Patent
US 9,704,611COMPOSITE STRUCTURE OF GRAPHENE AND CARBON NANOTUBE AND METHOD OF MANUFACTURING THE SAME
Mark Y. WU
US
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Patent
Atlas literature
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US 9,704,611Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
FIG. 2, a flowchart illustrates the method of manufacturing the composite structure of graphene and carbon nanotube according to the second embodiment of the …
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-4. canceled
canceled
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A method of manufacturing a composite structure of graphene and carbon nanotube configured in a three-dimensional form, comprising sequential steps of: graphene platelets preparation, here performed by preparing graphene platelets and each of the graphene platelets formed of N graphene layers, wherein N is a positive integer between 1 and 1,000; chemical precipitation, performed by dispersing the graphene platelets in a solution comprising a metal salt precursor, forming the metal salt from the solution through precipitation, and depositing the metal salt onto surfaces of the graphene platelets; chemical reduction, performed by placing the graphene platelets decorated with metal salt at a high temperature for a thermal reduction treatment such that the metal salt thermally decomposes and is reduced to form a plurality of metal particles; and carbon nanotubes growth step, performed by supplying a gaseous carbon source and a reducing gas for the graphene platelets, and forming the carbon nanotubes on the metal particles by a thermal treatment, wherein each graphene platelet has a planar direction along a planar surface of the graphene platelet, and an axial direction of the carbon nanotube is perpendicular to the planar direction.
The method claimed in claim 5, wherein the graphene platelets have a 3 tap density between 0.01 and 0.1 g/cm, each of the graphene platelet has a thickness, a lateral dimension, an oxygen content, a carbon content and a specific surface area, wherein the thickness is between 1 nm and 50 nm, the lateral dimension is between 1 pm and 100 im, the oxygen content is specified for oxygen contained in the composite structure by a weight percent less than 3% of a weight of the composite structure, the carbon content is specified for carbon contained in the composite structure by a weight percent greater than 95% of the weight of the composite structure, the specific surface area is between 20 and 750 SVG 14748954.03-22-2017.J₀LJB₈XFRXEAPX0.CLM.1.32.1892.2940.1998.2996.svg 0.187 0.353 Chemistry Black and white and a ratio of the lateral dimension to the thickness is between 10 and 10,000. Application No. 14/748,954 Attorney Docket No. 2846/1030PUS 1 Response to Office Action dated 11 Jan 2017 Page 3 of
The method as claimed in claim 5, wherein the precursor comprises at least one metallic element of copper, nickel and iron, and the metal salt comprises at least one salt formed of copper, nickel and iron salts.
The method as claimed in claim 5, wherein the step of chemical reduction is performed in a protective gas, the protective gas contains a reducing gas, the reducing gas comprises a hydrogen gas, and the high temperature is greater than 200 ° C and less than 1200 °C.
The method as claimed in claim 5, wherein the carbon source in the step of carbon nanotubes growth is selected from a group of a gaseous hydrogen carbon compounds comprising methane.
The method as claimed in claim 5, wherein the thermal treatment in the step of carbon nanotubes growth is performed at a temperature greater than 800 ° C and less than 1500 °C.
Layer stacks claimed or described, ordered top of device to substrate.
composite structure of graphene and carbon nanotube (three-dimensional form)
Materials described outside the worked examples.
graphene platelets
metal salt
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density of graphene platelets | 0.01–0.1 g/cm3 | graphene platelets |
tap density of whole composite structure | ≤ 0.03 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,704,611Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
FIG. 2, a flowchart illustrates the method of manufacturing the composite structure of graphene and carbon nanotube according to the second embodiment of the …
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-4. canceled
canceled
canceled
canceled
A method of manufacturing a composite structure of graphene and carbon nanotube configured in a three-dimensional form, comprising sequential steps of: graphene platelets preparation, here performed by preparing graphene platelets and each of the graphene platelets formed of N graphene layers, wherein N is a positive integer between 1 and 1,000; chemical precipitation, performed by dispersing the graphene platelets in a solution comprising a metal salt precursor, forming the metal salt from the solution through precipitation, and depositing the metal salt onto surfaces of the graphene platelets; chemical reduction, performed by placing the graphene platelets decorated with metal salt at a high temperature for a thermal reduction treatment such that the metal salt thermally decomposes and is reduced to form a plurality of metal particles; and carbon nanotubes growth step, performed by supplying a gaseous carbon source and a reducing gas for the graphene platelets, and forming the carbon nanotubes on the metal particles by a thermal treatment, wherein each graphene platelet has a planar direction along a planar surface of the graphene platelet, and an axial direction of the carbon nanotube is perpendicular to the planar direction.
