Title: THREE-DIMENSIONAL GRAPHENE FRAMEWORK-BASED HIGH-PERFORMANCE SUPERCAPACITORS a C,.omrs Fig. 1 b

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Patent

Atlas literature

Patent

US 10,692,660

Title: THREE-DIMENSIONAL GRAPHENE FRAMEWORK-BASED HIGH-PERFORMANCE SUPERCAPACITORS a C,.omrs Fig. 1 b

DUAN, Xiangfeng, XU, Yuxi

14 May 2015·US

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

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FIG. 30

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

8 independent · 25 dependent

1
Independentgraphene framework filmelectrolyteelectrochemical capacitor (supercapacitor)
An electrochemical capacitor comprising: a pair of electrodes; and an electrolyte disposed between the pair of electrodes, wherein at least a ﬁrst electrode of the pair of electrodes includes a graphene framework ﬁlm, and the graphene framework ﬁlm includes interconnected graphene sheets with nanopores formed in and extending through the graphene sheets, and at least one of the nanopores has a size in the range of 1 nm to 100 nm, and with pores between the graphene sheets, and at least one of the pores has a size in the range of 1 p m to 10 pm. Currently amended
1. 2
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the nanopores are formed in basal planes of the graphene sheets. Original
2. 4
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein at least one of the nanopores has a size in the range of 1 nm to 10 nm. Original
3. 5
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the graphene framework ﬁlm has a speciﬁc surface area of 1200 m 2 g- 1 or more. Original
4. 6
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the graphene framework ﬁlm has a packing density of 0.3 g c m- 3 or more. Original
5. 7
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the graphene framework ﬁlm has a packing density of 0.5 g c m- 3 or more. Original
6. 8
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the graphene framework ﬁlm has a packing density of 0.7 g c m- 3 or more. Original
7. 9
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the graphene framework ﬁlm has an electrical conductivity of 500 S m-1 or more. Original
8. 10
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the ﬁrst electrode has a gravimetric capacitance of 180 F g-1 or more, at a current density of 1 A g-1. Original
9. 11
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the ﬁrst electrode has a volumetric capacitance of 100 F c m- 3 or more, at a current density of 1 A g-1. Original
10. 12
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the ﬁrst electrode has a gravimetric capacitance of 180 F g-1 or more and a volumetric capacitance of 100 F c m- 3 or more, at a current density of 1 A g-1. Original
11. 13
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the ﬁrst electrode has a gravimetric capacitance of 280 F g-1 or more and a volumetric capacitance of 210 F c m- 3 or more, at a current density of 1 A g-1. Original
12. 14
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the ﬁrst electrode has a gravimetric capacitance of 250 F g-1 or more and a volumetric capacitance of 180 F c m- 3 or more, at a current density of 10 A g-1. Original
13. 15
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the ﬁrst electrode has a gravimetric energy density of 120 Wh kg ' or more and a volumetric energy density of 90 Wh L-or more. Original
14. 16
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  (Origina l) The electrochemical capacitor of claim 1, wherein the electrochemical capacitor has a gravimetric energy density of 20 Wh kg -' or more and a volumetric energy density of 30 Wh L-' or more, based on a total weight or volume of the entire electrochemical capacitor. Original
15. 17
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1. wherein the electrochemical capacitor has a gravimetric energy density of 30 Wh kg- ' or more and a volumetric energy density of 40 Wh L-' or more, based on a total weight or volume of the entire electrochemical capacitor. Original
16. 18
  Dependent← claim 1graphene framework filmpseudocapacitive material/metal oxide nanoparticleselectrochemical capacitor (supercapacitor)
  (Origina l) The electrochemical capacitor of claim 1, wherein the ﬁrst electrode further includes a pseudocapacitive material incorporated in the graphene framework ﬁlm. Original
17. 19
  Dependent← claim 1pseudocapacitive material/metal oxide nanoparticleselectrochemical capacitor (supercapacitor)
  The electroche m ical capacitor of claim 1, wherein the pseudocapacitive material includes nanoparticles of a metal oxide. Original
18. 32
  Dependent← claim 1graphene framework filmelectrochemical capacitor (supercapacitor)
  The electrochemical capacitor of claim 1, wherein the graphene framework ﬁlm is a ﬁrst graphene framework ﬁlm, and a second electrode of the pair of electrodes includes a second graphene framework ﬁlm. Previously presented
3
Independent
Canceled
20
Independentgraphene-based gelelectrode structure
An electrode structure comprising: a current collector; and a graphene-based gel connected to the current collector, wherein the graphene-based gel incl u des interconnected graphene sheets with pores between the graphene sheets, at least one of the pores has a size in the range of 1 p m to 10 p m, and the g r aphene-based gel has a packing density of 0.1 g cm -' or more, wherein nanopores are formed in and extend through basal planes of the graphene sheets. Currently amended
1. 21
  Dependent← claim 20graphene-based gelelectrode structure
  The electrode structure of claim 20, wherein the packing density is 0.5 g cm⁻³ or more. Original
2. 23
  Dependent← claim 20graphene-based gelelectrode structure
  The electrode structure of claim 20, wherein at least one of the nanopores has a size in the range of 1 nm to 100 nm. Previously presented
22
Independent
Canceled
24
Independentgraphene-based gelelectrochemically active molecular specieselectrode structure
An electrode structure comprising: a current collector; and a graphene-based gel connected to the current collector, wherein the graphene-based gel includes (a) interconnected graphene sheets with pores between the graphene sheets and (b) electrochemically active molecular species adsorbed on the graphene sheets, and at least one of the pores has a size in the range of 1 p m to 10 pm. Currently amended
1. 25
  Dependent← claim 24electrochemically active molecular specieselectrode structure
  The electrode structure of claim 24, wherein the electrochemically active molecular species are aromatic. Original
2. 26
  Dependent← claim 24electrochemically active molecular specieselectrode structure
  The electrode structure of claim 24, wherein the electrochemically active molecular species have a molecular weight up to 1000 g mo l- 1. Original
3. 27
  Dependent← claim 24electrochemically active molecular specieselectrode structure
  The electrode structure of claim 24, wherein the electrochemically active molecular species include functionalizing moieties to allow adsorption on surfaces of the graphene sheets. Original
28
Independentgraphene oxide sheetsgraphene framework film
A method of forming a graphene framework, comprising: heating a mixture including an etchant and graphene oxide sheets under reducing conditions to yield reduction of the graphene oxide sheets to graphene sheets, formation of nanopores in and extending through the graphene sheets, and self-assembly of the graphene sheets into a graphene framework. Previously presented
1. 29
  Dependent← claim 28H₂O₂
  The method of claim 28, wherein the etchant is hydrogen peroxide. Original
2. 30
  Dependent← claim 28graphene framework film
  The method of claim 28, wherein heating is performed in an autoclave at a temperature from 100 ° C to 250 °C. Original
31
Independentgraphene oxide sheetsgraphene framework film
A method of forming a graphene framework, comprising: forming nanopores in and extending through graphene oxide sheets; and heating a dispersion of the graphene oxide sheets under reducing conditions to yield reduction of the graphene oxide sheets to graphene sheets and self-assembly of the graphene sheets into a graphene framework. Previously presented
33
Independent
Canceled

