Patent
US 9,017,867Self Assembled Multi-Layer Nanocomposite of Graphene and Metal Oxide Materials
Jun Liu
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,017,867Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 5(a) is a photograph of a FGS aqueous dispersion (left) and FGS aqueous dispersion using sodium dodecyl sulfate (SDS) surfactant (right);
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nanocomposite material comprising at least two layers, each layer including a metal oxide layer directly bonded to a at least one graphene layer sheet, wherein the g raphene layer has a thickness of from about 0.5 nm to 50 n m, and the metal oxide layers and graphene layers s h eets-are alternatingly positioned in the at least two layers and bonded to one another in a stacked confi g uration.
(O ri ginal) The nanocomposite material of claim 1 wherein said metal oxide is MxO, and where M is selected from the group consisting of T i, Sn, Ni, Mn, Si, V and combinations thereof.
The nanocomposite material of claim 1 wherein said metal oxide is tin oxide
The nanocomposite material of claim 1 wherein said metal oxide has-a is mesoporous-s truotu-e
The nanocomposite mate ri al of claim 1 wherein said nanocomposite mate ri al has a specific capacity of greater than about 400 mAh/g
(Withdrawn and currently amended) A method for forming an ordered nanocomposite material comprising the steps of: providing graphene in a suspension; dispersing the graphene with a surfactant; adding a metal oxide precursor; precipitating the metal oxide and allowing the graphene and the metal oxide to organize into self assembled structures, thereby forming a nanocomposite material precipitate having a series of ordered g raphene and metal oxide layers, wherein each layer comprises a the metal oxide la y ers and graphene layers are alternatin g ly positioned in a sandwich confi g uration and the metal oxide layers are directly bonded to at least one the graphene layers formin q the se ri es of ordered layers
The method of claim 6, wherein the step of precipitating is maintained for about one to about 24 hours. withdrawn
(Withdrawn and currently amended) The method of claim 7 further comprising the step of heating the precipitate from 50 to 500 degrees C to condense the metal oxide layers on the graphene la yer s eFfaGe 10 The method of claim 6 further comprising the step of heating the precipitate from 50 to 500 degrees C to remove the surfactant 11 An energy storage device comprising a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer directly ehemteal y bonded to at 4 east-o ne a graphene la y er sheet, wherein the graphene layer has a thickness of from about 0.5 nm to 50 nm, and the metal oxide layers and graphene layers sheets are alternatingly bonded to one another a ltern ate in the at least two layers.
(O ri ginal) The energy storage device of claim 11, wherein said nanocomposite mate rial has a specific capacity of greater than about 400 mAh/g
The energy storage device of claim 11, wherein the energy storage device is an electrochemical device having an anode, a cathode, an electrolyte, and a current collector. 14 The energy storage device of claim 11, wherein at least one of an electrode, an anode, a cathode, a separator, a current collector, an electrolyte, and combinations thereof includes a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer ehernea4 y directly bonded to at 4east-ene the graphene la y er sheet, wherein the metal oxide layers and graphene lav ers sheets alternate in p osition in the at least two layers forming a sandwich confi g uration
The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 10% of carbon-based material by SVG 12462857.12-20-2012.HAYGOMYAPXXIFW3.CLM27113250.24.267.2288.1846.2335.svg 0.157 5.263 Graph Black and white 16 The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 5% of carbon-based material by weight
The energy storage device of claim 13, wherein the cathode contains the nanocomposite mate ri al, and wherein the cathode contains less than 5% of carbon-based mate ri al by weight. Page 3 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462,857
The energy storage device of claim 13, wherein the cathode contains the nanocomposite material, and wherein the cathode contains less than 2 5% carbon-based mate ri al by weight.
(O ri ginal) The energy storage device of claim 11 wherein the electrochemical device is a lithium ion battery.
