphene comprising: a step of subjecting a dispersion solution containing expanded graphite and a dispersant to high speed homogenization to prepare a feed solution (step 1); and a step of passing the feed solu t ion through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale (step 2), wherein the weight ratio of the expanded graphite and the dispersant is 2. 5 to 20, and the high-speed homogenization is carried out by stirring the dispersion solution at 3000 to 8000 rpm. Currently amended
The method for preparing graphene according to claim 1, wherein the expanded graphite ha s a tap density of 0.01 to 0.5 g/cm 3 and BET(surface area) of 5 to 50 m2 Original
The method for preparing graphene according to claim 1, wherein the d i spersant is pyrene-based low molec ul ar weight derivatives; ce llu losic polymers; cationic surfactants; anionic surfactants; gum arabic; n-dodecyl b-D- -mal toside; amphoteric surfactants; polyv inyl pyrro li done-based polym er s; polyethylene oxide-based polymers; ethylene oxide-propylene oxide copoly m ers; tannic acid; or a mixture of plural kinds of polyaromatic hydrocarbon oxides, which is a mixture containing polyaromatic hydrocarbon oxides having a molecular weig h t of 300 to 1000 in an amount of 60 wt% or more. Original
The method for preparing graphene according to claim 1, wherein the concentration of expanded graphite in the dispersion solution is 0.5 to 5% by weight. Original
The method for preparing graphene according to claim 1, wherein the solvent of the dispersion solu ti on is one or more selected from the group consisting of w ater, NMP (N-methyl-2-pyrrolidone), acetone, DMF (N,N-dimethylformamide), DMSO (dimethyl sulfoxide), CHP (cyclohexyl-pyrrolidinone), N₁₂P (N-dodecyl-pyrrolidone), benzyl b e nzoate, N₈ P (N-octyl-pyrrolidone), DMEU (dimethyl-imidazolidinone), cyclohexanone, DMA (dimethylacetamide), NMF (N-methyl fo rm amide), bromobenz ene, chloroform, chlorobenz e ne, benzo nitri le, quinoline, benzyl ether, ethanol, isoprop yl alcohol, met ha nol, butanol, 2- ethoxyethanol, 2-butoxyethano l, 2 -me thoxypropano l, THF(t e trahydrofuran), ethylene glycol, pyridine, N -vinyl pyrrolidone, methyl ethyl ketone (butanone), alpha- t erpin e ol, formic acid, ethyl acetate and acrylonitrile. Original
The method for preparing graphene according to claim 1, wherein the expanded graphite in the feed solution is exfoliated while passing through a micro- channel under application of a she a r force, thereby preparing a graphene. Original
The method for preparing graphene according to claim 1, wherein the micro-channel has a diameter of 50 to 300 pm. Original
The met ho d for preparing graphe n e according to claim 1, wherein the feed solution is introduced in the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passed through the micro-channel. Original
The method for preparing graphene according to claim 1, wherein the step 2 is additionally repeated 2 to 10 times. Original
The method for preparing graphene according to claim 1, wherein the graphene prepared has an average size (lateral size) of 1 to 5 pm. Original
Canceled
Canceled
The method for preparing grap h ene according to claim 71, wherein the high -speed hom ogenization is carried out for 0.5 to 3 hours. Currently amended
Materials described outside the worked examples.
expanded graphite
dispersant
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 shows a graph showing graphene concentrations of the respective samples obtained in Examples and Comparative Examples of 15 the present invention. Fig. …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
expanded graphite tap density | 0.01–0.5 g/cm3 | expanded graphite |
expanded graphite BET surface area | 5–50 m2/g |
Related documents with shared materials, methods, properties, or citations.
solvent
graphene
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
graphene average lateral size | 1–5 um | graphene |
Duration | 0.5–3 hours | — |
Duration | ≤ 0.5 hour | — |
Pressure | 500–3000 bar | — |
solvent
graphene
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
graphene average lateral size | 1–5 um | graphene |
Duration | 0.5–3 hours | — |
Duration | ≤ 0.5 hour | — |
Pressure | 500–3000 bar | — |
solvent
graphene
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
graphene average lateral size | 1–5 um | graphene |
Duration | 0.5–3 hours | — |
Duration | ≤ 0.5 hour | — |
Pressure | 500–3000 bar | — |
solvent
graphene
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 5 shows SEM images and TEM images of the graphene 25 surface in each sample obtained in Example of the present invention. Herein, (a) shows SEM image of …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
FIG. 6 shows SEM images and TEM images of the surface of 30 graphene in each sample obtained in Comparative Example of the 11 present invention. Herein, (e) …
graphene average lateral size | 1–5 um | graphene |
Duration | 0.5–3 hours | — |
Duration | ≤ 0.5 hour | — |
Pressure | 500–3000 bar | — |