Patent
US 9,534,312SINGLE CRYSTALLINE GRAPHENE SHEET AND PROCESS OF PREPARING THE SAME
Jae-young CHOI
US
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Atlas literature
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US 9,534,312Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process to prepare a graphene sheet according to the prior art;
FIG. 2 schematically shows a process to prepare a polycrystalline graphene sheet; 15
FIG. 3 schematically shows a polymer coated on a catalyst layer;
FIG. 4 schematically shows a structure of a single-crystal graphene sheet formed on a catalyst layer;
FIG. 5 schematically shows a stack of polymers having a hydrophilic part and a hydrophobic part; 20
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a single-crystal graphene sheet, the method c omprising: forming a catalyst layer, the catalyst layer comprising a single-crystal 5 graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere to form a single-crystal graphene sheet.
The method of claim 1, wherein the carbonaceous material is solid-solubilized in the catalyst layer.
The method of claim 1, wherein the catalyst layer comprises a metal 15 selected from the group consisting of Ni, Co, Fe, Pt, Au, A l, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr, a combination comprising at least one of the foregoing metals, and an alloy comprising at least one of the foregoing metals.
The method of claim 1, wherein the disposing a carbonaceous material 20 on the catalyst layer comprises coating a carbon-containing polymer on a surface of the catalyst layer.
15 11. The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by immersing the catalyst layer in a liquid, wherein the liquid comprises the carbonaceous material.
The method of claim 1, wherein the heat-treating the catalyst layer 20 comprises: a first heat-treating at a temperature and for a time sufficient to solid-solubilize the carbonaceous material in the catalyst layer; and a second heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet.
The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by coating a carbon-containing polymer on a surface of the catalyst layer, wherein the heat-treating is performed at a temperature 30 between about 300 0 C to about 2,000 0 C and for a time between about 0.001 hours to about 1000 hours.
The method of claim 1, further comprising separating the single-crystal graphene sheet from the catalyst layer by removing the catalyst layer by treating the single-crystal graphene sheet and the catalyst layer with an acid after the heat-treating.
-2007-0132682, SI -31758-US, YPL 0 545D 19
A method for preparing a single-crystal graphene sheet, comprising: forming a catalyst layer, the catalyst layer comprising a single-crystal graphitizing metal catalyst sheet; disposing a self-assembling polymer on the catalyst layer; 10 heat-treating the catalyst layer and the self-assembling polymer in at least one of an inert atmosphere and a reducing atmosphere to solid-solubilize a carbonaceous material in the catalyst layer; and heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet. 15 10-2007-0132682, SI -31758-US, YPL 0 545D 21
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
Materials described outside the worked examples.
single-crystal graphitizing metal catalyst
graphitizing metal catalyst (Ni, Co, Fe, Pt, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr or alloy)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Raman D band/G band intensity ratio | ≤ 0.2 dimensionless | single-crystal graphene sheet |
number of graphene layers | 1–300 layers |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,534,312Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process to prepare a graphene sheet according to the prior art;
FIG. 2 schematically shows a process to prepare a polycrystalline graphene sheet; 15
FIG. 3 schematically shows a polymer coated on a catalyst layer;
FIG. 4 schematically shows a structure of a single-crystal graphene sheet formed on a catalyst layer;
FIG. 5 schematically shows a stack of polymers having a hydrophilic part and a hydrophobic part; 20
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a single-crystal graphene sheet, the method c omprising: forming a catalyst layer, the catalyst layer comprising a single-crystal 5 graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere to form a single-crystal graphene sheet.
The method of claim 1, wherein the carbonaceous material is solid-solubilized in the catalyst layer.
The method of claim 1, wherein the catalyst layer comprises a metal 15 selected from the group consisting of Ni, Co, Fe, Pt, Au, A l, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr, a combination comprising at least one of the foregoing metals, and an alloy comprising at least one of the foregoing metals.
The method of claim 1, wherein the disposing a carbonaceous material 20 on the catalyst layer comprises coating a carbon-containing polymer on a surface of the catalyst layer.
15 11. The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by immersing the catalyst layer in a liquid, wherein the liquid comprises the carbonaceous material.
The method of claim 1, wherein the heat-treating the catalyst layer 20 comprises: a first heat-treating at a temperature and for a time sufficient to solid-solubilize the carbonaceous material in the catalyst layer; and a second heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet.