A lithium ion battery electrode comprising a nanocomposite mate rial which has at least two layers bonded to one another, each layer including a metal oxide layer directly bonded to at least one a graphene sheet layer, wherein the g raphene layer has a thickness from about 0 5 nm to 50 nm, and wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two layers, and wherein said nanocomposite material has a specific capacity of greater than about 400 mAh/g, and wherein the layers are provided as an ordered, three dimensional assembly
A nanocomposite mate ri al formed by the steps comp ri sing providing graphene in a suspension; dispersing the suspension graphe ne- with a surfactant to provide multiple graphene layers wherein the graphene layer has a thickness of from about 0 5 nm to 50 nm, adding a metal oxide precursor, precipitating the metal oxide and allowing the graphene layers and the metal oxide to organize into self assembled structures thereby forming a series of ordered layers bonded to one another, wherein each layer comp ri ses a metal oxide layer bonded to at least one graphene layer sheet, wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two ordered layers, and heating the metal oxide layers and graphene layers sheets to a temperature sufficient to remove the surfactant such that the metal oxide layers are directly bonded to the graphene layers sheets. 22 The nanocomposite mate ri al of claim 21, wherein the nanocomposite material is formed into an ordered three-dimensional superstructure having multi length and multiphase building blocks 23 The nanocomposite mate ri al of claim 21, wherein the graphene lav ers sheets in the layers have a thickness between 3 nm and 20 nm Page 4 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462, 857
The nanocomposite mate ri al of claim 21, wherein the nanocomposite material has a specific capacity of greater than about 400 mAh/g. Page 5 of 14
Layer stacks claimed or described, ordered top of device to substrate.
nanocomposite material (stacked configuration)
energy storage device (electrochemical)
No layer stack recorded.
lithium ion battery
No layer stack recorded.
lithium ion battery electrode
Materials described outside the worked examples.
nanocomposite material (metal oxide/graphene)
metal oxide
MxOy
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacity of nanocomposite material | >400 mAh/g | nanocomposite material (metal oxide/graphene) |
graphene layer thickness (claimed range) | 0.5–50 nm |
Related documents with shared materials, methods, properties, or citations.
STRONGLY COUPLED INORGANIC-GRAPHENE HYBRID MATERIALS, APPARATUSES, SYSTEMS AND METHODS
METHOD FOR PREPARING METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE USING SUPERCRITICAL FLUID AND METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE PREPARED BY THE SAME
Patent
Atlas literature
Patent
US 9,017,867Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 5(a) is a photograph of a FGS aqueous dispersion (left) and FGS aqueous dispersion using sodium dodecyl sulfate (SDS) surfactant (right);
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nanocomposite material comprising at least two layers, each layer including a metal oxide layer directly bonded to a at least one graphene layer sheet, wherein the g raphene layer has a thickness of from about 0.5 nm to 50 n m, and the metal oxide layers and graphene layers s h eets-are alternatingly positioned in the at least two layers and bonded to one another in a stacked confi g uration.
(O ri ginal) The nanocomposite material of claim 1 wherein said metal oxide is MxO, and where M is selected from the group consisting of T i, Sn, Ni, Mn, Si, V and combinations thereof.
The nanocomposite material of claim 1 wherein said metal oxide is tin oxide
The nanocomposite material of claim 1 wherein said metal oxide has-a is mesoporous-s truotu-e
The nanocomposite mate ri al of claim 1 wherein said nanocomposite mate ri al has a specific capacity of greater than about 400 mAh/g
(Withdrawn and currently amended) A method for forming an ordered nanocomposite material comprising the steps of: providing graphene in a suspension; dispersing the graphene with a surfactant; adding a metal oxide precursor; precipitating the metal oxide and allowing the graphene and the metal oxide to organize into self assembled structures, thereby forming a nanocomposite material precipitate having a series of ordered g raphene and metal oxide layers, wherein each layer comprises a the metal oxide la y ers and graphene layers are alternatin g ly positioned in a sandwich confi g uration and the metal oxide layers are directly bonded to at least one the graphene layers formin q the se ri es of ordered layers
The method of claim 6, wherein the step of precipitating is maintained for about one to about 24 hours. withdrawn
(Withdrawn and currently amended) The method of claim 7 further comprising the step of heating the precipitate from 50 to 500 degrees C to condense the metal oxide layers on the graphene la yer s eFfaGe 10 The method of claim 6 further comprising the step of heating the precipitate from 50 to 500 degrees C to remove the surfactant 11 An energy storage device comprising a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer directly ehemteal y bonded to at 4 east-o ne a graphene la y er sheet, wherein the graphene layer has a thickness of from about 0.5 nm to 50 nm, and the metal oxide layers and graphene layers sheets are alternatingly bonded to one another a ltern ate in the at least two layers.
