Patent
US 10,822,725Continuous Graphitic Fibers from Living Graphene Molecules
Aruna Zhamu, Bor Z. Jang
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,822,725Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 (a) A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite …
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-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.4 Schematic diagram illustrating a process of producing multiple continuous graphitic fibers from living GO molecules dispensed through multiple nozzles …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
FIG.6 (a) Tensile strength and (b) Young's modulus of the GO gel-derived unitary graphene- based continuous fibers plotted as a function of the final heat …
FIG.7 X-ray diff r action curves of (a) a GO filament (dried GO gel filament), (b) GO filament thermally reduced at 1 50* C (partially reduced), (c) highly reduced …
FIG.8 (a) Inter-graphene plane spacing measured by X-ray diffraction; (b) the oxygen content in the GO gel-derived unitary graphene filaments; and (c) …
FIG.9 Viscosity values of graphene gel plotted as a function of viscometer spindle speed (proportional to a shear rate): (a) linear-linear scale, (b) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A unitary graphene-based continuous graphitic fiber having an inter-planar spacing d oo 2 from 0.3354 nm to 0.4 nm as determined by X-ray diffraction and an oxygen content of 0.01 to 5 % by weight, wherein said graphene planes are parallel to one another and parallel to a fiber axis direction and said graphitic fiber contains no core-shell structure and no helically arranged graphene domains, wherein said unitary graphitic fiber is a single crystal or a poly-crystal graphene structure that has a thickness greater than 100 nm, a physical density no less than 1.7 g/cm 3, an electrical conductivity from 3,000 S/cm to 20,000 S/cm and a thermal conductivity from 600 W/mK to 1,805 W/mK, and said unitary graphene material has a preferred crystalline orientation, wherein said graphene planes are closely packed and parallel to one another. Previously presented
The continuous graphitic fiber of claim 1, wherein said inter- plane spacing d oo 2 is from 0.3354 nm to 0.36 nm and the oxygen content is from 0.01 to 2 % by weight. Previously presented
The continuous graphitic fiber of claim 1, having a cross-section that is circular, elliptical, rectangular, flat-shaped, or hollow. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness from 10 m to 100 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 10 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 1 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 100 nm. Original
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 to 1 % by weight, an inter-graphene spacing less than 0.345 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK and/or an electrical conductivity from 2,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 % to 0.01 %, an inter-graphene spacing less than 0.337 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK, and/or an electrical conductivity from 4,500 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content no greater than 0.001 %, an inter-graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.7, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, and/or an electrical conductivity from 7,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an inter- graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.4, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, and/or an electrical conductivity greater than 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits an inter-graphene spacing less than 0.337 nm and a mosaic spread value less than 1.0. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 40 % and/or a mosaic spread value less than 0.7. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 80 % and/or a mosaic spread value no greater than 0.4. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains chemically bonded graphene molecules or chemically merged graphene planes that are parallel to one another. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a first graphene domain containing bonded graphene planes parallel to one another and having a first crystallographic c-axis, and a second graphene domain containing bonded graphene planes parallel to one another and having a second crystallographic c-axis wherein the first crystallographic c-axis and the second crystallographic c-axis are inclined with respect to each other at an angle less than 10 degrees. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains no complete grain boundary therein, is a graphite single crystal, or a poly-crystal graphite structure with graphene molecules being oriented along a fiber axis direction. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 1 m to 10 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 10 m to 100 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size larger than 100 m. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a combination of sp 2 and sp 3 electronic configurations. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has a physical density greater than 1.7 g/cm 3, a Young's modulus greater than 60 GPa, and/or a tensile strength greater than 1.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 5,000 S/cm, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, a physical density greater than 1.8 g/cm 3, a Young's modulus greater than 200 GPa, and/or a tensile strength greater than 3.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 15,000 S/cm, a thermal conductivity from 1,500 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 300 GPa, and/or a tensile strength greater than 5.0 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 18,000 S/cm, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 600 GPa, and/or a tensile strength measured greater than 8.0 GPa. Previously presented
A fiber yarn or bundle comprising at least a continuous graphitic fiber of claim 1. Original
A fiber yarn or bundle comprising multiple continuous graphitic fibers of claim 1. Original
Materials described outside the worked examples.
unitary graphene-based continuous graphitic fiber
graphene oxide gel
Additional fabrication and treatment steps described in the patent.