The method claimed in claim 5, wherein the graphene platelets have a 3 tap density between 0.01 and 0.1 g/cm, each of the graphene platelet has a thickness, a lateral dimension, an oxygen content, a carbon content and a specific surface area, wherein the thickness is between 1 nm and 50 nm, the lateral dimension is between 1 pm and 100 im, the oxygen content is specified for oxygen contained in the composite structure by a weight percent less than 3% of a weight of the composite structure, the carbon content is specified for carbon contained in the composite structure by a weight percent greater than 95% of the weight of the composite structure, the specific surface area is between 20 and 750 SVG 14748954.03-22-2017.J₀LJB₈XFRXEAPX0.CLM.1.32.1892.2940.1998.2996.svg 0.187 0.353 Chemistry Black and white and a ratio of the lateral dimension to the thickness is between 10 and 10,000. Application No. 14/748,954 Attorney Docket No. 2846/1030PUS 1 Response to Office Action dated 11 Jan 2017 Page 3 of
The method as claimed in claim 5, wherein the precursor comprises at least one metallic element of copper, nickel and iron, and the metal salt comprises at least one salt formed of copper, nickel and iron salts.
The method as claimed in claim 5, wherein the step of chemical reduction is performed in a protective gas, the protective gas contains a reducing gas, the reducing gas comprises a hydrogen gas, and the high temperature is greater than 200 ° C and less than 1200 °C.
The method as claimed in claim 5, wherein the carbon source in the step of carbon nanotubes growth is selected from a group of a gaseous hydrogen carbon compounds comprising methane.
The method as claimed in claim 5, wherein the thermal treatment in the step of carbon nanotubes growth is performed at a temperature greater than 800 ° C and less than 1500 °C.
Layer stacks claimed or described, ordered top of device to substrate.
composite structure of graphene and carbon nanotube (three-dimensional form)
Materials described outside the worked examples.
graphene platelets
metal salt
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density of graphene platelets | 0.01–0.1 g/cm3 | graphene platelets |
tap density of whole composite structure | ≤ 0.03 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,704,611Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
FIG. 2, a flowchart illustrates the method of manufacturing the composite structure of graphene and carbon nanotube according to the second embodiment of the …
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-4. canceled
canceled
canceled
canceled
A method of manufacturing a composite structure of graphene and carbon nanotube configured in a three-dimensional form, comprising sequential steps of: graphene platelets preparation, here performed by preparing graphene platelets and each of the graphene platelets formed of N graphene layers, wherein N is a positive integer between 1 and 1,000; chemical precipitation, performed by dispersing the graphene platelets in a solution comprising a metal salt precursor, forming the metal salt from the solution through precipitation, and depositing the metal salt onto surfaces of the graphene platelets; chemical reduction, performed by placing the graphene platelets decorated with metal salt at a high temperature for a thermal reduction treatment such that the metal salt thermally decomposes and is reduced to form a plurality of metal particles; and carbon nanotubes growth step, performed by supplying a gaseous carbon source and a reducing gas for the graphene platelets, and forming the carbon nanotubes on the metal particles by a thermal treatment, wherein each graphene platelet has a planar direction along a planar surface of the graphene platelet, and an axial direction of the carbon nanotube is perpendicular to the planar direction.
