Patent
US 8,968,695A METHOD OF PRODUCING NANO-SIZE GRAPHENE-BASED MATERIAL AND AN EQUIPMENT FOR PRODUCING THE SAME
Young Jin Kwon, Su Bong Kim, Cheol Min Shin, Byoung Kyu Ji et al.
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 8,968,695Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic flow chart showing an embodiment for equipment of producing graphitic oxide according to the present invention. [53]
Figure 2 is a partial disintegrated perspective view of the micro-reactor in the equipment shown in
Figure3 is a schematic flow chart showing an embodiment for equipment of producing nano-size graphene-based material according to the present invention. Best Mode for Carrying out the Invention [55] Hereinafter, exemplary embodiments of the invention will be described in detail with reference to the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A producing method for a graphitic oxide, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving KMn O 4 in sulfuric acid; 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; SVG 13389868.01-14-2015.I₄X₅₅SOWPXXIFW3.CLM6861373.20.296.1608.2234.1687.svg 0.263 6.46 Graph Black and white KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); and 9) a step of drying the reaction mixture after the step 8), wherein the steps 1) to 6) are continuously carried out.
The producing method of claim 1, further comprising a step of filtering the reaction mixture after the step 6).
The producing method of claim 1, wherein the step 7) is carried out for the reaction mixture discharged from the outlet of the lengthy micro-channel by a separate mixing tank. 2
The producing method of claim 1, wherein the step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro-channel is the next step of the step of forcing the graphite sulfuric slurry into the inlet of the lengthy micro-channel.
A producing method for a nano-size graphene-based material, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving K MnO 4 in sulfuric acid; 3 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; 6) a step of sustaining the-a reaction mixture of the graphite sulfuric slurry and the KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); 9) a step of drying the reaction mixture after the step 8) to obtain graphitic oxide; 10) a step of pouring the graphitic oxide obtained by the step 9) int o a vertical fluidized furnace in reducing atmosphere; 11) a step of expanding the f ailing- graphitic oxide falling in the vertical fluidized furnace; 12) a step of collecting a nano-size graphene-based material produced and carried on ascending flow near t he-a_ ceiling of the vertical fluidized furnace; and 13) a step of separating and storing the nano-size graphene-based material, wherein the step 1) to the step 6) and the step 10) to the step 13) are continuously carried out.
The producing method of claim 7, wherein the nano-size graphene-based material has thickness of less than 100 nm, and has a surface area ranging from 300 to 3000 m2/g and residual oxygen of less than 1.0 wt%.
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Materials described outside the worked examples.
graphite flake
sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
nano-size graphene-based material thickness less than 100 nm | ≤ 100 nm | nano-size graphene-based material |
nano-size graphene-based material surface area 300-3000 m2/g | 300–3000 m2/g |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR MANUFACTURING STACK OF GRAPHENE AND CARBON NANOTUBE, ELECTRODE MATERIAL INCLUDING STACK OF GRAPHENE AND CARBON NANOTUBE, AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE SAME
GRAPHENE, METHOD AND APPARATUS FOR PREPARING GRAPHENE
Patent
Atlas literature
Patent
US 8,968,695Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic flow chart showing an embodiment for equipment of producing graphitic oxide according to the present invention. [53]
Figure 2 is a partial disintegrated perspective view of the micro-reactor in the equipment shown in
Figure3 is a schematic flow chart showing an embodiment for equipment of producing nano-size graphene-based material according to the present invention. Best Mode for Carrying out the Invention [55] Hereinafter, exemplary embodiments of the invention will be described in detail with reference to the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A producing method for a graphitic oxide, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving KMn O 4 in sulfuric acid; 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; SVG 13389868.01-14-2015.I₄X₅₅SOWPXXIFW3.CLM6861373.20.296.1608.2234.1687.svg 0.263 6.46 Graph Black and white KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); and 9) a step of drying the reaction mixture after the step 8), wherein the steps 1) to 6) are continuously carried out.
The producing method of claim 1, further comprising a step of filtering the reaction mixture after the step 6).
The producing method of claim 1, wherein the step 7) is carried out for the reaction mixture discharged from the outlet of the lengthy micro-channel by a separate mixing tank. 2
The producing method of claim 1, wherein the step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro-channel is the next step of the step of forcing the graphite sulfuric slurry into the inlet of the lengthy micro-channel.
