Patent
US 10,229,862Thermal Management System Containing a Graphene Oxide-Coated Graphitic Foil Laminate for Electronic Device Application
Aruna Zhamu, Mingchao Wang, Wei Xiong, Bor Z. Jang
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,229,862Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite composites) …
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.4 (a) Thermal conductivity values of the GO layer alone (i), GO-coated flexible graphite (FG) foil (*), and FG foil alone (A) plotted as a function of the …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
FIG.6 Surface temperature fields of two identical smart phones running the same video 5 programs for 10 minutes. One smart phone (top image) contains 2 sheets …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A heat dissipation system, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, wherein one of said major surfaces is in operative contact with the heat source such that the heat-conducting layer is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited directly on at least one of said two primary surfaces, wherein said graphitic substrate or core layer has a thickness greater than 1 nm, and said graphene oxide coating layer has a thickness greater than 1 nm and an oxygen content of 0.01 %-40 % by weight based on the total graphene oxide coating weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length or width, and i -s,, having an integrated layer of highly ordered structure of carbon atoms wherein- said graphene oxide-coated graphitic foil laminate exhibits an in-plane thermal conductivity greater than 1,000 W/mK and an in-plane electric conductivity greater than 1,500 S/cm and a thickness-direction thermal conductivity lower than 10 W/mK 2 Currently amended
The heat dissipation system as defined in claim 1, wherein said oxygen content is from 0.01% to 10% by weight. Previously presented
The heat dissipation system of claim 1, wherein the electronic device further comprises a heat dissipation device positioned in a location not directly adjacent to the heat source and wherein one of the major surfaces of the heat-conducting layer is in operative contact with the heat dissipation device. Original
The heat dissipation system of claim 1, wherein a thermal transfer material is positioned between the heat-conducting layer and the heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a portable computing device containing a central processing unit (CPU), a battery, or a supercapacitor as a heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a digital camera, a mobile phone, a laptop computer, a tablet, and electronic book or e-book, a power tool, or a hand-held video recording device. Original
The heat dissipation system as defined in claim 1, wherein the graphitic substrate layer or graphene oxide coating layer has a thickness less than 200 pm Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic layer has an in-plane electric conductivity greater than 2,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide is a reduced graphene oxide having an oxygen content less than 5 % by weight. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide contains a reduced graphene oxide. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide has an oxygen weight fraction of 23 % to 35 % and is thermally conductive but not electrically conductive. Original
The heat dissipation system as defined in claim 1, wherein said graphitic foil contains a material selected from natural graphite, artificial graphite, meso-phase carbon, meso-phase pitch, meso-carbon micro-bead, soft carbon, hard carbon, coke, carbon fiber, carbon nano-fiber, carbon nano-tube, or a combination thereof. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has a Rockwell hardness value greater than 60. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane thermal conductivity greater than 1,700 W/mK or through-plane thermal conductivity less than 5 W/mK. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 3,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an electrical conductivity greater than 1,500 S/cm, a physical density greater than 1.4 g/cm3, and a tensile strength greater than 10 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 2,000 S/cm, a physical density greater than 1.8 g/cm3, and a tensile strength greater than 40 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm, an in-plane thermal conductivity greater than 1,500 W/mK, a physical density greater than 2.0 g/cm 3, and a tensile strength greater than 60 MPa. Original
The heat dissipation system of claim 1, wherein said graphene oxide coating layer is deposited on each of said two primary surfaces of said graphitic core layer. Previously presented
The heat dissipation system of claim 1, wherein at least one of said graphene oxide coating layer is further deposited with a layer of electrically insulating material. Original
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A heat dissipation system, comprising: 5 (A) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (B) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphene oxide coating layer contains a unitary graphene layer or graphene single crystal and has an oxygen content of less than 5 % by weight based on the total graphene oxide weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length, and,, having an integrated layer of said graphene oxide-coated graphitic foil laminate greater than 1,000 W/mK and an in-plane electric thickness-direction thermal conductivity lower highly ordered structure of carbon atoms wherein-exhibits an in-plane thermal conductivity conductivity greater than 1,500 S/cm and a than 10 W/mK. Currently amended
Layer stacks claimed or described, ordered top of device to substrate.
heat dissipation system
Materials described outside the worked examples.
graphitic substrate/core layer
graphene oxide coating layer
Measurements and analyses referenced in the patent, with their drawing references.
