MULTI-LAYERED GRAPHENE FILMS, ENERGY STORAGE DEVICES USING MULTI-LAYERED GRAPHENE FILMS AS ELECTRODES, AND METHODS OF MANUFACTURING MULTI-LAYERED GRAPHENE FILMS AND ENERGY STORAGE DEVICES

Dong-wook LEE

Patent

Atlas literature

Patent

US 10,269,505

MULTI-LAYERED GRAPHENE FILMS, ENERGY STORAGE DEVICES USING MULTI-LAYERED GRAPHENE FILMS AS ELECTRODES, AND METHODS OF MANUFACTURING MULTI-LAYERED GRAPHENE FILMS AND ENERGY STORAGE DEVICES

Dong-wook LEE

Drawings

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

FIG. 1

FIG. 1 is a cross-sectional view of a multi-layered graphene ﬁlm according to an example embodiment; [0042]

FIG. 2

FIG. 2 is a cross-sectional view of a multi-layered graphene ﬁlm according to another example embodiment; [0043]

FIG. 3

FIGS. 3 through 14 are cross-sectional views illustrating a method of manufacturing a multi-layered graphene ﬁlm, according to an example embodiment; [0044]

FIG. 4

FIG. 4. Thereafter, the second temporary substrate 72 may be removed from the resulting structure of

FIG. 5

FIG. 5. [0071] Referring to

FIG. 6

FIG. 6. In this way, the ﬁrst graphene layer 22 may be transferred onto the substrate 26 as illustrated in

FIG. 7

FIG. 7. The ﬁrst stamper 44 may be removed by using a suitable etchant based on the material used as the ﬁrst stamper 44. For example, when the ﬁrst stamper 44 …

FIG. 8

FIG. 8, a second graphene layer 30 is formed on a second temporary substrate 72, according to at least one example embodiment. The second temporary substrate …

FIG. 9

FIG. 9. The second graphene layer 30 may be grown by TCVD (thermal chemical vapor deposition). For example, the second graphene layer 30 may be formed by …

FIG. 10

FIG. 10. Consequently, only the second graphene layer 30 and the second stamper 32 are left as illustrated in

FIG. 11

FIG. 11. The second temporary substrate 72 may be removed in the same manner as the ﬁrst temporary substrate 20 described with reference to

FIG. 12

FIG. 12, the resulting structure of

FIG. 13

FIG. 13, the second graphene layer 30 is transferred onto the ﬁrst graphene layer 22, to form a multi-layered graphene ﬁlm in which the ﬁrst and second …

FIG. 14

FIG. 14, the number of alternate stacks of graphene layers may be 2 or more, and the maximum number of alternate stacks of graphene layers may be about 100. In …

FIG. 15

FIGS. 15 through 21 are cross-sectional views illustrating a method of manufacturing a multi-layered graphene ﬁlm, according to another example embodiment; …

FIG. 16

FIG. 16, a ﬁrst graphene oxide layer 24a is formed on the third temporary substrate 78. [0080] Thereafter, referring to

FIG. 17

FIG. 17. Accordingly, only the ﬁrst graphene oxide layer 24a and the third stamper 64 are left as illustrated in

FIG. 18

FIG. 18. [0081] Thereafter, as illustrated in

FIG. 19

FIG. 19. Consequently, as illustrated in

FIG. 20

FIG. 20, the ﬁrst graphene oxide layer 24a is transferred onto the ﬁrst graphene layer 22, to form a multi-layered graphene ﬁlm including the ﬁrst graphene …

FIG. 21

FIG. 21, the ﬁrst graphene layer 22 and the ﬁrst graphene oxide layer 24a may be repeatedly stacked alternatively on the ﬁrst graphene oxide layer 24a, …

FIG. 22

performance graph

FIG. 22 is a graph illustrating an X-ray diﬀraction result of a multi-layered graphene ﬁlm according to an example embodiment; [0046]

FIG. 23

FIG. 23 is a plan view of an energy storage device according to an example embodiment; [0047]

FIG. 24

FIG. 24 is a cross-sectional view taken along line 24-24' of

FIG. 25

FIG. 25 is an enlarged cross-sectional view of a ﬁrst area A l including a portion of a ﬁrst electrode of

FIG. 26

FIG. 26 is an enlarged cross-sectional view of a second area A₂ including a portion of a second electrode of

FIG. 27

FIG. 27 is an exploded perspective view of the energy storage device of

FIG. 28

FIGS. 28 through 34 are cross-sectional views illustrating a method of manufacturing an energy storage device, according to an example embodiment; and [0052]

FIG. 29

FIG. 30

FIG. 30, a second electrode 86 is mounted on the separator 84, according to at least one example embodiment. The second electrode 86 may have a structure in …

FIG. 31

FIG. 31, a ring-shaped gasket 92 is disposed inside a vertical portion 80b of the can 80, according to at least one example embodiment. A portion of the gasket …