A producing method for a nano-size graphene-based material, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving K MnO 4 in sulfuric acid; 3 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; 6) a step of sustaining the-a reaction mixture of the graphite sulfuric slurry and the KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); 9) a step of drying the reaction mixture after the step 8) to obtain graphitic oxide; 10) a step of pouring the graphitic oxide obtained by the step 9) int o a vertical fluidized furnace in reducing atmosphere; 11) a step of expanding the f ailing- graphitic oxide falling in the vertical fluidized furnace; 12) a step of collecting a nano-size graphene-based material produced and carried on ascending flow near t he-a_ ceiling of the vertical fluidized furnace; and 13) a step of separating and storing the nano-size graphene-based material, wherein the step 1) to the step 6) and the step 10) to the step 13) are continuously carried out.
The producing method of claim 7, wherein the nano-size graphene-based material has thickness of less than 100 nm, and has a surface area ranging from 300 to 3000 m2/g and residual oxygen of less than 1.0 wt%.
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphite flake
sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
nano-size graphene-based material thickness less than 100 nm | ≤ 100 nm | nano-size graphene-based material |
nano-size graphene-based material surface area 300-3000 m2/g | 300–3000 m2/g |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR MANUFACTURING STACK OF GRAPHENE AND CARBON NANOTUBE, ELECTRODE MATERIAL INCLUDING STACK OF GRAPHENE AND CARBON NANOTUBE, AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE SAME
GRAPHENE, METHOD AND APPARATUS FOR PREPARING GRAPHENE
Patent
Atlas literature
Patent
US 8,968,695Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic flow chart showing an embodiment for equipment of producing graphitic oxide according to the present invention. [53]
Figure 2 is a partial disintegrated perspective view of the micro-reactor in the equipment shown in
Figure3 is a schematic flow chart showing an embodiment for equipment of producing nano-size graphene-based material according to the present invention. Best Mode for Carrying out the Invention [55] Hereinafter, exemplary embodiments of the invention will be described in detail with reference to the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A producing method for a graphitic oxide, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving KMn O 4 in sulfuric acid; 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; SVG 13389868.01-14-2015.I₄X₅₅SOWPXXIFW3.CLM6861373.20.296.1608.2234.1687.svg 0.263 6.46 Graph Black and white KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); and 9) a step of drying the reaction mixture after the step 8), wherein the steps 1) to 6) are continuously carried out.
The producing method of claim 1, further comprising a step of filtering the reaction mixture after the step 6).
The producing method of claim 1, wherein the step 7) is carried out for the reaction mixture discharged from the outlet of the lengthy micro-channel by a separate mixing tank. 2
The producing method of claim 1, wherein the step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro-channel is the next step of the step of forcing the graphite sulfuric slurry into the inlet of the lengthy micro-channel.
A producing method for a nano-size graphene-based material, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving K MnO 4 in sulfuric acid; 3 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; 6) a step of sustaining the-a reaction mixture of the graphite sulfuric slurry and the KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); 9) a step of drying the reaction mixture after the step 8) to obtain graphitic oxide; 10) a step of pouring the graphitic oxide obtained by the step 9) int o a vertical fluidized furnace in reducing atmosphere; 11) a step of expanding the f ailing- graphitic oxide falling in the vertical fluidized furnace; 12) a step of collecting a nano-size graphene-based material produced and carried on ascending flow near t he-a_ ceiling of the vertical fluidized furnace; and 13) a step of separating and storing the nano-size graphene-based material, wherein the step 1) to the step 6) and the step 10) to the step 13) are continuously carried out.
The producing method of claim 7, wherein the nano-size graphene-based material has thickness of less than 100 nm, and has a surface area ranging from 300 to 3000 m2/g and residual oxygen of less than 1.0 wt%.
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphite flake
sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
nano-size graphene-based material thickness less than 100 nm | ≤ 100 nm | nano-size graphene-based material |
nano-size graphene-based material surface area 300-3000 m2/g | 300–3000 m2/g |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR MANUFACTURING STACK OF GRAPHENE AND CARBON NANOTUBE, ELECTRODE MATERIAL INCLUDING STACK OF GRAPHENE AND CARBON NANOTUBE, AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE SAME
GRAPHENE, METHOD AND APPARATUS FOR PREPARING GRAPHENE
Patent
Atlas literature
Patent
US 8,968,695Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic flow chart showing an embodiment for equipment of producing graphitic oxide according to the present invention. [53]
Figure 2 is a partial disintegrated perspective view of the micro-reactor in the equipment shown in
Figure3 is a schematic flow chart showing an embodiment for equipment of producing nano-size graphene-based material according to the present invention. Best Mode for Carrying out the Invention [55] Hereinafter, exemplary embodiments of the invention will be described in detail with reference to the …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A producing method for a graphitic oxide, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving KMn O 4 in sulfuric acid; 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; SVG 13389868.01-14-2015.I₄X₅₅SOWPXXIFW3.CLM6861373.20.296.1608.2234.1687.svg 0.263 6.46 Graph Black and white KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); and 9) a step of drying the reaction mixture after the step 8), wherein the steps 1) to 6) are continuously carried out.