The method claimed in claim 5, wherein the graphene platelets have a 3 tap density between 0.01 and 0.1 g/cm, each of the graphene platelet has a thickness, a lateral dimension, an oxygen content, a carbon content and a specific surface area, wherein the thickness is between 1 nm and 50 nm, the lateral dimension is between 1 pm and 100 im, the oxygen content is specified for oxygen contained in the composite structure by a weight percent less than 3% of a weight of the composite structure, the carbon content is specified for carbon contained in the composite structure by a weight percent greater than 95% of the weight of the composite structure, the specific surface area is between 20 and 750 SVG 14748954.03-22-2017.J₀LJB₈XFRXEAPX0.CLM.1.32.1892.2940.1998.2996.svg 0.187 0.353 Chemistry Black and white and a ratio of the lateral dimension to the thickness is between 10 and 10,000. Application No. 14/748,954 Attorney Docket No. 2846/1030PUS 1 Response to Office Action dated 11 Jan 2017 Page 3 of
The method as claimed in claim 5, wherein the precursor comprises at least one metallic element of copper, nickel and iron, and the metal salt comprises at least one salt formed of copper, nickel and iron salts.
The method as claimed in claim 5, wherein the step of chemical reduction is performed in a protective gas, the protective gas contains a reducing gas, the reducing gas comprises a hydrogen gas, and the high temperature is greater than 200 ° C and less than 1200 °C.
The method as claimed in claim 5, wherein the carbon source in the step of carbon nanotubes growth is selected from a group of a gaseous hydrogen carbon compounds comprising methane.
The method as claimed in claim 5, wherein the thermal treatment in the step of carbon nanotubes growth is performed at a temperature greater than 800 ° C and less than 1500 °C.
Layer stacks claimed or described, ordered top of device to substrate.
composite structure of graphene and carbon nanotube (three-dimensional form)
Materials described outside the worked examples.
graphene platelets
metal salt
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density of graphene platelets | 0.01–0.1 g/cm3 | graphene platelets |
tap density of whole composite structure | ≤ 0.03 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,704,611Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
FIG. 2, a flowchart illustrates the method of manufacturing the composite structure of graphene and carbon nanotube according to the second embodiment of the …
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-4. canceled
canceled
canceled
canceled
A method of manufacturing a composite structure of graphene and carbon nanotube configured in a three-dimensional form, comprising sequential steps of: graphene platelets preparation, here performed by preparing graphene platelets and each of the graphene platelets formed of N graphene layers, wherein N is a positive integer between 1 and 1,000; chemical precipitation, performed by dispersing the graphene platelets in a solution comprising a metal salt precursor, forming the metal salt from the solution through precipitation, and depositing the metal salt onto surfaces of the graphene platelets; chemical reduction, performed by placing the graphene platelets decorated with metal salt at a high temperature for a thermal reduction treatment such that the metal salt thermally decomposes and is reduced to form a plurality of metal particles; and carbon nanotubes growth step, performed by supplying a gaseous carbon source and a reducing gas for the graphene platelets, and forming the carbon nanotubes on the metal particles by a thermal treatment, wherein each graphene platelet has a planar direction along a planar surface of the graphene platelet, and an axial direction of the carbon nanotube is perpendicular to the planar direction.
The method claimed in claim 5, wherein the graphene platelets have a 3 tap density between 0.01 and 0.1 g/cm, each of the graphene platelet has a thickness, a lateral dimension, an oxygen content, a carbon content and a specific surface area, wherein the thickness is between 1 nm and 50 nm, the lateral dimension is between 1 pm and 100 im, the oxygen content is specified for oxygen contained in the composite structure by a weight percent less than 3% of a weight of the composite structure, the carbon content is specified for carbon contained in the composite structure by a weight percent greater than 95% of the weight of the composite structure, the specific surface area is between 20 and 750 SVG 14748954.03-22-2017.J₀LJB₈XFRXEAPX0.CLM.1.32.1892.2940.1998.2996.svg 0.187 0.353 Chemistry Black and white and a ratio of the lateral dimension to the thickness is between 10 and 10,000. Application No. 14/748,954 Attorney Docket No. 2846/1030PUS 1 Response to Office Action dated 11 Jan 2017 Page 3 of
The method as claimed in claim 5, wherein the precursor comprises at least one metallic element of copper, nickel and iron, and the metal salt comprises at least one salt formed of copper, nickel and iron salts.
The method as claimed in claim 5, wherein the step of chemical reduction is performed in a protective gas, the protective gas contains a reducing gas, the reducing gas comprises a hydrogen gas, and the high temperature is greater than 200 ° C and less than 1200 °C.
