Patent
US 8,414,799METHOD FOR MANUFACTURING GRAPHENE
Nen-Wen Pu
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 8,414,799Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a perspective view of experimental equipment in Example 1 of the present invention;
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Application No. 12/818,940 Attorney Docket No. 5200/0 1 17PUS 1 Response to Office Action dated 23 Jul 2012 Page 2 of 5 AMENDMENTS TO THE CLAIMS 1. A method for manufacturing graphene, comprising the following steps: putting an-erganic-so lvent -, a surfactant, or a -e mbinati en the reef and graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank to allow 4hee rganie selvent the surfactant, or the eombinatin theot to dissolve in the supercritical fluid and to permeate into the graphite material; removing the supercritical fluid by depressurization to form graphene; and introducing the graphene into an aqueous solution at the time of removing the supercritical fluid by depressurization when the graphite material is Mixed wit the sfactaft
The method as claimed in claim 1, wherein a ratio of the graphite material to the surfactant is in a range from 2: 1 to 1: 10 by weight.
The method as claimed in claim 1, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm.
The method as claimed in claim 1, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 1, wherein rate of the depressurization of the super c ritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 1, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 1, wherein the surfactant is an anionic surfactant, a cationic surfactant, a nonionic surfactant, or a combination thereof. Application No. 12/818,940 Attorney Docket No. 5200/0117PUS 1 Response to Office Action dated 23 Jul 2012 Page 3 of 5 10. A method for manufacturing graphene, comprising the following steps: putting graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank; and removing the supercritical fluid by depressurization to form graphene, and simultaneously to introduce the graphene into an organic solvent, a surfactant-containing organic solvent, or a surfactant-containing aqueous solution.
2.
8.
The method as claimed in claim 10, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm
The method as claimed in claim 10, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 10, wherein rate of the depressurization of the supercritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 10, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 10, wherein alcohol, C₂ -6 ester, C3. 7 ketone, and C5. 9 the organic solvent is selected from C 1. alkane, or a combination thereof.
Materials described outside the worked examples.
graphene
graphite material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 900–86400 s | — |
Related documents with shared materials, methods, properties, or citations.
POROUS GRAPHENE, GRAPHENE QUANTUM DOT AND GREEN PREPARATION METHOD FOR POROUS GRAPHENE AND GRAPHENE QUANTUM DOT
CARBON FIBER COMPOSITION INCLUDING GRAPHENE NANO-POWDER AND FABRICATION METHOD FOR CARBON FIBER USING THE SAME
Patent
Atlas literature
Patent
US 8,414,799Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a perspective view of experimental equipment in Example 1 of the present invention;
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Application No. 12/818,940 Attorney Docket No. 5200/0 1 17PUS 1 Response to Office Action dated 23 Jul 2012 Page 2 of 5 AMENDMENTS TO THE CLAIMS 1. A method for manufacturing graphene, comprising the following steps: putting an-erganic-so lvent -, a surfactant, or a -e mbinati en the reef and graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank to allow 4hee rganie selvent the surfactant, or the eombinatin theot to dissolve in the supercritical fluid and to permeate into the graphite material; removing the supercritical fluid by depressurization to form graphene; and introducing the graphene into an aqueous solution at the time of removing the supercritical fluid by depressurization when the graphite material is Mixed wit the sfactaft
The method as claimed in claim 1, wherein a ratio of the graphite material to the surfactant is in a range from 2: 1 to 1: 10 by weight.
The method as claimed in claim 1, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm.
The method as claimed in claim 1, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 1, wherein rate of the depressurization of the super c ritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 1, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 1, wherein the surfactant is an anionic surfactant, a cationic surfactant, a nonionic surfactant, or a combination thereof. Application No. 12/818,940 Attorney Docket No. 5200/0117PUS 1 Response to Office Action dated 23 Jul 2012 Page 3 of 5 10. A method for manufacturing graphene, comprising the following steps: putting graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank; and removing the supercritical fluid by depressurization to form graphene, and simultaneously to introduce the graphene into an organic solvent, a surfactant-containing organic solvent, or a surfactant-containing aqueous solution.
2.
8.
The method as claimed in claim 10, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm
The method as claimed in claim 10, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 10, wherein rate of the depressurization of the supercritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 10, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 10, wherein alcohol, C₂ -6 ester, C3. 7 ketone, and C5. 9 the organic solvent is selected from C 1. alkane, or a combination thereof.
Materials described outside the worked examples.
graphene
graphite material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 900–86400 s | — |
Related documents with shared materials, methods, properties, or citations.
POROUS GRAPHENE, GRAPHENE QUANTUM DOT AND GREEN PREPARATION METHOD FOR POROUS GRAPHENE AND GRAPHENE QUANTUM DOT
CARBON FIBER COMPOSITION INCLUDING GRAPHENE NANO-POWDER AND FABRICATION METHOD FOR CARBON FIBER USING THE SAME
Patent
Atlas literature
Patent
US 8,414,799Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a perspective view of experimental equipment in Example 1 of the present invention;
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Application No. 12/818,940 Attorney Docket No. 5200/0 1 17PUS 1 Response to Office Action dated 23 Jul 2012 Page 2 of 5 AMENDMENTS TO THE CLAIMS 1. A method for manufacturing graphene, comprising the following steps: putting an-erganic-so lvent -, a surfactant, or a -e mbinati en the reef and graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank to allow 4hee rganie selvent the surfactant, or the eombinatin theot to dissolve in the supercritical fluid and to permeate into the graphite material; removing the supercritical fluid by depressurization to form graphene; and introducing the graphene into an aqueous solution at the time of removing the supercritical fluid by depressurization when the graphite material is Mixed wit the sfactaft
The method as claimed in claim 1, wherein a ratio of the graphite material to the surfactant is in a range from 2: 1 to 1: 10 by weight.