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 |
|---|---|---|
inter-planar spacing d002 (claimed range) | 0.3354–0.4 nm | unitary graphene-based continuous graphitic fiber |
electrical conductivity (claimed range, claim 1) | 3000–20000 S/cm |
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US 10,822,725Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 (a) A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite …
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-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.4 Schematic diagram illustrating a process of producing multiple continuous graphitic fibers from living GO molecules dispensed through multiple nozzles …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
FIG.6 (a) Tensile strength and (b) Young's modulus of the GO gel-derived unitary graphene- based continuous fibers plotted as a function of the final heat …
FIG.7 X-ray diff r action curves of (a) a GO filament (dried GO gel filament), (b) GO filament thermally reduced at 1 50* C (partially reduced), (c) highly reduced …
FIG.8 (a) Inter-graphene plane spacing measured by X-ray diffraction; (b) the oxygen content in the GO gel-derived unitary graphene filaments; and (c) …
FIG.9 Viscosity values of graphene gel plotted as a function of viscometer spindle speed (proportional to a shear rate): (a) linear-linear scale, (b) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A unitary graphene-based continuous graphitic fiber having an inter-planar spacing d oo 2 from 0.3354 nm to 0.4 nm as determined by X-ray diffraction and an oxygen content of 0.01 to 5 % by weight, wherein said graphene planes are parallel to one another and parallel to a fiber axis direction and said graphitic fiber contains no core-shell structure and no helically arranged graphene domains, wherein said unitary graphitic fiber is a single crystal or a poly-crystal graphene structure that has a thickness greater than 100 nm, a physical density no less than 1.7 g/cm 3, an electrical conductivity from 3,000 S/cm to 20,000 S/cm and a thermal conductivity from 600 W/mK to 1,805 W/mK, and said unitary graphene material has a preferred crystalline orientation, wherein said graphene planes are closely packed and parallel to one another. Previously presented
The continuous graphitic fiber of claim 1, wherein said inter- plane spacing d oo 2 is from 0.3354 nm to 0.36 nm and the oxygen content is from 0.01 to 2 % by weight. Previously presented
The continuous graphitic fiber of claim 1, having a cross-section that is circular, elliptical, rectangular, flat-shaped, or hollow. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness from 10 m to 100 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 10 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 1 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 100 nm. Original
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 to 1 % by weight, an inter-graphene spacing less than 0.345 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK and/or an electrical conductivity from 2,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 % to 0.01 %, an inter-graphene spacing less than 0.337 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK, and/or an electrical conductivity from 4,500 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content no greater than 0.001 %, an inter-graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.7, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, and/or an electrical conductivity from 7,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an inter- graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.4, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, and/or an electrical conductivity greater than 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits an inter-graphene spacing less than 0.337 nm and a mosaic spread value less than 1.0. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 40 % and/or a mosaic spread value less than 0.7. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 80 % and/or a mosaic spread value no greater than 0.4. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains chemically bonded graphene molecules or chemically merged graphene planes that are parallel to one another. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a first graphene domain containing bonded graphene planes parallel to one another and having a first crystallographic c-axis, and a second graphene domain containing bonded graphene planes parallel to one another and having a second crystallographic c-axis wherein the first crystallographic c-axis and the second crystallographic c-axis are inclined with respect to each other at an angle less than 10 degrees. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains no complete grain boundary therein, is a graphite single crystal, or a poly-crystal graphite structure with graphene molecules being oriented along a fiber axis direction. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 1 m to 10 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 10 m to 100 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size larger than 100 m. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a combination of sp 2 and sp 3 electronic configurations. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has a physical density greater than 1.7 g/cm 3, a Young's modulus greater than 60 GPa, and/or a tensile strength greater than 1.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 5,000 S/cm, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, a physical density greater than 1.8 g/cm 3, a Young's modulus greater than 200 GPa, and/or a tensile strength greater than 3.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 15,000 S/cm, a thermal conductivity from 1,500 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 300 GPa, and/or a tensile strength greater than 5.0 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 18,000 S/cm, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 600 GPa, and/or a tensile strength measured greater than 8.0 GPa. Previously presented
A fiber yarn or bundle comprising at least a continuous graphitic fiber of claim 1. Original
A fiber yarn or bundle comprising multiple continuous graphitic fibers of claim 1. Original
Materials described outside the worked examples.
unitary graphene-based continuous graphitic fiber
graphene oxide gel
Additional fabrication and treatment steps described in the patent.