(O ri ginal) The energy storage device of claim 11, wherein said nanocomposite mate rial has a specific capacity of greater than about 400 mAh/g
The energy storage device of claim 11, wherein the energy storage device is an electrochemical device having an anode, a cathode, an electrolyte, and a current collector. 14 The energy storage device of claim 11, wherein at least one of an electrode, an anode, a cathode, a separator, a current collector, an electrolyte, and combinations thereof includes a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer ehernea4 y directly bonded to at 4east-ene the graphene la y er sheet, wherein the metal oxide layers and graphene lav ers sheets alternate in p osition in the at least two layers forming a sandwich confi g uration
The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 10% of carbon-based material by SVG 12462857.12-20-2012.HAYGOMYAPXXIFW3.CLM27113250.24.267.2288.1846.2335.svg 0.157 5.263 Graph Black and white 16 The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 5% of carbon-based material by weight
The energy storage device of claim 13, wherein the cathode contains the nanocomposite mate ri al, and wherein the cathode contains less than 5% of carbon-based mate ri al by weight. Page 3 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462,857
The energy storage device of claim 13, wherein the cathode contains the nanocomposite material, and wherein the cathode contains less than 2 5% carbon-based mate ri al by weight.
(O ri ginal) The energy storage device of claim 11 wherein the electrochemical device is a lithium ion battery.
A lithium ion battery electrode comprising a nanocomposite mate rial which has at least two layers bonded to one another, each layer including a metal oxide layer directly bonded to at least one a graphene sheet layer, wherein the g raphene layer has a thickness from about 0 5 nm to 50 nm, and wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two layers, and wherein said nanocomposite material has a specific capacity of greater than about 400 mAh/g, and wherein the layers are provided as an ordered, three dimensional assembly
A nanocomposite mate ri al formed by the steps comp ri sing providing graphene in a suspension; dispersing the suspension graphe ne- with a surfactant to provide multiple graphene layers wherein the graphene layer has a thickness of from about 0 5 nm to 50 nm, adding a metal oxide precursor, precipitating the metal oxide and allowing the graphene layers and the metal oxide to organize into self assembled structures thereby forming a series of ordered layers bonded to one another, wherein each layer comp ri ses a metal oxide layer bonded to at least one graphene layer sheet, wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two ordered layers, and heating the metal oxide layers and graphene layers sheets to a temperature sufficient to remove the surfactant such that the metal oxide layers are directly bonded to the graphene layers sheets. 22 The nanocomposite mate ri al of claim 21, wherein the nanocomposite material is formed into an ordered three-dimensional superstructure having multi length and multiphase building blocks 23 The nanocomposite mate ri al of claim 21, wherein the graphene lav ers sheets in the layers have a thickness between 3 nm and 20 nm Page 4 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462, 857
The nanocomposite mate ri al of claim 21, wherein the nanocomposite material has a specific capacity of greater than about 400 mAh/g. Page 5 of 14
Layer stacks claimed or described, ordered top of device to substrate.
nanocomposite material (stacked configuration)
energy storage device (electrochemical)
No layer stack recorded.
lithium ion battery
No layer stack recorded.
lithium ion battery electrode
Materials described outside the worked examples.
nanocomposite material (metal oxide/graphene)
metal oxide
MxOy
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacity of nanocomposite material | >400 mAh/g | nanocomposite material (metal oxide/graphene) |
graphene layer thickness (claimed range) | 0.5–50 nm |
Related documents with shared materials, methods, properties, or citations.
STRONGLY COUPLED INORGANIC-GRAPHENE HYBRID MATERIALS, APPARATUSES, SYSTEMS AND METHODS
METHOD FOR PREPARING METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE USING SUPERCRITICAL FLUID AND METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE PREPARED BY THE SAME
Patent
Atlas literature
Patent
US 9,017,867Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 5(a) is a photograph of a FGS aqueous dispersion (left) and FGS aqueous dispersion using sodium dodecyl sulfate (SDS) surfactant (right);
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nanocomposite material comprising at least two layers, each layer including a metal oxide layer directly bonded to a at least one graphene layer sheet, wherein the g raphene layer has a thickness of from about 0.5 nm to 50 n m, and the metal oxide layers and graphene layers s h eets-are alternatingly positioned in the at least two layers and bonded to one another in a stacked confi g uration.