The method as claimed in claim 1, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm.
The method as claimed in claim 1, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 1, wherein rate of the depressurization of the super c ritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 1, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 1, wherein the surfactant is an anionic surfactant, a cationic surfactant, a nonionic surfactant, or a combination thereof. Application No. 12/818,940 Attorney Docket No. 5200/0117PUS 1 Response to Office Action dated 23 Jul 2012 Page 3 of 5 10. A method for manufacturing graphene, comprising the following steps: putting graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank; and removing the supercritical fluid by depressurization to form graphene, and simultaneously to introduce the graphene into an organic solvent, a surfactant-containing organic solvent, or a surfactant-containing aqueous solution.
2.
8.
The method as claimed in claim 10, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm
The method as claimed in claim 10, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 10, wherein rate of the depressurization of the supercritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 10, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 10, wherein alcohol, C₂ -6 ester, C3. 7 ketone, and C5. 9 the organic solvent is selected from C 1. alkane, or a combination thereof.
Materials described outside the worked examples.
graphene
graphite material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 900–86400 s | — |
Related documents with shared materials, methods, properties, or citations.
POROUS GRAPHENE, GRAPHENE QUANTUM DOT AND GREEN PREPARATION METHOD FOR POROUS GRAPHENE AND GRAPHENE QUANTUM DOT
CARBON FIBER COMPOSITION INCLUDING GRAPHENE NANO-POWDER AND FABRICATION METHOD FOR CARBON FIBER USING THE SAME
Patent
Atlas literature
Patent
US 8,414,799Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a perspective view of experimental equipment in Example 1 of the present invention;
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Application No. 12/818,940 Attorney Docket No. 5200/0 1 17PUS 1 Response to Office Action dated 23 Jul 2012 Page 2 of 5 AMENDMENTS TO THE CLAIMS 1. A method for manufacturing graphene, comprising the following steps: putting an-erganic-so lvent -, a surfactant, or a -e mbinati en the reef and graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank to allow 4hee rganie selvent the surfactant, or the eombinatin theot to dissolve in the supercritical fluid and to permeate into the graphite material; removing the supercritical fluid by depressurization to form graphene; and introducing the graphene into an aqueous solution at the time of removing the supercritical fluid by depressurization when the graphite material is Mixed wit the sfactaft
The method as claimed in claim 1, wherein a ratio of the graphite material to the surfactant is in a range from 2: 1 to 1: 10 by weight.
The method as claimed in claim 1, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm.
The method as claimed in claim 1, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 1, wherein rate of the depressurization of the super c ritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 1, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 1, wherein the surfactant is an anionic surfactant, a cationic surfactant, a nonionic surfactant, or a combination thereof. Application No. 12/818,940 Attorney Docket No. 5200/0117PUS 1 Response to Office Action dated 23 Jul 2012 Page 3 of 5 10. A method for manufacturing graphene, comprising the following steps: putting graphite material in a reaction tank, and introducing a supercritical fluid in the reaction tank; and removing the supercritical fluid by depressurization to form graphene, and simultaneously to introduce the graphene into an organic solvent, a surfactant-containing organic solvent, or a surfactant-containing aqueous solution.
2.
8.
The method as claimed in claim 10, wherein the graphite material is graphite powder of which particle size is in a range from 20 to 100 pm
The method as claimed in claim 10, wherein retention time of the supercritical fluid introduced in the reaction tank is in a range from 15 minutes to 24 hours.
The method as claimed in claim 10, wherein rate of the depressurization of the supercritical fluid is in a range from 0.1 to 5 mL/s.
The method as claimed in claim 10, wherein the supercritical fluid is removed within 5 seconds to within 5 hours.
The method as claimed in claim 10, wherein alcohol, C₂ -6 ester, C3. 7 ketone, and C5. 9 the organic solvent is selected from C 1. alkane, or a combination thereof.
Materials described outside the worked examples.
graphene
graphite material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 900–86400 s | — |
Related documents with shared materials, methods, properties, or citations.
POROUS GRAPHENE, GRAPHENE QUANTUM DOT AND GREEN PREPARATION METHOD FOR POROUS GRAPHENE AND GRAPHENE QUANTUM DOT
CARBON FIBER COMPOSITION INCLUDING GRAPHENE NANO-POWDER AND FABRICATION METHOD FOR CARBON FIBER USING THE SAME
surfactant
supercritical fluid
organic solvent
aqueous solution
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
surfactant
supercritical fluid
organic solvent
aqueous solution
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
surfactant
supercritical fluid
organic solvent
aqueous solution
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …
surfactant
supercritical fluid
organic solvent
aqueous solution
FIG. 2 shows transmission electron microscopic pictures of graphene given from Example 1 of the present invention, in which (a) shows graphene prepared at the …
FIG. 3 shows atomic force microscopic pictures of graphene obtained from Example 1 of the present invention, in which the upper picture shows an atomic force …
FIG. 4 shows transmission electron microscopic pictures of 5 graphene given from Example 2 of the present invention, in which (a) sho w s graphene prepared at …
FIG. 5 shows transmission electron microscopic pictures of graphene given from Example 3 of the present invention, in which (a) 10 shows graphene prepared in …
FIG. 6 shows transmission electron microscopic pictures of graphene given from Example 4 of the present invention, in which (a) shows graphene prepared at the …