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 |
|---|---|---|
inter-planar spacing d002 (claimed range) | 0.3354–0.4 nm | unitary graphene-based continuous graphitic fiber |
electrical conductivity (claimed range, claim 1) | 3000–20000 S/cm |
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PROCESS FOR PRODUCING INTEGRAL GRAPHENE FILMS FROM FUNCTIONALIZED GRAPHENE SHEETS
INORGANIC COATING-PROTECTED UNITARY GRAPHENE MATERIAL FOR CONCENTRATED PHOTOVOLTAIC APPLICATIONS
Patent
Atlas literature
Patent
US 10,822,725Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 (a) A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite …
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-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.4 Schematic diagram illustrating a process of producing multiple continuous graphitic fibers from living GO molecules dispensed through multiple nozzles …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
FIG.6 (a) Tensile strength and (b) Young's modulus of the GO gel-derived unitary graphene- based continuous fibers plotted as a function of the final heat …
FIG.7 X-ray diff r action curves of (a) a GO filament (dried GO gel filament), (b) GO filament thermally reduced at 1 50* C (partially reduced), (c) highly reduced …
FIG.8 (a) Inter-graphene plane spacing measured by X-ray diffraction; (b) the oxygen content in the GO gel-derived unitary graphene filaments; and (c) …
FIG.9 Viscosity values of graphene gel plotted as a function of viscometer spindle speed (proportional to a shear rate): (a) linear-linear scale, (b) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A unitary graphene-based continuous graphitic fiber having an inter-planar spacing d oo 2 from 0.3354 nm to 0.4 nm as determined by X-ray diffraction and an oxygen content of 0.01 to 5 % by weight, wherein said graphene planes are parallel to one another and parallel to a fiber axis direction and said graphitic fiber contains no core-shell structure and no helically arranged graphene domains, wherein said unitary graphitic fiber is a single crystal or a poly-crystal graphene structure that has a thickness greater than 100 nm, a physical density no less than 1.7 g/cm 3, an electrical conductivity from 3,000 S/cm to 20,000 S/cm and a thermal conductivity from 600 W/mK to 1,805 W/mK, and said unitary graphene material has a preferred crystalline orientation, wherein said graphene planes are closely packed and parallel to one another. Previously presented
The continuous graphitic fiber of claim 1, wherein said inter- plane spacing d oo 2 is from 0.3354 nm to 0.36 nm and the oxygen content is from 0.01 to 2 % by weight. Previously presented
The continuous graphitic fiber of claim 1, having a cross-section that is circular, elliptical, rectangular, flat-shaped, or hollow. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness from 10 m to 100 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 10 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 1 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 100 nm. Original
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 to 1 % by weight, an inter-graphene spacing less than 0.345 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK and/or an electrical conductivity from 2,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 % to 0.01 %, an inter-graphene spacing less than 0.337 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK, and/or an electrical conductivity from 4,500 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content no greater than 0.001 %, an inter-graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.7, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, and/or an electrical conductivity from 7,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an inter- graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.4, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, and/or an electrical conductivity greater than 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits an inter-graphene spacing less than 0.337 nm and a mosaic spread value less than 1.0. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 40 % and/or a mosaic spread value less than 0.7. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 80 % and/or a mosaic spread value no greater than 0.4. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains chemically bonded graphene molecules or chemically merged graphene planes that are parallel to one another. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a first graphene domain containing bonded graphene planes parallel to one another and having a first crystallographic c-axis, and a second graphene domain containing bonded graphene planes parallel to one another and having a second crystallographic c-axis wherein the first crystallographic c-axis and the second crystallographic c-axis are inclined with respect to each other at an angle less than 10 degrees. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains no complete grain boundary therein, is a graphite single crystal, or a poly-crystal graphite structure with graphene molecules being oriented along a fiber axis direction. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 1 m to 10 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 10 m to 100 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size larger than 100 m. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a combination of sp 2 and sp 3 electronic configurations. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has a physical density greater than 1.7 g/cm 3, a Young's modulus greater than 60 GPa, and/or a tensile strength greater than 1.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 5,000 S/cm, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, a physical density greater than 1.8 g/cm 3, a Young's modulus greater than 200 GPa, and/or a tensile strength greater than 3.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 15,000 S/cm, a thermal conductivity from 1,500 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 300 GPa, and/or a tensile strength greater than 5.0 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 18,000 S/cm, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 600 GPa, and/or a tensile strength measured greater than 8.0 GPa. Previously presented
A fiber yarn or bundle comprising at least a continuous graphitic fiber of claim 1. Original
A fiber yarn or bundle comprising multiple continuous graphitic fibers of claim 1. Original
Materials described outside the worked examples.
unitary graphene-based continuous graphitic fiber
graphene oxide gel
Additional fabrication and treatment steps described in the patent.