(O ri ginal) The nanocomposite material of claim 1 wherein said metal oxide is MxO, and where M is selected from the group consisting of T i, Sn, Ni, Mn, Si, V and combinations thereof.
The nanocomposite material of claim 1 wherein said metal oxide is tin oxide
The nanocomposite material of claim 1 wherein said metal oxide has-a is mesoporous-s truotu-e
The nanocomposite mate ri al of claim 1 wherein said nanocomposite mate ri al has a specific capacity of greater than about 400 mAh/g
(Withdrawn and currently amended) A method for forming an ordered nanocomposite material comprising the steps of: providing graphene in a suspension; dispersing the graphene with a surfactant; adding a metal oxide precursor; precipitating the metal oxide and allowing the graphene and the metal oxide to organize into self assembled structures, thereby forming a nanocomposite material precipitate having a series of ordered g raphene and metal oxide layers, wherein each layer comprises a the metal oxide la y ers and graphene layers are alternatin g ly positioned in a sandwich confi g uration and the metal oxide layers are directly bonded to at least one the graphene layers formin q the se ri es of ordered layers
The method of claim 6, wherein the step of precipitating is maintained for about one to about 24 hours. withdrawn
(Withdrawn and currently amended) The method of claim 7 further comprising the step of heating the precipitate from 50 to 500 degrees C to condense the metal oxide layers on the graphene la yer s eFfaGe 10 The method of claim 6 further comprising the step of heating the precipitate from 50 to 500 degrees C to remove the surfactant 11 An energy storage device comprising a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer directly ehemteal y bonded to at 4 east-o ne a graphene la y er sheet, wherein the graphene layer has a thickness of from about 0.5 nm to 50 nm, and the metal oxide layers and graphene layers sheets are alternatingly bonded to one another a ltern ate in the at least two layers.
(O ri ginal) The energy storage device of claim 11, wherein said nanocomposite mate rial has a specific capacity of greater than about 400 mAh/g
The energy storage device of claim 11, wherein the energy storage device is an electrochemical device having an anode, a cathode, an electrolyte, and a current collector. 14 The energy storage device of claim 11, wherein at least one of an electrode, an anode, a cathode, a separator, a current collector, an electrolyte, and combinations thereof includes a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer ehernea4 y directly bonded to at 4east-ene the graphene la y er sheet, wherein the metal oxide layers and graphene lav ers sheets alternate in p osition in the at least two layers forming a sandwich confi g uration
The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 10% of carbon-based material by SVG 12462857.12-20-2012.HAYGOMYAPXXIFW3.CLM27113250.24.267.2288.1846.2335.svg 0.157 5.263 Graph Black and white 16 The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 5% of carbon-based material by weight
The energy storage device of claim 13, wherein the cathode contains the nanocomposite mate ri al, and wherein the cathode contains less than 5% of carbon-based mate ri al by weight. Page 3 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462,857
The energy storage device of claim 13, wherein the cathode contains the nanocomposite material, and wherein the cathode contains less than 2 5% carbon-based mate ri al by weight.
(O ri ginal) The energy storage device of claim 11 wherein the electrochemical device is a lithium ion battery.