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
In Plane Thermal Conductivity | ≥ 1000 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 1500 S/cm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,229,862Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite composites) …
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.4 (a) Thermal conductivity values of the GO layer alone (i), GO-coated flexible graphite (FG) foil (*), and FG foil alone (A) plotted as a function of the …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
FIG.6 Surface temperature fields of two identical smart phones running the same video 5 programs for 10 minutes. One smart phone (top image) contains 2 sheets …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A heat dissipation system, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, wherein one of said major surfaces is in operative contact with the heat source such that the heat-conducting layer is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited directly on at least one of said two primary surfaces, wherein said graphitic substrate or core layer has a thickness greater than 1 nm, and said graphene oxide coating layer has a thickness greater than 1 nm and an oxygen content of 0.01 %-40 % by weight based on the total graphene oxide coating weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length or width, and i -s,, having an integrated layer of highly ordered structure of carbon atoms wherein- said graphene oxide-coated graphitic foil laminate exhibits an in-plane thermal conductivity greater than 1,000 W/mK and an in-plane electric conductivity greater than 1,500 S/cm and a thickness-direction thermal conductivity lower than 10 W/mK 2 Currently amended
The heat dissipation system as defined in claim 1, wherein said oxygen content is from 0.01% to 10% by weight. Previously presented
The heat dissipation system of claim 1, wherein the electronic device further comprises a heat dissipation device positioned in a location not directly adjacent to the heat source and wherein one of the major surfaces of the heat-conducting layer is in operative contact with the heat dissipation device. Original
The heat dissipation system of claim 1, wherein a thermal transfer material is positioned between the heat-conducting layer and the heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a portable computing device containing a central processing unit (CPU), a battery, or a supercapacitor as a heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a digital camera, a mobile phone, a laptop computer, a tablet, and electronic book or e-book, a power tool, or a hand-held video recording device. Original
The heat dissipation system as defined in claim 1, wherein the graphitic substrate layer or graphene oxide coating layer has a thickness less than 200 pm Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic layer has an in-plane electric conductivity greater than 2,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide is a reduced graphene oxide having an oxygen content less than 5 % by weight. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide contains a reduced graphene oxide. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide has an oxygen weight fraction of 23 % to 35 % and is thermally conductive but not electrically conductive. Original
The heat dissipation system as defined in claim 1, wherein said graphitic foil contains a material selected from natural graphite, artificial graphite, meso-phase carbon, meso-phase pitch, meso-carbon micro-bead, soft carbon, hard carbon, coke, carbon fiber, carbon nano-fiber, carbon nano-tube, or a combination thereof. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has a Rockwell hardness value greater than 60. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane thermal conductivity greater than 1,700 W/mK or through-plane thermal conductivity less than 5 W/mK. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 3,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an electrical conductivity greater than 1,500 S/cm, a physical density greater than 1.4 g/cm3, and a tensile strength greater than 10 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 2,000 S/cm, a physical density greater than 1.8 g/cm3, and a tensile strength greater than 40 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm, an in-plane thermal conductivity greater than 1,500 W/mK, a physical density greater than 2.0 g/cm 3, and a tensile strength greater than 60 MPa. Original
The heat dissipation system of claim 1, wherein said graphene oxide coating layer is deposited on each of said two primary surfaces of said graphitic core layer. Previously presented
The heat dissipation system of claim 1, wherein at least one of said graphene oxide coating layer is further deposited with a layer of electrically insulating material. Original
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A heat dissipation system, comprising: 5 (A) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (B) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphene oxide coating layer contains a unitary graphene layer or graphene single crystal and has an oxygen content of less than 5 % by weight based on the total graphene oxide weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length, and,, having an integrated layer of said graphene oxide-coated graphitic foil laminate greater than 1,000 W/mK and an in-plane electric thickness-direction thermal conductivity lower highly ordered structure of carbon atoms wherein-exhibits an in-plane thermal conductivity conductivity greater than 1,500 S/cm and a than 10 W/mK. Currently amended
Layer stacks claimed or described, ordered top of device to substrate.
heat dissipation system
Materials described outside the worked examples.
graphitic substrate/core layer
graphene oxide coating layer
Measurements and analyses referenced in the patent, with their drawing references.
