Patent
US 10,472,243INDUSTRIAL PREPARATION METHOD OF LARGE-SIZED GRAPHENE
Chaoyang Feng
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,472,243Patent drawings and their descriptions. Click a drawing to enlarge it.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
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 industrially manufacturing large-size graphene comprising following steps: (1) mixing graphite and concentrated sulfuric acid to obtain a mixed liquid, and ultrasonically treating the mixed liquid to obtain an upper layer of graphene and a lower layer of concentrated sulfuric acid liquid under condition that a chemical intercalation and a mechanical stripping were performed simultaneously; (2) separating the upper layer of graphene and the lower layer of concentrated sulfuric acid liquid; (3) the graphene separated in the step (2) being washed with water, filtered, and dried to obtain a large-size graphene. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, further comprising a step (4) of returning the concentrated sulfuric acid liquid separated in step (2) to step (1) for recycling. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass to volume ratio of the graphite relative to the concentrated sulfuric acid of the mixed liquid is 1:5 0~1: 500 g/mL in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass concentration of the concentrated sulfuric acid is 75% ~ 98%. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the graphite is selected from at least one of natural graphite, expandable graphite, highly oriented pyrolytic graphite and pyrolytic graphite. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the ultrasonic treatment time is 1 0~20 hours and the ultrasonic power is 15 0~300 W in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein after the ultrasonic treatment, the method further comprises a step of standing, and the standing time is 3 0~60 minutes. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the washing process of step (3) comprises steps of washing with 6 0~90 C water for 2 ~4 times, and then washing with 1 0~30 C water for 2 ~ 3 times. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the drying temperature of step (3) is 1 00~1200 C, and the drying time is 6 ~1 0 hours. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the length of the large-size graphene is 10~30p m, and the width of the large-size graphene is 1 0~30pm. Original
Materials described outside the worked examples.
graphite
concentrated sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
length of large-size graphene | 10–30 | large-size graphene |
width of large-size graphene | 10–30 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,472,243Patent drawings and their descriptions. Click a drawing to enlarge it.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
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 industrially manufacturing large-size graphene comprising following steps: (1) mixing graphite and concentrated sulfuric acid to obtain a mixed liquid, and ultrasonically treating the mixed liquid to obtain an upper layer of graphene and a lower layer of concentrated sulfuric acid liquid under condition that a chemical intercalation and a mechanical stripping were performed simultaneously; (2) separating the upper layer of graphene and the lower layer of concentrated sulfuric acid liquid; (3) the graphene separated in the step (2) being washed with water, filtered, and dried to obtain a large-size graphene. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, further comprising a step (4) of returning the concentrated sulfuric acid liquid separated in step (2) to step (1) for recycling. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass to volume ratio of the graphite relative to the concentrated sulfuric acid of the mixed liquid is 1:5 0~1: 500 g/mL in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass concentration of the concentrated sulfuric acid is 75% ~ 98%. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the graphite is selected from at least one of natural graphite, expandable graphite, highly oriented pyrolytic graphite and pyrolytic graphite. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the ultrasonic treatment time is 1 0~20 hours and the ultrasonic power is 15 0~300 W in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein after the ultrasonic treatment, the method further comprises a step of standing, and the standing time is 3 0~60 minutes. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the washing process of step (3) comprises steps of washing with 6 0~90 C water for 2 ~4 times, and then washing with 1 0~30 C water for 2 ~ 3 times. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the drying temperature of step (3) is 1 00~1200 C, and the drying time is 6 ~1 0 hours. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the length of the large-size graphene is 10~30p m, and the width of the large-size graphene is 1 0~30pm. Original
Materials described outside the worked examples.