FIG. 32

FIG. 32, a conductive elastic member 88 is disposed on the second electrode 86, according to at least one example embodiment. [0104] Thereafter, as illustrated …

FIG. 33

FIG. 33, a cap 90 is disposed on the conductive elastic member 88, and the cap 90 is gradually pressed in a downward direction via the application of a …

FIG. 34

FIG. 34, the downward pressure may be maintained until the cap 90 contacts the gasket 92, and the downward pressure may be maintained for a desired (or, …

FIG. 35

performance graph

FIG. 35 is a graph illustrating a test result of the capacity characteristics of an energy storage device manufactured by the method of

Claims

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

1 independent · 16 dependent

1
IndependentCCCmulti-layered graphene film
A method of manufacturing a multi-layered graphene ﬁlm, the method comprising: forming a ﬁrst graphene layer on a substrate; forming a spacer layer on the ﬁrst graphene layer; and forming an upper graphene layer on the spacer layer, wherein the spacer layer maintains a desired distance between the ﬁrst graphene layer and the upper graphene layer; and wherein the spacer layer comprises a plurality of graphene sheet fragments and the plurality of graphene sheet fragments are formed by adjusting a graphene growth time of the plurality of graphene sheet fragments to be shorter than a graphene growth time of the ﬁrst graphene layer. Currently amended
1. 2
  Dependent← claim 1multi-layered graphene film
  The method of claim 1, wherein a plurality of layers with diﬀerent layer conﬁgurations are further formed between the spacer layer and the upper graphene layer. Original
2. 4
  Dependent← claim 1CCmulti-layered graphene film
  The method of claim 1, wherein the spacer layer comprises a second graphene layer, and the second graphene layer has a diﬀerent layer conﬁguration than the ﬁrst graphene layer and the upper graphene layer. Original
3. 6
  Dependent← claim 1C
  The method of claim 1, wherein the forming of the ﬁrst graphene layer on the substrate comprises: forming a ﬁrst graphene sheet on a ﬁrst temporary substrate; attaching a ﬁrst stamper to the ﬁrst graphene sheet; removing the ﬁrst temporary substrate; attaching the ﬁrst graphene sheet, to which the ﬁrst stamper is attached, on the substrate; and removing the ﬁrst stamper. Original
4. 7
  Dependent← claim 1CC
  The method of claim 1, wherein the forming of the spacer layer on the ﬁrst graphene layer comprises: forming a plurality of graphene sheet fragments on a second temporary substrate; attaching a second stamper to the plurality of graphene sheet fragments; removing the second temporary substrate; attaching the plurality of graphene sheet fragments, to which the second stamper is attached, to the ﬁrst graphene layer; and removing the second stamper. Original
5. 11
  Dependent← claim 1Cgraphene oxide
  The method of claim 1, wherein the forming of the spacer layer on the ﬁrst graphene layer comprises: forming a graphene layer on a temporary substrate; changing the graphene layer, formed on the temporary substrate, into a graphene oxide layer; forming a stamper on the graphene oxide layer; removing the temporary substrate; and transferring the graphene oxide layer onto the ﬁrst graphene layer and removing the stamper. Original
6. 15
  Dependent← claim 1CCCenergy storage device (supercapacitor/battery)
  A method of manufacturing an energy storage device, the method comprising: mounting a ﬁrst electrode on a can; mounting a separator on the ﬁrst electrode; mounting a second electrode on the separator; mounting a gasket contacting the can; mounting an elastic member on the second electrode; mounting a cap on the elastic member; and pressing the cap until the gasket and the cap are closely coupled with each other, wherein an electrolyte is injected into the electrode before the mounting of the elastic member, and the ﬁrst electrode and the second electrode are formed by the method of claim 1. Original

Device structures

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

multi-layered graphene film

Cupper graphene layer

Cspacer layer

Cfirst graphene layer

energy storage device (supercapacitor/battery)

Csecond electrode

separatorseparator

Materials

Materials described outside the worked examples.

graphene

Electrode Active Material

Spacer Layer MaterialSpacer Layer Component

metal substrate

Process steps

Additional fabrication and treatment steps described in the patent.

Graphene Growth And Transfer

Step 1

Process details

description:Form first graphene sheet on first temporary substrate; attach first stamper; remove first temporary substrate; attach graphene sheet to substrate; remove stamper

Materials:C

Characterization

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

device performance measurement

Device Performance Measurement

FIG. 22 is a graph illustrating an X-ray diﬀraction result of a multi-layered graphene ﬁlm according to an example embodiment; [0046]

Figure references

FIG. 22

graphene

Why these are connected

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

MULTI-LAYERED GRAPHENE FILMS, ENERGY STORAGE DEVICES USING MULTI-LAYERED GRAPHENE FILMS AS ELECTRODES, AND METHODS OF MANUFACTURING MULTI-LAYERED GRAPHENE FILMS AND ENERGY STORAGE DEVICES | Matter42 Literature