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
In Plane Thermal Conductivity | ≥ 1000 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 1500 S/cm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,229,862Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite composites) …
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.4 (a) Thermal conductivity values of the GO layer alone (i), GO-coated flexible graphite (FG) foil (*), and FG foil alone (A) plotted as a function of the …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
FIG.6 Surface temperature fields of two identical smart phones running the same video 5 programs for 10 minutes. One smart phone (top image) contains 2 sheets …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A heat dissipation system, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, wherein one of said major surfaces is in operative contact with the heat source such that the heat-conducting layer is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited directly on at least one of said two primary surfaces, wherein said graphitic substrate or core layer has a thickness greater than 1 nm, and said graphene oxide coating layer has a thickness greater than 1 nm and an oxygen content of 0.01 %-40 % by weight based on the total graphene oxide coating weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length or width, and i -s,, having an integrated layer of highly ordered structure of carbon atoms wherein- said graphene oxide-coated graphitic foil laminate exhibits an in-plane thermal conductivity greater than 1,000 W/mK and an in-plane electric conductivity greater than 1,500 S/cm and a thickness-direction thermal conductivity lower than 10 W/mK 2 Currently amended
The heat dissipation system as defined in claim 1, wherein said oxygen content is from 0.01% to 10% by weight. Previously presented
The heat dissipation system of claim 1, wherein the electronic device further comprises a heat dissipation device positioned in a location not directly adjacent to the heat source and wherein one of the major surfaces of the heat-conducting layer is in operative contact with the heat dissipation device. Original
The heat dissipation system of claim 1, wherein a thermal transfer material is positioned between the heat-conducting layer and the heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a portable computing device containing a central processing unit (CPU), a battery, or a supercapacitor as a heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a digital camera, a mobile phone, a laptop computer, a tablet, and electronic book or e-book, a power tool, or a hand-held video recording device. Original
The heat dissipation system as defined in claim 1, wherein the graphitic substrate layer or graphene oxide coating layer has a thickness less than 200 pm Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic layer has an in-plane electric conductivity greater than 2,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide is a reduced graphene oxide having an oxygen content less than 5 % by weight. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide contains a reduced graphene oxide. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide has an oxygen weight fraction of 23 % to 35 % and is thermally conductive but not electrically conductive. Original
The heat dissipation system as defined in claim 1, wherein said graphitic foil contains a material selected from natural graphite, artificial graphite, meso-phase carbon, meso-phase pitch, meso-carbon micro-bead, soft carbon, hard carbon, coke, carbon fiber, carbon nano-fiber, carbon nano-tube, or a combination thereof. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has a Rockwell hardness value greater than 60. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane thermal conductivity greater than 1,700 W/mK or through-plane thermal conductivity less than 5 W/mK. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 3,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an electrical conductivity greater than 1,500 S/cm, a physical density greater than 1.4 g/cm3, and a tensile strength greater than 10 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 2,000 S/cm, a physical density greater than 1.8 g/cm3, and a tensile strength greater than 40 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm, an in-plane thermal conductivity greater than 1,500 W/mK, a physical density greater than 2.0 g/cm 3, and a tensile strength greater than 60 MPa. Original
The heat dissipation system of claim 1, wherein said graphene oxide coating layer is deposited on each of said two primary surfaces of said graphitic core layer. Previously presented
The heat dissipation system of claim 1, wherein at least one of said graphene oxide coating layer is further deposited with a layer of electrically insulating material. Original
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A heat dissipation system, comprising: 5 (A) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (B) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphene oxide coating layer contains a unitary graphene layer or graphene single crystal and has an oxygen content of less than 5 % by weight based on the total graphene oxide weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length, and,, having an integrated layer of said graphene oxide-coated graphitic foil laminate greater than 1,000 W/mK and an in-plane electric thickness-direction thermal conductivity lower highly ordered structure of carbon atoms wherein-exhibits an in-plane thermal conductivity conductivity greater than 1,500 S/cm and a than 10 W/mK. Currently amended
Layer stacks claimed or described, ordered top of device to substrate.
heat dissipation system
Materials described outside the worked examples.
graphitic substrate/core layer
graphene oxide coating layer
Measurements and analyses referenced in the patent, with their drawing references.