A lithium ion battery electrode comprising a nanocomposite mate rial which has at least two layers bonded to one another, each layer including a metal oxide layer directly bonded to at least one a graphene sheet layer, wherein the g raphene layer has a thickness from about 0 5 nm to 50 nm, and wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two layers, and wherein said nanocomposite material has a specific capacity of greater than about 400 mAh/g, and wherein the layers are provided as an ordered, three dimensional assembly
A nanocomposite mate ri al formed by the steps comp ri sing providing graphene in a suspension; dispersing the suspension graphe ne- with a surfactant to provide multiple graphene layers wherein the graphene layer has a thickness of from about 0 5 nm to 50 nm, adding a metal oxide precursor, precipitating the metal oxide and allowing the graphene layers and the metal oxide to organize into self assembled structures thereby forming a series of ordered layers bonded to one another, wherein each layer comp ri ses a metal oxide layer bonded to at least one graphene layer sheet, wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two ordered layers, and heating the metal oxide layers and graphene layers sheets to a temperature sufficient to remove the surfactant such that the metal oxide layers are directly bonded to the graphene layers sheets. 22 The nanocomposite mate ri al of claim 21, wherein the nanocomposite material is formed into an ordered three-dimensional superstructure having multi length and multiphase building blocks 23 The nanocomposite mate ri al of claim 21, wherein the graphene lav ers sheets in the layers have a thickness between 3 nm and 20 nm Page 4 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462, 857
The nanocomposite mate ri al of claim 21, wherein the nanocomposite material has a specific capacity of greater than about 400 mAh/g. Page 5 of 14
Layer stacks claimed or described, ordered top of device to substrate.
nanocomposite material (stacked configuration)
energy storage device (electrochemical)
No layer stack recorded.
lithium ion battery
No layer stack recorded.
lithium ion battery electrode
Materials described outside the worked examples.
nanocomposite material (metal oxide/graphene)
metal oxide
MxOy
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacity of nanocomposite material | >400 mAh/g | nanocomposite material (metal oxide/graphene) |
graphene layer thickness (claimed range) | 0.5–50 nm |
Related documents with shared materials, methods, properties, or citations.
STRONGLY COUPLED INORGANIC-GRAPHENE HYBRID MATERIALS, APPARATUSES, SYSTEMS AND METHODS
METHOD FOR PREPARING METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE USING SUPERCRITICAL FLUID AND METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE PREPARED BY THE SAME
Patent
Atlas literature
Patent
US 9,017,867Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 5(a) is a photograph of a FGS aqueous dispersion (left) and FGS aqueous dispersion using sodium dodecyl sulfate (SDS) surfactant (right);
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A nanocomposite material comprising at least two layers, each layer including a metal oxide layer directly bonded to a at least one graphene layer sheet, wherein the g raphene layer has a thickness of from about 0.5 nm to 50 n m, and the metal oxide layers and graphene layers s h eets-are alternatingly positioned in the at least two layers and bonded to one another in a stacked confi g uration.
(O ri ginal) The nanocomposite material of claim 1 wherein said metal oxide is MxO, and where M is selected from the group consisting of T i, Sn, Ni, Mn, Si, V and combinations thereof.
The nanocomposite material of claim 1 wherein said metal oxide is tin oxide
The nanocomposite material of claim 1 wherein said metal oxide has-a is mesoporous-s truotu-e
The nanocomposite mate ri al of claim 1 wherein said nanocomposite mate ri al has a specific capacity of greater than about 400 mAh/g
(Withdrawn and currently amended) A method for forming an ordered nanocomposite material comprising the steps of: providing graphene in a suspension; dispersing the graphene with a surfactant; adding a metal oxide precursor; precipitating the metal oxide and allowing the graphene and the metal oxide to organize into self assembled structures, thereby forming a nanocomposite material precipitate having a series of ordered g raphene and metal oxide layers, wherein each layer comprises a the metal oxide la y ers and graphene layers are alternatin g ly positioned in a sandwich confi g uration and the metal oxide layers are directly bonded to at least one the graphene layers formin q the se ri es of ordered layers
The method of claim 6, wherein the step of precipitating is maintained for about one to about 24 hours. withdrawn
(Withdrawn and currently amended) The method of claim 7 further comprising the step of heating the precipitate from 50 to 500 degrees C to condense the metal oxide layers on the graphene la yer s eFfaGe 10 The method of claim 6 further comprising the step of heating the precipitate from 50 to 500 degrees C to remove the surfactant 11 An energy storage device comprising a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer directly ehemteal y bonded to at 4 east-o ne a graphene la y er sheet, wherein the graphene layer has a thickness of from about 0.5 nm to 50 nm, and the metal oxide layers and graphene layers sheets are alternatingly bonded to one another a ltern ate in the at least two layers.