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 |
|---|---|---|
inter-planar spacing d002 (claimed range) | 0.3354–0.4 nm | unitary graphene-based continuous graphitic fiber |
electrical conductivity (claimed range, claim 1) | 3000–20000 S/cm |
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PROCESS FOR PRODUCING INTEGRAL GRAPHENE FILMS FROM FUNCTIONALIZED GRAPHENE SHEETS
INORGANIC COATING-PROTECTED UNITARY GRAPHENE MATERIAL FOR CONCENTRATED PHOTOVOLTAIC APPLICATIONS
Patent
Atlas literature
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US 10,822,725Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 (a) A flow chart illustrating various prior art processes of producing exfoliated graphite products (flexible graphite foils and flexible graphite …
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-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.4 Schematic diagram illustrating a process of producing multiple continuous graphitic fibers from living GO molecules dispensed through multiple nozzles …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
FIG.6 (a) Tensile strength and (b) Young's modulus of the GO gel-derived unitary graphene- based continuous fibers plotted as a function of the final heat …
FIG.7 X-ray diff r action curves of (a) a GO filament (dried GO gel filament), (b) GO filament thermally reduced at 1 50* C (partially reduced), (c) highly reduced …
FIG.8 (a) Inter-graphene plane spacing measured by X-ray diffraction; (b) the oxygen content in the GO gel-derived unitary graphene filaments; and (c) …
FIG.9 Viscosity values of graphene gel plotted as a function of viscometer spindle speed (proportional to a shear rate): (a) linear-linear scale, (b) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A unitary graphene-based continuous graphitic fiber having an inter-planar spacing d oo 2 from 0.3354 nm to 0.4 nm as determined by X-ray diffraction and an oxygen content of 0.01 to 5 % by weight, wherein said graphene planes are parallel to one another and parallel to a fiber axis direction and said graphitic fiber contains no core-shell structure and no helically arranged graphene domains, wherein said unitary graphitic fiber is a single crystal or a poly-crystal graphene structure that has a thickness greater than 100 nm, a physical density no less than 1.7 g/cm 3, an electrical conductivity from 3,000 S/cm to 20,000 S/cm and a thermal conductivity from 600 W/mK to 1,805 W/mK, and said unitary graphene material has a preferred crystalline orientation, wherein said graphene planes are closely packed and parallel to one another. Previously presented
The continuous graphitic fiber of claim 1, wherein said inter- plane spacing d oo 2 is from 0.3354 nm to 0.36 nm and the oxygen content is from 0.01 to 2 % by weight. Previously presented
The continuous graphitic fiber of claim 1, having a cross-section that is circular, elliptical, rectangular, flat-shaped, or hollow. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness from 10 m to 100 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 10 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 1 m. Original
The continuous graphitic fiber of claim 1, having a diameter or thickness less than 100 nm. Original
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 to 1 % by weight, an inter-graphene spacing less than 0.345 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK and/or an electrical conductivity from 2,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content from 0.001 % to 0.01 %, an inter-graphene spacing less than 0.337 nm, a thermal conductivity from 1,000 W/mK to 1,700 W/mK, and/or an electrical conductivity from 4,500 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an oxygen content no greater than 0.001 %, an inter-graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.7, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, and/or an electrical conductivity from 7,000 S/cm to 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, having an inter- graphene spacing less than 0.336 nm, a mosaic spread value no greater than 0.4, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, and/or an electrical conductivity greater than 12,000 S/cm. Previously presented