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

electrochemical capacitor (supercapacitor)

electrolyteelectrolyte

graphene framework filmelectrode

electrode structure

graphene-based gelelectrode active material

current_collectorcurrent collector

Materials

Materials described outside the worked examples.

graphene framework film

Electrode Material

electrolyte

Electrolyte

Process steps

Additional fabrication and treatment steps described in the patent.

Hydrothermal Reduction And Self Assembly

Step 1

Temperature

100, 250°C

Ambient

reducing conditions

Process details

steps:one-step: simultaneous reduction of graphene oxide, nanopore formation, and self-assembly into graphene framework

Characterization

Measurements and analyses referenced in the patent, with their drawing references.

durability test

Durability

durability of the device was further characterized by galvanostatic charge/discharge tests up to 10000 cycles at a high current density of about 10 A/g under about 150 bending angle (Fig. 21d). About 13 % decay in speciﬁc capacitance was observed, highlighting

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Specific Surface Area	≥ 1200 m2 g-1	graphene framework film
Packing Density	≥ 0.3 g cm⁻³

Why these are connected

Related documents with shared materials, methods, properties, or citations.

Title: THREE-DIMENSIONAL GRAPHENE FRAMEWORK-BASED HIGH-PERFORMANCE SUPERCAPACITORS a C,.omrs Fig. 1 b | Matter42 Literature