The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by coating a carbon-containing polymer on a surface of the catalyst layer, wherein the heat-treating is performed at a temperature 30 between about 300 0 C to about 2,000 0 C and for a time between about 0.001 hours to about 1000 hours.
The method of claim 1, further comprising separating the single-crystal graphene sheet from the catalyst layer by removing the catalyst layer by treating the single-crystal graphene sheet and the catalyst layer with an acid after the heat-treating.
-2007-0132682, SI -31758-US, YPL 0 545D 19
A method for preparing a single-crystal graphene sheet, comprising: forming a catalyst layer, the catalyst layer comprising a single-crystal graphitizing metal catalyst sheet; disposing a self-assembling polymer on the catalyst layer; 10 heat-treating the catalyst layer and the self-assembling polymer in at least one of an inert atmosphere and a reducing atmosphere to solid-solubilize a carbonaceous material in the catalyst layer; and heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet. 15 10-2007-0132682, SI -31758-US, YPL 0 545D 21
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
Materials described outside the worked examples.
single-crystal graphitizing metal catalyst
graphitizing metal catalyst (Ni, Co, Fe, Pt, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr or alloy)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Raman D band/G band intensity ratio | ≤ 0.2 dimensionless | single-crystal graphene sheet |
number of graphene layers | 1–300 layers |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,534,312Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process to prepare a graphene sheet according to the prior art;
FIG. 2 schematically shows a process to prepare a polycrystalline graphene sheet; 15
FIG. 3 schematically shows a polymer coated on a catalyst layer;
FIG. 4 schematically shows a structure of a single-crystal graphene sheet formed on a catalyst layer;
FIG. 5 schematically shows a stack of polymers having a hydrophilic part and a hydrophobic part; 20
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a single-crystal graphene sheet, the method c omprising: forming a catalyst layer, the catalyst layer comprising a single-crystal 5 graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere to form a single-crystal graphene sheet.
The method of claim 1, wherein the carbonaceous material is solid-solubilized in the catalyst layer.
The method of claim 1, wherein the catalyst layer comprises a metal 15 selected from the group consisting of Ni, Co, Fe, Pt, Au, A l, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr, a combination comprising at least one of the foregoing metals, and an alloy comprising at least one of the foregoing metals.
The method of claim 1, wherein the disposing a carbonaceous material 20 on the catalyst layer comprises coating a carbon-containing polymer on a surface of the catalyst layer.
15 11. The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by immersing the catalyst layer in a liquid, wherein the liquid comprises the carbonaceous material.
The method of claim 1, wherein the heat-treating the catalyst layer 20 comprises: a first heat-treating at a temperature and for a time sufficient to solid-solubilize the carbonaceous material in the catalyst layer; and a second heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet.
The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by coating a carbon-containing polymer on a surface of the catalyst layer, wherein the heat-treating is performed at a temperature 30 between about 300 0 C to about 2,000 0 C and for a time between about 0.001 hours to about 1000 hours.
The method of claim 1, further comprising separating the single-crystal graphene sheet from the catalyst layer by removing the catalyst layer by treating the single-crystal graphene sheet and the catalyst layer with an acid after the heat-treating.
-2007-0132682, SI -31758-US, YPL 0 545D 19
A method for preparing a single-crystal graphene sheet, comprising: forming a catalyst layer, the catalyst layer comprising a single-crystal graphitizing metal catalyst sheet; disposing a self-assembling polymer on the catalyst layer; 10 heat-treating the catalyst layer and the self-assembling polymer in at least one of an inert atmosphere and a reducing atmosphere to solid-solubilize a carbonaceous material in the catalyst layer; and heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet. 15 10-2007-0132682, SI -31758-US, YPL 0 545D 21
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
Materials described outside the worked examples.
single-crystal graphitizing metal catalyst
graphitizing metal catalyst (Ni, Co, Fe, Pt, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr or alloy)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Raman D band/G band intensity ratio | ≤ 0.2 dimensionless | single-crystal graphene sheet |
number of graphene layers | 1–300 layers |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,534,312Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process to prepare a graphene sheet according to the prior art;
FIG. 2 schematically shows a process to prepare a polycrystalline graphene sheet; 15
FIG. 3 schematically shows a polymer coated on a catalyst layer;
FIG. 4 schematically shows a structure of a single-crystal graphene sheet formed on a catalyst layer;
FIG. 5 schematically shows a stack of polymers having a hydrophilic part and a hydrophobic part; 20
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a single-crystal graphene sheet, the method c omprising: forming a catalyst layer, the catalyst layer comprising a single-crystal 5 graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere to form a single-crystal graphene sheet.