graphite
concentrated sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
length of large-size graphene | 10–30 | large-size graphene |
width of large-size graphene | 10–30 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,472,243Patent drawings and their descriptions. Click a drawing to enlarge it.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
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 industrially manufacturing large-size graphene comprising following steps: (1) mixing graphite and concentrated sulfuric acid to obtain a mixed liquid, and ultrasonically treating the mixed liquid to obtain an upper layer of graphene and a lower layer of concentrated sulfuric acid liquid under condition that a chemical intercalation and a mechanical stripping were performed simultaneously; (2) separating the upper layer of graphene and the lower layer of concentrated sulfuric acid liquid; (3) the graphene separated in the step (2) being washed with water, filtered, and dried to obtain a large-size graphene. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, further comprising a step (4) of returning the concentrated sulfuric acid liquid separated in step (2) to step (1) for recycling. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass to volume ratio of the graphite relative to the concentrated sulfuric acid of the mixed liquid is 1:5 0~1: 500 g/mL in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass concentration of the concentrated sulfuric acid is 75% ~ 98%. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the graphite is selected from at least one of natural graphite, expandable graphite, highly oriented pyrolytic graphite and pyrolytic graphite. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the ultrasonic treatment time is 1 0~20 hours and the ultrasonic power is 15 0~300 W in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein after the ultrasonic treatment, the method further comprises a step of standing, and the standing time is 3 0~60 minutes. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the washing process of step (3) comprises steps of washing with 6 0~90 C water for 2 ~4 times, and then washing with 1 0~30 C water for 2 ~ 3 times. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the drying temperature of step (3) is 1 00~1200 C, and the drying time is 6 ~1 0 hours. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the length of the large-size graphene is 10~30p m, and the width of the large-size graphene is 1 0~30pm. Original
Materials described outside the worked examples.
graphite
concentrated sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
length of large-size graphene | 10–30 | large-size graphene |
width of large-size graphene | 10–30 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,472,243Patent drawings and their descriptions. Click a drawing to enlarge it.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
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 industrially manufacturing large-size graphene comprising following steps: (1) mixing graphite and concentrated sulfuric acid to obtain a mixed liquid, and ultrasonically treating the mixed liquid to obtain an upper layer of graphene and a lower layer of concentrated sulfuric acid liquid under condition that a chemical intercalation and a mechanical stripping were performed simultaneously; (2) separating the upper layer of graphene and the lower layer of concentrated sulfuric acid liquid; (3) the graphene separated in the step (2) being washed with water, filtered, and dried to obtain a large-size graphene. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, further comprising a step (4) of returning the concentrated sulfuric acid liquid separated in step (2) to step (1) for recycling. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass to volume ratio of the graphite relative to the concentrated sulfuric acid of the mixed liquid is 1:5 0~1: 500 g/mL in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the mass concentration of the concentrated sulfuric acid is 75% ~ 98%. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the graphite is selected from at least one of natural graphite, expandable graphite, highly oriented pyrolytic graphite and pyrolytic graphite. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the ultrasonic treatment time is 1 0~20 hours and the ultrasonic power is 15 0~300 W in the step (1). Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein after the ultrasonic treatment, the method further comprises a step of standing, and the standing time is 3 0~60 minutes. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the washing process of step (3) comprises steps of washing with 6 0~90 C water for 2 ~4 times, and then washing with 1 0~30 C water for 2 ~ 3 times. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the drying temperature of step (3) is 1 00~1200 C, and the drying time is 6 ~1 0 hours. Original
The method for industrially manufacturing large-size graphene as recited in claim 1, wherein the length of the large-size graphene is 10~30p m, and the width of the large-size graphene is 1 0~30pm. Original
Materials described outside the worked examples.
graphite
concentrated sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIGS. 1-2 respectively show an optical micrograph and a scanning electron microscope (SEM) of a large-size graphene manufactured according to the first …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
length of large-size graphene | 10–30 | large-size graphene |
width of large-size graphene | 10–30 |
Related documents with shared materials, methods, properties, or citations.
large-size graphene
natural graphite
expandable graphite
highly oriented pyrolytic graphite
pyrolytic graphite
large-size graphene
natural graphite
expandable graphite
highly oriented pyrolytic graphite
pyrolytic graphite
large-size graphene
natural graphite
expandable graphite
highly oriented pyrolytic graphite
pyrolytic graphite
large-size graphene
natural graphite
expandable graphite
highly oriented pyrolytic graphite
pyrolytic graphite