Patent
US 9,611,149METHOD AND APPARATUS FOR MODIFY I NG GRAPHENE
Seung Hoe DO
US
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Patent
Atlas literature
Patent
US 9,611,149Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the apparatus for modifying the graphene according to an exemplary embodiment of the present invention may include a carbon dioxide storing bath 11 …
FIG. 2 shows XRD measurement result of graphenes obtained by Example 1 and Comparative Example 1 of the present invention.
FIG. 3 is a schematic diagram simply showing a state in which the graphene is modified according to an exemplary embodiment of the present invention. Referring …
FIG. 4 shows scanning electron microscope (SEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. 5
FIG. 5 shows transmission electron microscope (TEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. …
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 modifying a graphene comprising the steps of: injecting carbon dioxide in a liquid state into a reactor having the graphene; modifying the graphene by temperature-raising and pressure-raising carbon dioxide to 20 to 50 ' C and 73 to 200 atm, respectively; pressure-releasing and cooling the modified graphene; and recovering the pressure-released graphene by a recovering bath filled with deionized water s wherein the steps of temperature-raising and pressure-raising of the carbon dioxide, and pressure-releasinq and cooling of the modified graphene are repeated at least two times.
The method of claim 1, wherein the graphene is prepared from at least one kind selected from the group consisting of graphene platelet, graphene nanoplatelet, graphene oxide, graphite, graphite oxide, graphite nanoplatelet, expanded graphite, diamond, fullerene, carbon black, activated carbon, charcoal, carbon nanoribbon, carbon nanowire, carbon nanoclay, carbon nanotube, pitch carbon fiber, carbon nanofiber, carbon glass fiber, and asphalt.
The method of claim 1, wherein the temperature-raising and pressure-raising of the carbon dioxide is performed in the presence of surfactant.
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a temperature of 20 to 30 C. Page 2 of 6 Application Number 14/907,862 Attorney Docket LPP₂₀₁₆₀₁₀₀US Amendment Filed 09 January 2017 Reply to Office Action of 07 October 2016
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a pressure of 1 to 10 atm.
The method of claim 1, further comprising: recovering the carbon dioxide discharged from the pressure-releasing and cooling of the modified graphene so that the carbon dioxide is reused further comprising a step of recovering a discharged carbon dioxide from the step of pressure-releasing and cooling the modified graphene.
canceled
canceled
An apparatus for modifying a graphene comprising: a first modification reactor performing a first modification reaction of the graphene using carbon dioxide at a temperature of 20 to 50 C and a pressure of 73 to 200 atm; a carbon dioxide feeding pump feeding carbon dioxide into the first modification reactor; a raw material injection apparatus injecting the graphene into the first modification reactor; a first pressure-releaser connected to a rear end of the first modification reactor; and a recovering bath connected to a rear end of the first pressure-releaser and recovering the graphene in a state in which deionized water is filled into the recovering bath. Page 3 of 6
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Graphene modification using subcritical or supercritical CO₂ at 20-50°C and 73-200 atm, with pressure-release/cooling cycle repeated, and graphene recovered in a deionized water bath. XRD, SEM, and TEM characterization performed on the modified graphene.
2 materials1 process step
Second example of graphene modification using the described supercritical/subcritical CO₂ process. SEM and TEM images compared to Example 1 and Comparative Example 1.
1 material
Comparative graphene sample for XRD, SEM, and TEM comparison against Examples 1 and 2.
Layer stacks claimed or described, ordered top of device to substrate.
graphene modification apparatus
No layer stack recorded.
Materials described outside the worked examples.
graphene precursor materials
surfactant
deionized water
H₂O
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 73–200 atm | — |
Pressure | 80–200 atm |
Patent
Atlas literature
Patent
US 9,611,149Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the apparatus for modifying the graphene according to an exemplary embodiment of the present invention may include a carbon dioxide storing bath 11 …
FIG. 2 shows XRD measurement result of graphenes obtained by Example 1 and Comparative Example 1 of the present invention.
FIG. 3 is a schematic diagram simply showing a state in which the graphene is modified according to an exemplary embodiment of the present invention. Referring …
FIG. 4 shows scanning electron microscope (SEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. 5
FIG. 5 shows transmission electron microscope (TEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. …
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 modifying a graphene comprising the steps of: injecting carbon dioxide in a liquid state into a reactor having the graphene; modifying the graphene by temperature-raising and pressure-raising carbon dioxide to 20 to 50 ' C and 73 to 200 atm, respectively; pressure-releasing and cooling the modified graphene; and recovering the pressure-released graphene by a recovering bath filled with deionized water s wherein the steps of temperature-raising and pressure-raising of the carbon dioxide, and pressure-releasinq and cooling of the modified graphene are repeated at least two times.
The method of claim 1, wherein the graphene is prepared from at least one kind selected from the group consisting of graphene platelet, graphene nanoplatelet, graphene oxide, graphite, graphite oxide, graphite nanoplatelet, expanded graphite, diamond, fullerene, carbon black, activated carbon, charcoal, carbon nanoribbon, carbon nanowire, carbon nanoclay, carbon nanotube, pitch carbon fiber, carbon nanofiber, carbon glass fiber, and asphalt.