The method of claim 1, wherein the carbonaceous material is solid-solubilized in the catalyst layer.
The method of claim 1, wherein the catalyst layer comprises a metal 15 selected from the group consisting of Ni, Co, Fe, Pt, Au, A l, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr, a combination comprising at least one of the foregoing metals, and an alloy comprising at least one of the foregoing metals.
The method of claim 1, wherein the disposing a carbonaceous material 20 on the catalyst layer comprises coating a carbon-containing polymer on a surface of the catalyst layer.
15 11. The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by immersing the catalyst layer in a liquid, wherein the liquid comprises the carbonaceous material.
The method of claim 1, wherein the heat-treating the catalyst layer 20 comprises: a first heat-treating at a temperature and for a time sufficient to solid-solubilize the carbonaceous material in the catalyst layer; and a second heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet.
The method of claim 1, wherein the disposing a carbonaceous material on the catalyst layer is performed by coating a carbon-containing polymer on a surface of the catalyst layer, wherein the heat-treating is performed at a temperature 30 between about 300 0 C to about 2,000 0 C and for a time between about 0.001 hours to about 1000 hours.
The method of claim 1, further comprising separating the single-crystal graphene sheet from the catalyst layer by removing the catalyst layer by treating the single-crystal graphene sheet and the catalyst layer with an acid after the heat-treating.
-2007-0132682, SI -31758-US, YPL 0 545D 19
A method for preparing a single-crystal graphene sheet, comprising: forming a catalyst layer, the catalyst layer comprising a single-crystal graphitizing metal catalyst sheet; disposing a self-assembling polymer on the catalyst layer; 10 heat-treating the catalyst layer and the self-assembling polymer in at least one of an inert atmosphere and a reducing atmosphere to solid-solubilize a carbonaceous material in the catalyst layer; and heat-treating at a temperature and for a time sufficient to precipitate the solid-solubilized carbonaceous material and form a single-crystal graphene sheet. 15 10-2007-0132682, SI -31758-US, YPL 0 545D 21
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
Materials described outside the worked examples.
single-crystal graphitizing metal catalyst
graphitizing metal catalyst (Ni, Co, Fe, Pt, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V, Zr or alloy)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Raman D band/G band intensity ratio | ≤ 0.2 dimensionless | single-crystal graphene sheet |
number of graphene layers | 1–300 layers |
Related documents with shared materials, methods, properties, or citations.
carbonaceous material
single-crystal graphene sheet
carbon-containing polymer
self-assembling polymer
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
width and length of single-crystal graphene sheet | 1–1000 mm | single-crystal graphene sheet |
Duration | 0.001–1000 hours | — |
Duration | 0.01–100 hours | — |
Duration | 0.1–10 hours | — |
Duration | ≤ 0.001 hours | — |
Thickness | ≤ 0.1 nm | — |
carbonaceous material
single-crystal graphene sheet
carbon-containing polymer
self-assembling polymer
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
width and length of single-crystal graphene sheet | 1–1000 mm | single-crystal graphene sheet |
Duration | 0.001–1000 hours | — |
Duration | 0.01–100 hours | — |
Duration | 0.1–10 hours | — |
Duration | ≤ 0.001 hours | — |
Thickness | ≤ 0.1 nm | — |
carbonaceous material
single-crystal graphene sheet
carbon-containing polymer
self-assembling polymer
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
width and length of single-crystal graphene sheet | 1–1000 mm | single-crystal graphene sheet |
Duration | 0.001–1000 hours | — |
Duration | 0.01–100 hours | — |
Duration | 0.1–10 hours | — |
Duration | ≤ 0.001 hours | — |
Thickness | ≤ 0.1 nm | — |
carbonaceous material
single-crystal graphene sheet
carbon-containing polymer
self-assembling polymer
FIG. 6 is a graph illustrating Raman spectra of single-crystal graphene sheets prepared according to Examples 1 and 2; and
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
FIG. 7 is a graph illustrating Raman spectra of graphene sheets prepared according to Comparative Examples 1 and 2
width and length of single-crystal graphene sheet | 1–1000 mm | single-crystal graphene sheet |
Duration | 0.001–1000 hours | — |
Duration | 0.01–100 hours | — |
Duration | 0.1–10 hours | — |
Duration | ≤ 0.001 hours | — |
Thickness | ≤ 0.1 nm | — |