The producing method of claim 1, further comprising a step of filtering the reaction mixture after the step 6).
The producing method of claim 1, wherein the step 7) is carried out for the reaction mixture discharged from the outlet of the lengthy micro-channel by a separate mixing tank. 2
The producing method of claim 1, wherein the step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro-channel is the next step of the step of forcing the graphite sulfuric slurry into the inlet of the lengthy micro-channel.
A producing method for a nano-size graphene-based material, comprising: 1) a step of preparing a graphite sulfuric slurry by mixing graphite flake with sulfuric acid; 2) a step of preparing a KMn O 4 sulfuric solution by dissolving K MnO 4 in sulfuric acid; 3 3) a step of preparing an aqueous solution of hydrogen peroxide; 4) a step of forcing the graphite sulfuric slurry into a lengthy micro-channel having an inlet, a reacting portion and an outlet; 5) a step of forcing the KMn O 4 sulfuric solution into the inlet of the lengthy micro- channel; 6) a step of sustaining the-a reaction mixture of the graphite sulfuric slurry and the KMn O 4 sulfuric solution in the micro-channel at a predetermined temperatures; 7) a step of putting the aqueous solution of hydrogen peroxide to the reaction mixture after the step 6); 8) a step of washing the reaction mixture after the step 7); 9) a step of drying the reaction mixture after the step 8) to obtain graphitic oxide; 10) a step of pouring the graphitic oxide obtained by the step 9) int o a vertical fluidized furnace in reducing atmosphere; 11) a step of expanding the f ailing- graphitic oxide falling in the vertical fluidized furnace; 12) a step of collecting a nano-size graphene-based material produced and carried on ascending flow near t he-a_ ceiling of the vertical fluidized furnace; and 13) a step of separating and storing the nano-size graphene-based material, wherein the step 1) to the step 6) and the step 10) to the step 13) are continuously carried out.
The producing method of claim 7, wherein the nano-size graphene-based material has thickness of less than 100 nm, and has a surface area ranging from 300 to 3000 m2/g and residual oxygen of less than 1.0 wt%.
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphite flake
sulfuric acid
H₂SO₄
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
nano-size graphene-based material thickness less than 100 nm | ≤ 100 nm | nano-size graphene-based material |
nano-size graphene-based material surface area 300-3000 m2/g | 300–3000 m2/g |
Related documents with shared materials, methods, properties, or citations.
METHOD FOR MANUFACTURING STACK OF GRAPHENE AND CARBON NANOTUBE, ELECTRODE MATERIAL INCLUDING STACK OF GRAPHENE AND CARBON NANOTUBE, AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE SAME
GRAPHENE, METHOD AND APPARATUS FOR PREPARING GRAPHENE
KMnO₄
aqueous solution of hydrogen peroxide
H₂O₂
graphitic oxide
nano-size graphene-based material
nano-size graphene-based material |
nano-size graphene-based material residual oxygen less than 1.0 wt% | ≤ 1 wt% | nano-size graphene-based material |
Thickness | ≤ 1 nm | — |
KMnO₄
aqueous solution of hydrogen peroxide
H₂O₂
graphitic oxide
nano-size graphene-based material
nano-size graphene-based material |
nano-size graphene-based material residual oxygen less than 1.0 wt% | ≤ 1 wt% | nano-size graphene-based material |
Thickness | ≤ 1 nm | — |
KMnO₄
aqueous solution of hydrogen peroxide
H₂O₂
graphitic oxide
nano-size graphene-based material
nano-size graphene-based material |
nano-size graphene-based material residual oxygen less than 1.0 wt% | ≤ 1 wt% | nano-size graphene-based material |
Thickness | ≤ 1 nm | — |
KMnO₄
aqueous solution of hydrogen peroxide
H₂O₂
graphitic oxide
nano-size graphene-based material
nano-size graphene-based material |
nano-size graphene-based material residual oxygen less than 1.0 wt% | ≤ 1 wt% | nano-size graphene-based material |
Thickness | ≤ 1 nm | — |