The method as claimed in claim 5, wherein the carbon source in the step of carbon nanotubes growth is selected from a group of a gaseous hydrogen carbon compounds comprising methane.
The method as claimed in claim 5, wherein the thermal treatment in the step of carbon nanotubes growth is performed at a temperature greater than 800 ° C and less than 1500 °C.
Layer stacks claimed or described, ordered top of device to substrate.
composite structure of graphene and carbon nanotube (three-dimensional form)
Materials described outside the worked examples.
graphene platelets
metal salt
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 illustrating the composite structure of graphene and carbon nanotube according to the first embodiment of the present invention. It should be noted that …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density of graphene platelets | 0.01–0.1 g/cm3 | graphene platelets |
tap density of whole composite structure | ≤ 0.03 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
metal particles
copper
Cu
nickel
Ni
iron
Fe
hydrogen gas
H₂
methane
CH₄
carbon nanotubes
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
graphene platelet thickness | 1–50 nm | graphene platelets |
graphene platelet lateral dimension | 1–100 µm | graphene platelets |
oxygen content in composite structure | ≤ 3 wt% | graphene platelets |
carbon content in composite structure | ≥ 95 wt% | graphene platelets |
specific surface area of graphene platelets | 20–750 m2/g | graphene platelets |
ratio of lateral dimension to thickness of graphene platelet | 10–10000 | graphene platelets |
Temperature | ≤ 1200 °C | — |
Temperature | ≤ 1500 °C | — |
Temperature | ≥ 200 °C | — |
Temperature | ≥ 800 °C | — |
metal particles
copper
Cu
nickel
Ni
iron
Fe
hydrogen gas
H₂
methane
CH₄
carbon nanotubes
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
graphene platelet thickness | 1–50 nm | graphene platelets |
graphene platelet lateral dimension | 1–100 µm | graphene platelets |
oxygen content in composite structure | ≤ 3 wt% | graphene platelets |
carbon content in composite structure | ≥ 95 wt% | graphene platelets |
specific surface area of graphene platelets | 20–750 m2/g | graphene platelets |
ratio of lateral dimension to thickness of graphene platelet | 10–10000 | graphene platelets |
Temperature | ≤ 1200 °C | — |
Temperature | ≤ 1500 °C | — |
Temperature | ≥ 200 °C | — |
Temperature | ≥ 800 °C | — |
metal particles
copper
Cu
nickel
Ni
iron
Fe
hydrogen gas
H₂
methane
CH₄
carbon nanotubes
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
graphene platelet thickness | 1–50 nm | graphene platelets |
graphene platelet lateral dimension | 1–100 µm | graphene platelets |
oxygen content in composite structure | ≤ 3 wt% | graphene platelets |
carbon content in composite structure | ≥ 95 wt% | graphene platelets |
specific surface area of graphene platelets | 20–750 m2/g | graphene platelets |
ratio of lateral dimension to thickness of graphene platelet | 10–10000 | graphene platelets |
Temperature | ≤ 1200 °C | — |
Temperature | ≤ 1500 °C | — |
Temperature | ≥ 200 °C | — |
Temperature | ≥ 800 °C | — |
metal particles
copper
Cu
nickel
Ni
iron
Fe
hydrogen gas
H₂
methane
CH₄
carbon nanotubes
FIG. 3 is a SEM photo showing the graphene platelets; and [0021]
FIG. 4 is a SEM photo showing the composite structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0022] The accompanying …
graphene platelet thickness | 1–50 nm | graphene platelets |
graphene platelet lateral dimension | 1–100 µm | graphene platelets |
oxygen content in composite structure | ≤ 3 wt% | graphene platelets |
carbon content in composite structure | ≥ 95 wt% | graphene platelets |
specific surface area of graphene platelets | 20–750 m2/g | graphene platelets |
ratio of lateral dimension to thickness of graphene platelet | 10–10000 | graphene platelets |
Temperature | ≤ 1200 °C | — |
Temperature | ≤ 1500 °C | — |
Temperature | ≥ 200 °C | — |
Temperature | ≥ 800 °C | — |