Patent
US 9,165,721INKJET-PRINTED FLEXIBLE ELECTRONIC COMPONENTS FROM GRAPHENE OXIDE
Woo Young Lee
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,165,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. The water-based graphene oxide ink was stable for months, mostly due to the hydroxyl, epoxide and carboxyl (not shown) functional groups naturally …
FIG. 2 is a microphotograph of spherical ink droplets deposited by a conventional inkjet printer according to a method of the present invention; [0017]
FIG. 3 is a microphotograph of graphene oxide dots formed on a substrate by evaporation of solvent from ink drops deposited by a conventional inkjet printer …
FIG. 4 is an enlargement of a portion of
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIG. 7) demonstrating 95 % capacitance retention. The charging/discharging curves were fairly linear (not shown). This capacitance compares well with those …
FIG. 8 is a Ragone plot of the specific power against the specific energy of the electrodes of
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
FIG. 12 is a plot of the pore size distribution. It may be noted that the ranges of pore sizes are rather narrow. The distribution of surface area and specific …
FIG. 13. Referring to
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
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A capacitor, comprising a first inkjet-printed electrode formed on a surface of a substrate, said first electrode including a first plurality of overlapping dot-like structures which include graphene flakes; a second inkjet-printed electrode formed on said surface of said substrate, said second electrode including a second plurality of overlapping dot-like structures which include graphene flakes, wherein said first and second electrodes have a fingered geometry and are spaced away from each other in a cross-finger interdigitated arrangement.
The capacitor of Claim 17, further comprising first and second current collectors, wherein said first and second electrodes are respectively in contact with said first and second current collectors.
The capacitor of Claim 17, wherein said first and second electrodes are formed by a process including the steps of depositing graphene oxide flakes in droplets of liquid onto said surface of said substrate so as to form said overlapping dot-like structures which include said graphene oxide flakes, and then reducing at least some of said graphene oxide flakes so to convert them to graphene flakes, thereby making said first and second electrodes electrically conductive. NJ 228036887 v1 3
Layer stacks claimed or described, ordered top of device to substrate.
inkjet-printed graphene interdigitated capacitor (supercapacitor)
Materials described outside the worked examples.
graphene flakes
graphene oxide flakes
electrolyte
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
BET specific surface area of carbon nanotubes (prior art background value) | 1320 m2/g | — |
BET specific surface area of graphene (prior art background value) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,165,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. The water-based graphene oxide ink was stable for months, mostly due to the hydroxyl, epoxide and carboxyl (not shown) functional groups naturally …
FIG. 2 is a microphotograph of spherical ink droplets deposited by a conventional inkjet printer according to a method of the present invention; [0017]
FIG. 3 is a microphotograph of graphene oxide dots formed on a substrate by evaporation of solvent from ink drops deposited by a conventional inkjet printer …
FIG. 4 is an enlargement of a portion of
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIG. 7) demonstrating 95 % capacitance retention. The charging/discharging curves were fairly linear (not shown). This capacitance compares well with those …
FIG. 8 is a Ragone plot of the specific power against the specific energy of the electrodes of
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
FIG. 12 is a plot of the pore size distribution. It may be noted that the ranges of pore sizes are rather narrow. The distribution of surface area and specific …
FIG. 13. Referring to
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
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A capacitor, comprising a first inkjet-printed electrode formed on a surface of a substrate, said first electrode including a first plurality of overlapping dot-like structures which include graphene flakes; a second inkjet-printed electrode formed on said surface of said substrate, said second electrode including a second plurality of overlapping dot-like structures which include graphene flakes, wherein said first and second electrodes have a fingered geometry and are spaced away from each other in a cross-finger interdigitated arrangement.
The capacitor of Claim 17, further comprising first and second current collectors, wherein said first and second electrodes are respectively in contact with said first and second current collectors.