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits an inter-graphene spacing less than 0.337 nm and a mosaic spread value less than 1.0. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 40 % and/or a mosaic spread value less than 0.7. Original
The continuous graphitic fiber of claim 1, wherein the continuous graphitic fiber exhibits a degree of graphitization no less than 80 % and/or a mosaic spread value no greater than 0.4. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains chemically bonded graphene molecules or chemically merged graphene planes that are parallel to one another. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a first graphene domain containing bonded graphene planes parallel to one another and having a first crystallographic c-axis, and a second graphene domain containing bonded graphene planes parallel to one another and having a second crystallographic c-axis wherein the first crystallographic c-axis and the second crystallographic c-axis are inclined with respect to each other at an angle less than 10 degrees. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains no complete grain boundary therein, is a graphite single crystal, or a poly-crystal graphite structure with graphene molecules being oriented along a fiber axis direction. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 1 m to 10 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size from 10 m to 100 m. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber is a polycrystal graphitic structure having a grain size larger than 100 m. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber contains a combination of sp 2 and sp 3 electronic configurations. Original
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has a physical density greater than 1.7 g/cm 3, a Young's modulus greater than 60 GPa, and/or a tensile strength greater than 1.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 5,000 S/cm, a thermal conductivity from 1,000 W/mK to 1,805 W/mK, a physical density greater than 1.8 g/cm 3, a Young's modulus greater than 200 GPa, and/or a tensile strength greater than 3.2 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 15,000 S/cm, a thermal conductivity from 1,500 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 300 GPa, and/or a tensile strength greater than 5.0 GPa. Previously presented
The continuous graphitic fiber of claim 1, wherein said continuous graphitic fiber has an electrical conductivity greater than 18,000 S/cm, a thermal conductivity from 1,700 W/mK to 1,805 W/mK, a physical density greater than 1.9 g/cm 3, a Young's modulus greater than 600 GPa, and/or a tensile strength measured greater than 8.0 GPa. Previously presented
A fiber yarn or bundle comprising at least a continuous graphitic fiber of claim 1. Original
A fiber yarn or bundle comprising multiple continuous graphitic fibers of claim 1. Original
Materials described outside the worked examples.
unitary graphene-based continuous graphitic fiber
graphene oxide gel
Additional fabrication and treatment steps described in the patent.
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 |
|---|---|---|
inter-planar spacing d002 (claimed range) | 0.3354–0.4 nm | unitary graphene-based continuous graphitic fiber |
electrical conductivity (claimed range, claim 1) | 3000–20000 S/cm |
Related documents with shared materials, methods, properties, or citations.
PROCESS FOR PRODUCING INTEGRAL GRAPHENE FILMS FROM FUNCTIONALIZED GRAPHENE SHEETS
INORGANIC COATING-PROTECTED UNITARY GRAPHENE MATERIAL FOR CONCENTRATED PHOTOVOLTAIC APPLICATIONS
graphite intercalation compound (GIC)/graphite oxide (GO)
FIG.3 (a) A SEM image of a GO-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
unitary graphene-based continuous graphitic fiber |
thermal conductivity (claimed range, claim 1) | 600–1805 W/mK | unitary graphene-based continuous graphitic fiber |
physical density no less than 1.7 g/cm3 (claim 1) | ≥ 1.7 g/cm3 | unitary graphene-based continuous graphitic fiber |
oxygen content (claimed range, claim 1) | 0.01–5 wt% | unitary graphene-based continuous graphitic fiber |
Thickness | 0.4–1.2 nm | — |
Thickness | 0.3354–0.36 nm | — |
Duration | 15–120 s | — |
Duration | 0.2–1 hour | — |
Thickness | 0.6–1 nm | — |
— | 50–100 W | — |
— | 1000–1200 W | — |
Duration | 1–4 hours | — |
Duration | 1–2 hours | — |
Duration | 0.5–2 hours | — |
— | 140–300 W | — |
— | 10–30 W | — |
Duration | 1–5 hours | — |
— | 600–885 W | — |