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
In Plane Thermal Conductivity | ≥ 1000 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 1500 S/cm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,229,862Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite composites) …
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.4 (a) Thermal conductivity values of the GO layer alone (i), GO-coated flexible graphite (FG) foil (*), and FG foil alone (A) plotted as a function of the …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
FIG.6 Surface temperature fields of two identical smart phones running the same video 5 programs for 10 minutes. One smart phone (top image) contains 2 sheets …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A heat dissipation system, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, wherein one of said major surfaces is in operative contact with the heat source such that the heat-conducting layer is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited directly on at least one of said two primary surfaces, wherein said graphitic substrate or core layer has a thickness greater than 1 nm, and said graphene oxide coating layer has a thickness greater than 1 nm and an oxygen content of 0.01 %-40 % by weight based on the total graphene oxide coating weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length or width, and i -s,, having an integrated layer of highly ordered structure of carbon atoms wherein- said graphene oxide-coated graphitic foil laminate exhibits an in-plane thermal conductivity greater than 1,000 W/mK and an in-plane electric conductivity greater than 1,500 S/cm and a thickness-direction thermal conductivity lower than 10 W/mK 2 Currently amended
The heat dissipation system as defined in claim 1, wherein said oxygen content is from 0.01% to 10% by weight. Previously presented
The heat dissipation system of claim 1, wherein the electronic device further comprises a heat dissipation device positioned in a location not directly adjacent to the heat source and wherein one of the major surfaces of the heat-conducting layer is in operative contact with the heat dissipation device. Original
The heat dissipation system of claim 1, wherein a thermal transfer material is positioned between the heat-conducting layer and the heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a portable computing device containing a central processing unit (CPU), a battery, or a supercapacitor as a heat source. Original
The heat dissipation system of claim 1, wherein the electronic device is a digital camera, a mobile phone, a laptop computer, a tablet, and electronic book or e-book, a power tool, or a hand-held video recording device. Original
The heat dissipation system as defined in claim 1, wherein the graphitic substrate layer or graphene oxide coating layer has a thickness less than 200 pm Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic layer has an in-plane electric conductivity greater than 2,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide is a reduced graphene oxide having an oxygen content less than 5 % by weight. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide contains a reduced graphene oxide. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide has an oxygen weight fraction of 23 % to 35 % and is thermally conductive but not electrically conductive. Original
The heat dissipation system as defined in claim 1, wherein said graphitic foil contains a material selected from natural graphite, artificial graphite, meso-phase carbon, meso-phase pitch, meso-carbon micro-bead, soft carbon, hard carbon, coke, carbon fiber, carbon nano-fiber, carbon nano-tube, or a combination thereof. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has a Rockwell hardness value greater than 60. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane thermal conductivity greater than 1,700 W/mK or through-plane thermal conductivity less than 5 W/mK. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm. Original
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 3,000 S/cm. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an electrical conductivity greater than 1,500 S/cm, a physical density greater than 1.4 g/cm3, and a tensile strength greater than 10 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide-coated graphitic foil laminate has an in-plane electrical conductivity greater than 2,000 S/cm, a physical density greater than 1.8 g/cm3, and a tensile strength greater than 40 MPa. Previously presented
The heat dissipation system as defined in claim 1, wherein said graphene oxide- coated graphitic foil laminate has an in-plane electrical conductivity greater than 5,000 S/cm, an in-plane thermal conductivity greater than 1,500 W/mK, a physical density greater than 2.0 g/cm 3, and a tensile strength greater than 60 MPa. Original
The heat dissipation system of claim 1, wherein said graphene oxide coating layer is deposited on each of said two primary surfaces of said graphitic core layer. Previously presented
The heat dissipation system of claim 1, wherein at least one of said graphene oxide coating layer is further deposited with a layer of electrically insulating material. Original
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A heat dissipation system, comprising: 5 (A) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (B) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one graphene oxide-coated graphitic foil laminate, and wherein the laminate is composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of said two primary surfaces, wherein said graphene oxide coating layer contains a unitary graphene layer or graphene single crystal and has an oxygen content of less than 5 % by weight based on the total graphene oxide weight, wherein said graphitic substrate or core layer is selected from the group consisting of flexible graphite foil, graphite particle paper, carbon-carbon composite film, carbon nanofiber paper, carbon nanotube paper, graphene fluoride paper, hydrogenated graphene paper, doped graphene paper, and functionalized graphene paper, wherein said graphene oxide coating layer comprises a unitary graphene layer or a single crystal of graphene planes that are parallel to a graphene oxide coating layer surface, and wherein each unitary graphene layer is a large-scale entity, no less than 10 p m in length, and,, having an integrated layer of said graphene oxide-coated graphitic foil laminate greater than 1,000 W/mK and an in-plane electric thickness-direction thermal conductivity lower highly ordered structure of carbon atoms wherein-exhibits an in-plane thermal conductivity conductivity greater than 1,500 S/cm and a than 10 W/mK. Currently amended
Layer stacks claimed or described, ordered top of device to substrate.
heat dissipation system
Materials described outside the worked examples.
graphitic substrate/core layer
graphene oxide coating layer
Measurements and analyses referenced in the patent, with their drawing references.