The capacitor of Claim 17, wherein said first and second electrodes are formed by a process including the steps of depositing graphene oxide flakes in droplets of liquid onto said surface of said substrate so as to form said overlapping dot-like structures which include said graphene oxide flakes, and then reducing at least some of said graphene oxide flakes so to convert them to graphene flakes, thereby making said first and second electrodes electrically conductive. NJ 228036887 v1 3
Layer stacks claimed or described, ordered top of device to substrate.
inkjet-printed graphene interdigitated capacitor (supercapacitor)
Materials described outside the worked examples.
graphene flakes
graphene oxide flakes
electrolyte
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
BET specific surface area of carbon nanotubes (prior art background value) | 1320 m2/g | — |
BET specific surface area of graphene (prior art background value) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,165,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. The water-based graphene oxide ink was stable for months, mostly due to the hydroxyl, epoxide and carboxyl (not shown) functional groups naturally …
FIG. 2 is a microphotograph of spherical ink droplets deposited by a conventional inkjet printer according to a method of the present invention; [0017]
FIG. 3 is a microphotograph of graphene oxide dots formed on a substrate by evaporation of solvent from ink drops deposited by a conventional inkjet printer …
FIG. 4 is an enlargement of a portion of
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIG. 7) demonstrating 95 % capacitance retention. The charging/discharging curves were fairly linear (not shown). This capacitance compares well with those …
FIG. 8 is a Ragone plot of the specific power against the specific energy of the electrodes of
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
FIG. 12 is a plot of the pore size distribution. It may be noted that the ranges of pore sizes are rather narrow. The distribution of surface area and specific …
FIG. 13. Referring to
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
canceled
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canceled
canceled
canceled
canceled
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A capacitor, comprising a first inkjet-printed electrode formed on a surface of a substrate, said first electrode including a first plurality of overlapping dot-like structures which include graphene flakes; a second inkjet-printed electrode formed on said surface of said substrate, said second electrode including a second plurality of overlapping dot-like structures which include graphene flakes, wherein said first and second electrodes have a fingered geometry and are spaced away from each other in a cross-finger interdigitated arrangement.
The capacitor of Claim 17, further comprising first and second current collectors, wherein said first and second electrodes are respectively in contact with said first and second current collectors.
The capacitor of Claim 17, wherein said first and second electrodes are formed by a process including the steps of depositing graphene oxide flakes in droplets of liquid onto said surface of said substrate so as to form said overlapping dot-like structures which include said graphene oxide flakes, and then reducing at least some of said graphene oxide flakes so to convert them to graphene flakes, thereby making said first and second electrodes electrically conductive. NJ 228036887 v1 3
Layer stacks claimed or described, ordered top of device to substrate.
inkjet-printed graphene interdigitated capacitor (supercapacitor)
Materials described outside the worked examples.
graphene flakes
graphene oxide flakes
electrolyte
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
BET specific surface area of carbon nanotubes (prior art background value) | 1320 m2/g | — |
BET specific surface area of graphene (prior art background value) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,165,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. The water-based graphene oxide ink was stable for months, mostly due to the hydroxyl, epoxide and carboxyl (not shown) functional groups naturally …
FIG. 2 is a microphotograph of spherical ink droplets deposited by a conventional inkjet printer according to a method of the present invention; [0017]
FIG. 3 is a microphotograph of graphene oxide dots formed on a substrate by evaporation of solvent from ink drops deposited by a conventional inkjet printer …
FIG. 4 is an enlargement of a portion of
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIG. 7) demonstrating 95 % capacitance retention. The charging/discharging curves were fairly linear (not shown). This capacitance compares well with those …
FIG. 8 is a Ragone plot of the specific power against the specific energy of the electrodes of
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
FIG. 12 is a plot of the pore size distribution. It may be noted that the ranges of pore sizes are rather narrow. The distribution of surface area and specific …
FIG. 13. Referring to
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
canceled
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canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
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A capacitor, comprising a first inkjet-printed electrode formed on a surface of a substrate, said first electrode including a first plurality of overlapping dot-like structures which include graphene flakes; a second inkjet-printed electrode formed on said surface of said substrate, said second electrode including a second plurality of overlapping dot-like structures which include graphene flakes, wherein said first and second electrodes have a fingered geometry and are spaced away from each other in a cross-finger interdigitated arrangement.