Thickness | ≤ 0.344 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 1 nm | — |
— | ≤ 0.1 ev | — |
— | ≤ 600 W | — |
— | ≥ 1600 W | — |
— | ≥ 1800 W | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 1 cm | — |
— | ≥ 420 W | — |
— | ≥ 950 W | — |
Thickness | ≤ 0.345 nm | — |
Thickness | ≤ 0.337 nm | — |
Thickness | ≤ 0.336 nm | — |
Thickness | ≥ 1 nm | — |
graphite intercalation compound (GIC)/graphite oxide (GO)
FIG.3 (a) A SEM image of a GO-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
unitary graphene-based continuous graphitic fiber |
thermal conductivity (claimed range, claim 1) | 600–1805 W/mK | unitary graphene-based continuous graphitic fiber |
physical density no less than 1.7 g/cm3 (claim 1) | ≥ 1.7 g/cm3 | unitary graphene-based continuous graphitic fiber |
oxygen content (claimed range, claim 1) | 0.01–5 wt% | unitary graphene-based continuous graphitic fiber |
Thickness | 0.4–1.2 nm | — |
Thickness | 0.3354–0.36 nm | — |
Duration | 15–120 s | — |
Duration | 0.2–1 hour | — |
Thickness | 0.6–1 nm | — |
— | 50–100 W | — |
— | 1000–1200 W | — |
Duration | 1–4 hours | — |
Duration | 1–2 hours | — |
Duration | 0.5–2 hours | — |
— | 140–300 W | — |
— | 10–30 W | — |
Duration | 1–5 hours | — |
— | 600–885 W | — |
Thickness | ≤ 0.344 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 1 nm | — |
— | ≤ 0.1 ev | — |
— | ≤ 600 W | — |
— | ≥ 1600 W | — |
— | ≥ 1800 W | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 1 cm | — |
— | ≥ 420 W | — |
— | ≥ 950 W | — |
Thickness | ≤ 0.345 nm | — |
Thickness | ≤ 0.337 nm | — |
Thickness | ≤ 0.336 nm | — |
Thickness | ≥ 1 nm | — |
graphite intercalation compound (GIC)/graphite oxide (GO)
FIG.3 (a) A SEM image of a GO-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
unitary graphene-based continuous graphitic fiber |
thermal conductivity (claimed range, claim 1) | 600–1805 W/mK | unitary graphene-based continuous graphitic fiber |
physical density no less than 1.7 g/cm3 (claim 1) | ≥ 1.7 g/cm3 | unitary graphene-based continuous graphitic fiber |
oxygen content (claimed range, claim 1) | 0.01–5 wt% | unitary graphene-based continuous graphitic fiber |
Thickness | 0.4–1.2 nm | — |
Thickness | 0.3354–0.36 nm | — |
Duration | 15–120 s | — |
Duration | 0.2–1 hour | — |
Thickness | 0.6–1 nm | — |
— | 50–100 W | — |
— | 1000–1200 W | — |
Duration | 1–4 hours | — |
Duration | 1–2 hours | — |
Duration | 0.5–2 hours | — |
— | 140–300 W | — |
— | 10–30 W | — |
Duration | 1–5 hours | — |
— | 600–885 W | — |
Thickness | ≤ 0.344 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 1 nm | — |
— | ≤ 0.1 ev | — |
— | ≤ 600 W | — |
— | ≥ 1600 W | — |
— | ≥ 1800 W | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 1 cm | — |
— | ≥ 420 W | — |
— | ≥ 950 W | — |
Thickness | ≤ 0.345 nm | — |
Thickness | ≤ 0.337 nm | — |
Thickness | ≤ 0.336 nm | — |
Thickness | ≥ 1 nm | — |
graphite intercalation compound (GIC)/graphite oxide (GO)
FIG.3 (a) A SEM image of a GO-derived graphene fiber. Original graphite particles having multiple graphene planes (with a length/width of 30 nm⁻² p m) were …
FIG.5 (a) Thermal conductivity values and (b) electrical conductivity values of the GO gel- derived unitary graphene-based continuous fibers and the fibers …
unitary graphene-based continuous graphitic fiber |
thermal conductivity (claimed range, claim 1) | 600–1805 W/mK | unitary graphene-based continuous graphitic fiber |
physical density no less than 1.7 g/cm3 (claim 1) | ≥ 1.7 g/cm3 | unitary graphene-based continuous graphitic fiber |
oxygen content (claimed range, claim 1) | 0.01–5 wt% | unitary graphene-based continuous graphitic fiber |
Thickness | 0.4–1.2 nm | — |
Thickness | 0.3354–0.36 nm | — |
Duration | 15–120 s | — |
Duration | 0.2–1 hour | — |
Thickness | 0.6–1 nm | — |
— | 50–100 W | — |
— | 1000–1200 W | — |
Duration | 1–4 hours | — |
Duration | 1–2 hours | — |
Duration | 0.5–2 hours | — |
— | 140–300 W | — |
— | 10–30 W | — |
Duration | 1–5 hours | — |
— | 600–885 W | — |
Thickness | ≤ 0.344 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 1 nm | — |
— | ≤ 0.1 ev | — |
— | ≤ 600 W | — |
— | ≥ 1600 W | — |
— | ≥ 1800 W | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 1 cm | — |
— | ≥ 420 W | — |
— | ≥ 950 W | — |
Thickness | ≤ 0.345 nm | — |
Thickness | ≤ 0.337 nm | — |
Thickness | ≤ 0.336 nm | — |
Thickness | ≥ 1 nm | — |