FIG.2 (a) A SEM image of a graphite worm sample after thermal exfoliation of graphite intercalation compounds (GICs) or graphite oxide powders; (b) An SEM …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
In Plane Thermal Conductivity | ≥ 1000 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 1500 S/cm |
Related documents with shared materials, methods, properties, or citations.
graphene oxide-coated graphitic foil laminate
reduced graphene oxide
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
Thickness Direction Thermal Conductivity | ≤ 10 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Thermal Conductivity | ≥ 1700 W/mK | graphene oxide-coated graphitic foil laminate |
Through Plane Thermal Conductivity | ≤ 5 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 5000 S/cm | graphene oxide-coated graphitic foil laminate |
Rockwell Hardness | ≥ 60 | graphene oxide-coated graphitic foil laminate |
Tensile Strength | ≥ 10 MPa | graphene oxide-coated graphitic foil laminate |
Physical Density | ≥ 1.4 g/cm3 | graphene oxide-coated graphitic foil laminate |
Duration | 15–120 s | — |
Thickness | 3.35–33.5 nm | — |
Duration | 900–7200 s | — |
Pressure | 12–121 MPa | — |
Duration | 1–5 hours | — |
— | 237–582 W | — |
— | 983–1807 W | — |
— | 698–1803 W | — |
— | 10–30 W | — |
— | 600–2000 W | — |
— | 140–190 W | — |
— | 3000–5000 W | — |
— | 140–300 W | — |
Duration | 1–3 hours | — |
— | ≤ 300 W | — |
— | ≤ 237 W | — |
— | ≤ 10 W | — |
— | ≤ 5 W | — |
— | ≤ 1 W | — |
— | ≥ 1 W | — |
— | ≥ 1700 W | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
— | ≥ 800 W | — |
— | ≥ 600 W | — |
Pressure | ≥ 40 MPa | — |
Pressure | ≥ 120 MPa | — |
— | ≥ 1500 W | — |
— | ≥ 1600 W | — |
Thickness | ≥ 10 mm | — |
Pressure | ≥ 60 MPa | — |
Thickness | 1–1000000 nm | — |
Thickness | 6.7–20 nm | — |
graphene oxide-coated graphitic foil laminate
reduced graphene oxide
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
Thickness Direction Thermal Conductivity | ≤ 10 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Thermal Conductivity | ≥ 1700 W/mK | graphene oxide-coated graphitic foil laminate |
Through Plane Thermal Conductivity | ≤ 5 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 5000 S/cm | graphene oxide-coated graphitic foil laminate |
Rockwell Hardness | ≥ 60 | graphene oxide-coated graphitic foil laminate |
Tensile Strength | ≥ 10 MPa | graphene oxide-coated graphitic foil laminate |
Physical Density | ≥ 1.4 g/cm3 | graphene oxide-coated graphitic foil laminate |
Duration | 15–120 s | — |
Thickness | 3.35–33.5 nm | — |
Duration | 900–7200 s | — |
Pressure | 12–121 MPa | — |
Duration | 1–5 hours | — |
— | 237–582 W | — |
— | 983–1807 W | — |
— | 698–1803 W | — |
— | 10–30 W | — |
— | 600–2000 W | — |
— | 140–190 W | — |
— | 3000–5000 W | — |
— | 140–300 W | — |
Duration | 1–3 hours | — |
— | ≤ 300 W | — |
— | ≤ 237 W | — |
— | ≤ 10 W | — |
— | ≤ 5 W | — |
— | ≤ 1 W | — |
— | ≥ 1 W | — |
— | ≥ 1700 W | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
— | ≥ 800 W | — |
— | ≥ 600 W | — |
Pressure | ≥ 40 MPa | — |
Pressure | ≥ 120 MPa | — |
— | ≥ 1500 W | — |
— | ≥ 1600 W | — |
Thickness | ≥ 10 mm | — |
Pressure | ≥ 60 MPa | — |
Thickness | 1–1000000 nm | — |