The capacitor of Claim 17, further comprising first and second current collectors, wherein said first and second electrodes are respectively in contact with said first and second current collectors.
The capacitor of Claim 17, wherein said first and second electrodes are formed by a process including the steps of depositing graphene oxide flakes in droplets of liquid onto said surface of said substrate so as to form said overlapping dot-like structures which include said graphene oxide flakes, and then reducing at least some of said graphene oxide flakes so to convert them to graphene flakes, thereby making said first and second electrodes electrically conductive. NJ 228036887 v1 3
Layer stacks claimed or described, ordered top of device to substrate.
inkjet-printed graphene interdigitated capacitor (supercapacitor)
Materials described outside the worked examples.
graphene flakes
graphene oxide flakes
electrolyte
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
BET specific surface area of carbon nanotubes (prior art background value) | 1320 m2/g | — |
BET specific surface area of graphene (prior art background value) |
Related documents with shared materials, methods, properties, or citations.
graphene oxide ink
graphene oxide
metal nanoparticles
metal oxide nanoparticles
polymer nanoparticles
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
| 2630 m2/g |
| — |
bimodal pore sizes of inkjet-printed graphene electrode | — | graphene flakes |
Voltage | 0.01–0.5 V | — |
Pressure | 10–12 mPa | — |
Thickness | 1.5–2.2 nm | — |
Thickness | 11–36 nm | — |
Duration | 4–12 hours | — |
graphene oxide ink
graphene oxide
metal nanoparticles
metal oxide nanoparticles
polymer nanoparticles
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
| 2630 m2/g |
| — |
bimodal pore sizes of inkjet-printed graphene electrode | — | graphene flakes |
Voltage | 0.01–0.5 V | — |
Pressure | 10–12 mPa | — |
Thickness | 1.5–2.2 nm | — |
Thickness | 11–36 nm | — |
Duration | 4–12 hours | — |
graphene oxide ink
graphene oxide
metal nanoparticles
metal oxide nanoparticles
polymer nanoparticles
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
| 2630 m2/g |
| — |
bimodal pore sizes of inkjet-printed graphene electrode | — | graphene flakes |
Voltage | 0.01–0.5 V | — |
Pressure | 10–12 mPa | — |
Thickness | 1.5–2.2 nm | — |
Thickness | 11–36 nm | — |
Duration | 4–12 hours | — |
graphene oxide ink
graphene oxide
metal nanoparticles
metal oxide nanoparticles
polymer nanoparticles
FIG. 5 was about 50 pm. The thickness of the graphene oxide deposit can also be controlled by varying droplet sizes and lateral spacing of the droplets. [0034] …
FIG. 6; [0023] FI G. 9 is a scanning electron microscopic graph (SEM) of the top surface of a 100-pass inkjet-printed graphene structure showing corrugations …
FIGS. 9, 10 and 11 are SEM images of 100 -pass inkjet-printed graphene structures 24, 26.
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 10 NJ 228504179 v1 8). A comparison of selected properties of graphene made by powder methods and printed graphene is presented in Table 1, below. Table 1 …
FIG. 11 is a SEM of a cross-section of a 100-pass inkjet-printed graphene structure made according to an embodiment of the present invention, showing porous …
| 2630 m2/g |
| — |
bimodal pore sizes of inkjet-printed graphene electrode | — | graphene flakes |
Voltage | 0.01–0.5 V | — |
Pressure | 10–12 mPa | — |
Thickness | 1.5–2.2 nm | — |
Thickness | 11–36 nm | — |
Duration | 4–12 hours | — |