The method of claim 1, wherein the temperature-raising and pressure-raising of the carbon dioxide is performed in the presence of surfactant.
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a temperature of 20 to 30 C. Page 2 of 6 Application Number 14/907,862 Attorney Docket LPP₂₀₁₆₀₁₀₀US Amendment Filed 09 January 2017 Reply to Office Action of 07 October 2016
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a pressure of 1 to 10 atm.
The method of claim 1, further comprising: recovering the carbon dioxide discharged from the pressure-releasing and cooling of the modified graphene so that the carbon dioxide is reused further comprising a step of recovering a discharged carbon dioxide from the step of pressure-releasing and cooling the modified graphene.
canceled
canceled
An apparatus for modifying a graphene comprising: a first modification reactor performing a first modification reaction of the graphene using carbon dioxide at a temperature of 20 to 50 C and a pressure of 73 to 200 atm; a carbon dioxide feeding pump feeding carbon dioxide into the first modification reactor; a raw material injection apparatus injecting the graphene into the first modification reactor; a first pressure-releaser connected to a rear end of the first modification reactor; and a recovering bath connected to a rear end of the first pressure-releaser and recovering the graphene in a state in which deionized water is filled into the recovering bath. Page 3 of 6
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Graphene modification using subcritical or supercritical CO₂ at 20-50°C and 73-200 atm, with pressure-release/cooling cycle repeated, and graphene recovered in a deionized water bath. XRD, SEM, and TEM characterization performed on the modified graphene.
2 materials1 process step
Second example of graphene modification using the described supercritical/subcritical CO₂ process. SEM and TEM images compared to Example 1 and Comparative Example 1.
1 material
Comparative graphene sample for XRD, SEM, and TEM comparison against Examples 1 and 2.
Layer stacks claimed or described, ordered top of device to substrate.
graphene modification apparatus
No layer stack recorded.
Materials described outside the worked examples.
graphene precursor materials
surfactant
deionized water
H₂O
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 73–200 atm | — |
Pressure | 80–200 atm |
Patent
Atlas literature
Patent
US 9,611,149Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the apparatus for modifying the graphene according to an exemplary embodiment of the present invention may include a carbon dioxide storing bath 11 …
FIG. 2 shows XRD measurement result of graphenes obtained by Example 1 and Comparative Example 1 of the present invention.
FIG. 3 is a schematic diagram simply showing a state in which the graphene is modified according to an exemplary embodiment of the present invention. Referring …
FIG. 4 shows scanning electron microscope (SEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. 5
FIG. 5 shows transmission electron microscope (TEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. …
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 modifying a graphene comprising the steps of: injecting carbon dioxide in a liquid state into a reactor having the graphene; modifying the graphene by temperature-raising and pressure-raising carbon dioxide to 20 to 50 ' C and 73 to 200 atm, respectively; pressure-releasing and cooling the modified graphene; and recovering the pressure-released graphene by a recovering bath filled with deionized water s wherein the steps of temperature-raising and pressure-raising of the carbon dioxide, and pressure-releasinq and cooling of the modified graphene are repeated at least two times.
The method of claim 1, wherein the graphene is prepared from at least one kind selected from the group consisting of graphene platelet, graphene nanoplatelet, graphene oxide, graphite, graphite oxide, graphite nanoplatelet, expanded graphite, diamond, fullerene, carbon black, activated carbon, charcoal, carbon nanoribbon, carbon nanowire, carbon nanoclay, carbon nanotube, pitch carbon fiber, carbon nanofiber, carbon glass fiber, and asphalt.
The method of claim 1, wherein the temperature-raising and pressure-raising of the carbon dioxide is performed in the presence of surfactant.
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a temperature of 20 to 30 C. Page 2 of 6 Application Number 14/907,862 Attorney Docket LPP₂₀₁₆₀₁₀₀US Amendment Filed 09 January 2017 Reply to Office Action of 07 October 2016
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a pressure of 1 to 10 atm.
The method of claim 1, further comprising: recovering the carbon dioxide discharged from the pressure-releasing and cooling of the modified graphene so that the carbon dioxide is reused further comprising a step of recovering a discharged carbon dioxide from the step of pressure-releasing and cooling the modified graphene.
canceled
canceled
An apparatus for modifying a graphene comprising: a first modification reactor performing a first modification reaction of the graphene using carbon dioxide at a temperature of 20 to 50 C and a pressure of 73 to 200 atm; a carbon dioxide feeding pump feeding carbon dioxide into the first modification reactor; a raw material injection apparatus injecting the graphene into the first modification reactor; a first pressure-releaser connected to a rear end of the first modification reactor; and a recovering bath connected to a rear end of the first pressure-releaser and recovering the graphene in a state in which deionized water is filled into the recovering bath. Page 3 of 6
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Graphene modification using subcritical or supercritical CO₂ at 20-50°C and 73-200 atm, with pressure-release/cooling cycle repeated, and graphene recovered in a deionized water bath. XRD, SEM, and TEM characterization performed on the modified graphene.