(O ri ginal) The energy storage device of claim 11, wherein said nanocomposite mate rial has a specific capacity of greater than about 400 mAh/g
The energy storage device of claim 11, wherein the energy storage device is an electrochemical device having an anode, a cathode, an electrolyte, and a current collector. 14 The energy storage device of claim 11, wherein at least one of an electrode, an anode, a cathode, a separator, a current collector, an electrolyte, and combinations thereof includes a nanocomposite mate ri al which has at least two layers, each layer including a metal oxide layer ehernea4 y directly bonded to at 4east-ene the graphene la y er sheet, wherein the metal oxide layers and graphene lav ers sheets alternate in p osition in the at least two layers forming a sandwich confi g uration
The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 10% of carbon-based material by SVG 12462857.12-20-2012.HAYGOMYAPXXIFW3.CLM27113250.24.267.2288.1846.2335.svg 0.157 5.263 Graph Black and white 16 The energy storage device of claim 13, wherein the anode contains the nanocomposite material, and wherein the anode contains less than 5% of carbon-based material by weight
The energy storage device of claim 13, wherein the cathode contains the nanocomposite mate ri al, and wherein the cathode contains less than 5% of carbon-based mate ri al by weight. Page 3 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462,857
The energy storage device of claim 13, wherein the cathode contains the nanocomposite material, and wherein the cathode contains less than 2 5% carbon-based mate ri al by weight.
(O ri ginal) The energy storage device of claim 11 wherein the electrochemical device is a lithium ion battery.
A lithium ion battery electrode comprising a nanocomposite mate rial which has at least two layers bonded to one another, each layer including a metal oxide layer directly bonded to at least one a graphene sheet layer, wherein the g raphene layer has a thickness from about 0 5 nm to 50 nm, and wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two layers, and wherein said nanocomposite material has a specific capacity of greater than about 400 mAh/g, and wherein the layers are provided as an ordered, three dimensional assembly
A nanocomposite mate ri al formed by the steps comp ri sing providing graphene in a suspension; dispersing the suspension graphe ne- with a surfactant to provide multiple graphene layers wherein the graphene layer has a thickness of from about 0 5 nm to 50 nm, adding a metal oxide precursor, precipitating the metal oxide and allowing the graphene layers and the metal oxide to organize into self assembled structures thereby forming a series of ordered layers bonded to one another, wherein each layer comp ri ses a metal oxide layer bonded to at least one graphene layer sheet, wherein the metal oxide layers and graphene layers sheets are alternatingly positioned in the at least two ordered layers, and heating the metal oxide layers and graphene layers sheets to a temperature sufficient to remove the surfactant such that the metal oxide layers are directly bonded to the graphene layers sheets. 22 The nanocomposite mate ri al of claim 21, wherein the nanocomposite material is formed into an ordered three-dimensional superstructure having multi length and multiphase building blocks 23 The nanocomposite mate ri al of claim 21, wherein the graphene lav ers sheets in the layers have a thickness between 3 nm and 20 nm Page 4 of 14 16174-E Attorney Reference Number 23-88016-01 Application Number 12/462, 857
The nanocomposite mate ri al of claim 21, wherein the nanocomposite material has a specific capacity of greater than about 400 mAh/g. Page 5 of 14
Layer stacks claimed or described, ordered top of device to substrate.
nanocomposite material (stacked configuration)
energy storage device (electrochemical)
No layer stack recorded.
lithium ion battery
No layer stack recorded.
lithium ion battery electrode
Materials described outside the worked examples.
nanocomposite material (metal oxide/graphene)
metal oxide
MxOy
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 is a schematic illustration of the multiphase self-assembly approach of the present invention. 1(A) shows self-assembled hemimicelles on graphite surfaces. 1(B) shows absorption of surfactant hemimicelles on graphene sheets and dispersed macromolecular graphene sheets and surfactant …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacity of nanocomposite material | >400 mAh/g | nanocomposite material (metal oxide/graphene) |
graphene layer thickness (claimed range) | 0.5–50 nm |
Related documents with shared materials, methods, properties, or citations.
