Cellular Graphene Films

Richard Barry Kaner

Patent

Atlas literature

Patent

US 10,655,020

Cellular Graphene Films

Richard Barry Kaner

Drawings

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

FIG. 1

FIG. 1 shows an exemplary schematic illustration of the formation of a porous graphene 25 ﬁlm through pre-reduction, ﬁltration and freeze-casting, an exemplary …

FIG. 2

FIG. 3

FIG. 3 shows an exemplary Randles equivalent circuit of a superconductor. 30 [00140] FIG s. 4A-B show an exemplary schematic illustration of the interfacial …

FIG. 4

FIG. 5

FIG. 5 shows a schematic illustration of an exemplary structure of a symmetric two- electrode supercapacitor. [00142] FIG s. 6A-D show scanning electron …

FIG. 6

FIG. 7

FIG. 8

FIG. 9

FIG. 10

FIG. 10 A-D, the pore sizes of the exemplary 3D porous RGO ﬁlm 1001 are in the range of hundreds nanometers to several micrometers and the pore walls consist …

FIG. 11

FIG. 11 shows an exemplary atomic-force microscopy (AFM) image of GO sheets. 15 [00148] FIGs. 12A-B show an exemplary height distribution diagram and an …

FIG. 12

FIG. 13

FIG. 13 shows x-ray power diﬀraction (XRD) patterns for the exemplary samples of GO, pre-reduced GO, and 3D porous RGO ﬁlm under diﬀerent reduction procedures. …

FIG. 14

FIG. 15

FIG. 15 shows Raman spectra for exemplary GO, pre-reduced GO and 3D porous RGO ﬁlms. [00152]

FIG. 16

performance graph

FIG. 16 shows an exemplary schematic illustration of a two-electrode measurement system. [00153] FIGs. 17A-D show the I-V curves, and a comparison of …

FIG. 17

FIG. 18

FIG. 18 shows the strain-stress curve of an exemplary 3D porous RGO ﬁlm. [00155] FIGs. 19A-D show cyclic voltammetry proﬁles and the dependence of the …

FIG. 19

FIG. 20

FIG. 20 10 E. The exemplary TEM images, per

FIG. 21

FIG. 21A FIGs. 20A-D demonstrate that the exemplary 3D porous RGO electrodes retain their 20 rectangular shape and high cu rr ent densities even at an …

FIG. 22

FIG. 23

performance graph

FIG. 23 shows galvanostatic charge/discharge proﬁles for exemplary RGO and 3D porous 10 RGO ﬁlms at a current density of 100 A/g. [00160]

FIG. 24

FIG. 24 shows exemplary illustrations of GO dispersions after being subjected to pre- reduction by ascorbic acid for diﬀerent times.

Claims

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

3 independent · 8 dependent

1
Independentreduced graphene oxide film
A reduced graphene oxide ﬁlm comprising a continuous three-dimensional network of two-dimensional graphene sheets forming pores having a size of less than 1,000 nm, wherein the reduced graphene oxide ﬁ lm has a density of at least about 0.1 g/cm 3 and a time constant of less than 26 ms. Currently amended
1. 2
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has an areal mass loading of at least about 0.1 mg/cm 2. Original
2. 3
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁlm has a tensile strength of at least about 9 MPa. Original
3. 4
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has a conductivity of at least about 1,000 S/m. Original
4. 5
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has a gravimetric energy density of at least about 4 Wh/kg. Original
5. 6
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has a gravimetric power density of at least about 25 kW/kg. Original
6. 7
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has a gravimetric capacitance, in a current density of 1 A/g, of at least about 90 F/g. Original
7. 8
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has a capacitive retention, after about 1000 cycles of charging, of at least about 50%. Original
8. 9
  Dependent← claim 1reduced graphene oxide film
  The reduced graphene oxide ﬁlm of claim 1, wherein the reduced graphene oxide ﬁ lm has an areal capacitance of at least about 25 mF/cm 2. Original
10
Independent
10.-26. Canceled
26
Independent
Canceled

Device structures

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

supercapacitor

reduced graphene oxide filmelectrode

Materials

Materials described outside the worked examples.

reduced graphene oxide film

Electrode Material

Process steps

Additional fabrication and treatment steps described in the patent.

Filtration And Freeze Casting

Step 1

Process details

description:Direct preparation of three dimensional porous reduced graphene oxide films by filtration and freeze casting

Materials:reduced graphene oxide film

Characterization

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

sem

SEM

FIG. 1 shows an exemplary schematic illustration of the formation of a porous graphene 25 ﬁlm through pre-reduction, ﬁltration and freeze-casting, an exemplary …

Figure references

FIG. 1

graphenegraphene

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Pore Size	≤ 1000 nm	reduced graphene oxide film
Density	≥ 0.1 g/cm3

Why these are connected

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

Cellular Graphene Films | Matter42 Literature