Thickness | 6.7–20 nm | — |
graphene oxide-coated graphitic foil laminate
reduced graphene oxide
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
Thickness Direction Thermal Conductivity | ≤ 10 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Thermal Conductivity | ≥ 1700 W/mK | graphene oxide-coated graphitic foil laminate |
Through Plane Thermal Conductivity | ≤ 5 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 5000 S/cm | graphene oxide-coated graphitic foil laminate |
Rockwell Hardness | ≥ 60 | graphene oxide-coated graphitic foil laminate |
Tensile Strength | ≥ 10 MPa | graphene oxide-coated graphitic foil laminate |
Physical Density | ≥ 1.4 g/cm3 | graphene oxide-coated graphitic foil laminate |
Duration | 15–120 s | — |
Thickness | 3.35–33.5 nm | — |
Duration | 900–7200 s | — |
Pressure | 12–121 MPa | — |
Duration | 1–5 hours | — |
— | 237–582 W | — |
— | 983–1807 W | — |
— | 698–1803 W | — |
— | 10–30 W | — |
— | 600–2000 W | — |
— | 140–190 W | — |
— | 3000–5000 W | — |
— | 140–300 W | — |
Duration | 1–3 hours | — |
— | ≤ 300 W | — |
— | ≤ 237 W | — |
— | ≤ 10 W | — |
— | ≤ 5 W | — |
— | ≤ 1 W | — |
— | ≥ 1 W | — |
— | ≥ 1700 W | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
— | ≥ 800 W | — |
— | ≥ 600 W | — |
Pressure | ≥ 40 MPa | — |
Pressure | ≥ 120 MPa | — |
— | ≥ 1500 W | — |
— | ≥ 1600 W | — |
Thickness | ≥ 10 mm | — |
Pressure | ≥ 60 MPa | — |
Thickness | 1–1000000 nm | — |
Thickness | 6.7–20 nm | — |
graphene oxide-coated graphitic foil laminate
reduced graphene oxide
FIG.3 (a) A SEM image of a GO coating layer cross-section wherein multiple graphene sheets, originally 30 nm⁻² p m in lateral dimension, have been seamlessly …
FIG.5 (a) Tensile strength, (b) scratch visibility, (c) scratch depth, and (d) Rockwell hardness of a series of GO-coated FG foils plotted as a function of the …
Thickness Direction Thermal Conductivity | ≤ 10 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Thermal Conductivity | ≥ 1700 W/mK | graphene oxide-coated graphitic foil laminate |
Through Plane Thermal Conductivity | ≤ 5 W/mK | graphene oxide-coated graphitic foil laminate |
In Plane Electrical Conductivity | ≥ 5000 S/cm | graphene oxide-coated graphitic foil laminate |
Rockwell Hardness | ≥ 60 | graphene oxide-coated graphitic foil laminate |
Tensile Strength | ≥ 10 MPa | graphene oxide-coated graphitic foil laminate |
Physical Density | ≥ 1.4 g/cm3 | graphene oxide-coated graphitic foil laminate |
Duration | 15–120 s | — |
Thickness | 3.35–33.5 nm | — |
Duration | 900–7200 s | — |
Pressure | 12–121 MPa | — |
Duration | 1–5 hours | — |
— | 237–582 W | — |
— | 983–1807 W | — |
— | 698–1803 W | — |
— | 10–30 W | — |
— | 600–2000 W | — |
— | 140–190 W | — |
— | 3000–5000 W | — |
— | 140–300 W | — |
Duration | 1–3 hours | — |
— | ≤ 300 W | — |
— | ≤ 237 W | — |
— | ≤ 10 W | — |
— | ≤ 5 W | — |
— | ≤ 1 W | — |
— | ≥ 1 W | — |
— | ≥ 1700 W | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
— | ≥ 800 W | — |
— | ≥ 600 W | — |
Pressure | ≥ 40 MPa | — |
Pressure | ≥ 120 MPa | — |
— | ≥ 1500 W | — |
— | ≥ 1600 W | — |
Thickness | ≥ 10 mm | — |
Pressure | ≥ 60 MPa | — |
Thickness | 1–1000000 nm | — |
Thickness | 6.7–20 nm | — |