STRONGLY COUPLED INORGANIC-GRAPHENE HYBRID MATERIALS, APPARATUSES, SYSTEMS AND METHODS
METHOD FOR PREPARING METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE USING SUPERCRITICAL FLUID AND METAL OXIDE NANOPARTICLE/GRAPHENE COMPOSITE PREPARED BY THE SAME
metal oxide MxO
MxO
tin oxide
SnO₂
graphene
TiO₂
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
graphene |
graphene layer thickness (preferred range) | 3–20 nm | graphene |
C:O ratio of graphene layers (preferred) | 15-500 dimensionless | graphene |
surface area of graphene layers (preferred) | 400-2630 m2/g | graphene |
Voltage | 0.02–1.5 V | — |
Thickness | 3–5 nm | — |
Thickness | 3–20 nm | — |
Thickness | 0.5–50 nm | — |
Thickness | 5–50 nm | — |
metal oxide MxO
MxO
tin oxide
SnO₂
graphene
TiO₂
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
graphene |
graphene layer thickness (preferred range) | 3–20 nm | graphene |
C:O ratio of graphene layers (preferred) | 15-500 dimensionless | graphene |
surface area of graphene layers (preferred) | 400-2630 m2/g | graphene |
Voltage | 0.02–1.5 V | — |
Thickness | 3–5 nm | — |
Thickness | 3–20 nm | — |
Thickness | 0.5–50 nm | — |
Thickness | 5–50 nm | — |
metal oxide MxO
MxO
tin oxide
SnO₂
graphene
TiO₂
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
graphene |
graphene layer thickness (preferred range) | 3–20 nm | graphene |
C:O ratio of graphene layers (preferred) | 15-500 dimensionless | graphene |
surface area of graphene layers (preferred) | 400-2630 m2/g | graphene |
Voltage | 0.02–1.5 V | — |
Thickness | 3–5 nm | — |
Thickness | 3–20 nm | — |
Thickness | 0.5–50 nm | — |
Thickness | 5–50 nm | — |
metal oxide MxO
MxO
tin oxide
SnO₂
graphene
TiO₂
Figure 2(A) to (E) are TEM images of calcined SnO 2 -graphene (15 wt% graphene) nanocomposite powder. 2(F) to (H) are TEM images of the Ni O- graphene nanocomposite powder. 2(A) is a bright-field cross-sectional TEM image of the SnO 2 -graphene nanocomposite powder showing layered structures. The …
Figure 3(a) is the XRD pattern of the Sn O 2-graphene nanocomposite powder (15 wt% graphene). Standard reflection peaks of cassiterite Sn O₂ (JCPDS No. 000-0024) are shown as vertical bars.
Figure 4(a) is the cross-sectional TEM image of Mn O 2-graphene nanocomposite paper showing layered structures,
Figure 6(A) is a low angle XRD pattern of the anionic surfactant-Sn O₂- graphene precipitates after reaction time of 1 hr (a), 11 hr (b) and 16 hr (c). Lamellar mesophase with (001) d-spacing of 2.3 nm is observed in the mixture.
Figure 7 (A) is a side-view SEM image of a self-assembled free- standing Sn O 2-graphene nanocomposite (40 wt% graphene) electrode 15- pm thick. Photographs in the inset show a disk-like 3-cm-diameter Sn O 2-graphene nanocomposite paper electrode on the left and a bent paper electrode on the right.
Figures 8 (a,b,c) are cross-sectional TEM images of the Sn O₂- graphene nanocomposite paper.
Figure 9 is a graph showing dQ/dV vs. potential plot of lithiated/de- lithiated SnO₂-graphene nancomposites.
Figure 10 is a graph showing the specific capacity of SnO₂ as a function of charge-discharge cycles in SnO₂-graphene nanocomposite powder (15 wt% graphene) and SnO₂-Super P (40 wt%) at current density of 0.2 A/g.
graphene |
graphene layer thickness (preferred range) | 3–20 nm | graphene |
C:O ratio of graphene layers (preferred) | 15-500 dimensionless | graphene |
surface area of graphene layers (preferred) | 400-2630 m2/g | graphene |
Voltage | 0.02–1.5 V | — |
Thickness | 3–5 nm | — |
Thickness | 3–20 nm | — |
Thickness | 0.5–50 nm | — |
Thickness | 5–50 nm | — |