2 materials1 process step
Second example of graphene modification using the described supercritical/subcritical CO₂ process. SEM and TEM images compared to Example 1 and Comparative Example 1.
1 material
Comparative graphene sample for XRD, SEM, and TEM comparison against Examples 1 and 2.
Layer stacks claimed or described, ordered top of device to substrate.
graphene modification apparatus
No layer stack recorded.
Materials described outside the worked examples.
graphene precursor materials
surfactant
deionized water
H₂O
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 73–200 atm | — |
Pressure | 80–200 atm |
Patent
Atlas literature
Patent
US 9,611,149Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1, the apparatus for modifying the graphene according to an exemplary embodiment of the present invention may include a carbon dioxide storing bath 11 …
FIG. 2 shows XRD measurement result of graphenes obtained by Example 1 and Comparative Example 1 of the present invention.
FIG. 3 is a schematic diagram simply showing a state in which the graphene is modified according to an exemplary embodiment of the present invention. Referring …
FIG. 4 shows scanning electron microscope (SEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. 5
FIG. 5 shows transmission electron microscope (TEM) images of graphenes obtained by Examples 1 and 2 and Comparative Example 1 of the present invention. …
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 modifying a graphene comprising the steps of: injecting carbon dioxide in a liquid state into a reactor having the graphene; modifying the graphene by temperature-raising and pressure-raising carbon dioxide to 20 to 50 ' C and 73 to 200 atm, respectively; pressure-releasing and cooling the modified graphene; and recovering the pressure-released graphene by a recovering bath filled with deionized water s wherein the steps of temperature-raising and pressure-raising of the carbon dioxide, and pressure-releasinq and cooling of the modified graphene are repeated at least two times.
The method of claim 1, wherein the graphene is prepared from at least one kind selected from the group consisting of graphene platelet, graphene nanoplatelet, graphene oxide, graphite, graphite oxide, graphite nanoplatelet, expanded graphite, diamond, fullerene, carbon black, activated carbon, charcoal, carbon nanoribbon, carbon nanowire, carbon nanoclay, carbon nanotube, pitch carbon fiber, carbon nanofiber, carbon glass fiber, and asphalt.
The method of claim 1, wherein the temperature-raising and pressure-raising of the carbon dioxide is performed in the presence of surfactant.
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a temperature of 20 to 30 C. Page 2 of 6 Application Number 14/907,862 Attorney Docket LPP₂₀₁₆₀₁₀₀US Amendment Filed 09 January 2017 Reply to Office Action of 07 October 2016
The method of claim 1, wherein the pressure-releasing and cooling of the modified graphene has a pressure of 1 to 10 atm.
The method of claim 1, further comprising: recovering the carbon dioxide discharged from the pressure-releasing and cooling of the modified graphene so that the carbon dioxide is reused further comprising a step of recovering a discharged carbon dioxide from the step of pressure-releasing and cooling the modified graphene.
canceled
canceled
An apparatus for modifying a graphene comprising: a first modification reactor performing a first modification reaction of the graphene using carbon dioxide at a temperature of 20 to 50 C and a pressure of 73 to 200 atm; a carbon dioxide feeding pump feeding carbon dioxide into the first modification reactor; a raw material injection apparatus injecting the graphene into the first modification reactor; a first pressure-releaser connected to a rear end of the first modification reactor; and a recovering bath connected to a rear end of the first pressure-releaser and recovering the graphene in a state in which deionized water is filled into the recovering bath. Page 3 of 6
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Graphene modification using subcritical or supercritical CO₂ at 20-50°C and 73-200 atm, with pressure-release/cooling cycle repeated, and graphene recovered in a deionized water bath. XRD, SEM, and TEM characterization performed on the modified graphene.
2 materials1 process step
Second example of graphene modification using the described supercritical/subcritical CO₂ process. SEM and TEM images compared to Example 1 and Comparative Example 1.
1 material
Comparative graphene sample for XRD, SEM, and TEM comparison against Examples 1 and 2.
Layer stacks claimed or described, ordered top of device to substrate.
graphene modification apparatus
No layer stack recorded.
Materials described outside the worked examples.
graphene precursor materials
surfactant
deionized water
H₂O
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 73–200 atm | — |
Pressure | 80–200 atm |
| — |
Pressure | 1–10 atm | — |
Pressure | 1–5 atm | — |
Pressure | 80–90 atm | — |
| — |
Pressure | 1–10 atm | — |
Pressure | 1–5 atm | — |
Pressure | 80–90 atm | — |
| — |
Pressure | 1–10 atm | — |
Pressure | 1–5 atm | — |
Pressure | 80–90 atm | — |
| — |
Pressure | 1–10 atm | — |
Pressure | 1–5 atm | — |
Pressure | 80–90 atm | — |