Patent
US 10,461,332GRAPHENE AND POWER STORAGE DEVICE, AND MANUFACTURING METHOD THEREOF
Hiroatsu TODORIKI
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,461,332Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A, a layer including graphene oxide is formed on a surface of a conductive layer. For example, a dispersion liquid containing graphene oxide is applied …
FIG. 2 illustrates a formation method of graphene oxide of one embodiment of the present invention; 5
FIG. 3 illustrates a formation method of graphene oxide of one embodiment of the present invention;
FIGS. 4A to 4C illustrate a positive electrode of one embodiment of the present invention;
FIG. 5 C illustrates the negative electrode active 24 materials 211 and the graphenes 213. The graphenes 213 cover a plurality of the negative electrode active …
FIG. 6 illustrates a power storage device of one embodiment of the present ink ention;
FIG. 7 illustrates the ca se where the power storage device 5103 is provided in a ceiling 5104 on which the housing 5101 and the light source 5102 are …
FIG. 8C.
FIG. 9 shows a result of cyclic voltammetry measurement;
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
FIG. 11, the reduction current in the first potential sweeping has a 48 peak at around 2 V. This result suggests that the reduction potential of the graphene …
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
FIG. 14 illustrates a conventional formation method of graphene;
FIG. 15 A shows results under the condition 1.
FIGS. 16A and 16B each show a result of cyclic voltammetry measurement. BEST MODE FOR CARRYING OUT THE INVENTION [0024] Embodiments and examples of the present …
FIG. 30 16B shows CV measurement results of a comparative example formed using only glassy carbon as a working electrode. The condition for the CV measurement …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
An electrode for a lithium ion battery comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2 -bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: an electrolyte comprising a lithium salt; and an electrode according to claim 2. Previously presented
The electrode according to claim 2, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 2, wherein the graphene covers the particle of the active material. Previously presented
The electrode according to claim 2, wherein a size of the particle of the active material is 20 nm or more and 100 nm or less. Previously presented
The electrode according to claim 2, wherein a thickness of the electrode is in a range of 20 p m to 100 pm. Previously presented
Canceled
An electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a material comprising: hydrogen atoms; carbon atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than or equal to 90 %; and oxygen atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than or equal to 20 %, wherein the material is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheets, wherein the material has a two-dimensional structure and has a sheet-like shape, and wherein a proportion of sp 2-bonded carbon atoms of the carbon atoms is higher than or equal to 50 % and lower than or equal to 80 %, and wherein th material and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: the electrode according to claim 5; an electrolyte; and a separator. Previously presented
The electrode according to claim 5, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 5, wherein the material covers the particle of the active material. Previously presented
Canceled
Canceled
A power storage device comprising: an electrolyte comprising lithium salt; and an electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2-bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
The electrode according to claim 10, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The power storage device according to claim 10, wherein the graphene covers the active material. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
lithium ion battery electrode
lithium ion battery/power storage device
Materials described outside the worked examples.
graphene (electrochemically reduced graphene oxide)
active material comprising an alkali metal
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
proportion of carbon atoms measured by XPS in claimed graphene | 80–90 % | graphene (electrochemically reduced graphene oxide) |
proportion of oxygen atoms measured by XPS in claimed graphene |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE/ORGANIC SOLVENT DISPERSION AND METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING LITHIUM-ION BATTERY ELECTRODE
POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES, POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION CELL, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES
Patent
Atlas literature
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US 10,461,332Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A, a layer including graphene oxide is formed on a surface of a conductive layer. For example, a dispersion liquid containing graphene oxide is applied …
FIG. 2 illustrates a formation method of graphene oxide of one embodiment of the present invention; 5
FIG. 3 illustrates a formation method of graphene oxide of one embodiment of the present invention;
FIGS. 4A to 4C illustrate a positive electrode of one embodiment of the present invention;
FIG. 5 C illustrates the negative electrode active 24 materials 211 and the graphenes 213. The graphenes 213 cover a plurality of the negative electrode active …
FIG. 6 illustrates a power storage device of one embodiment of the present ink ention;
FIG. 7 illustrates the ca se where the power storage device 5103 is provided in a ceiling 5104 on which the housing 5101 and the light source 5102 are …
FIG. 8C.
FIG. 9 shows a result of cyclic voltammetry measurement;
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
FIG. 11, the reduction current in the first potential sweeping has a 48 peak at around 2 V. This result suggests that the reduction potential of the graphene …
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
FIG. 14 illustrates a conventional formation method of graphene;
FIG. 15 A shows results under the condition 1.
FIGS. 16A and 16B each show a result of cyclic voltammetry measurement. BEST MODE FOR CARRYING OUT THE INVENTION [0024] Embodiments and examples of the present …
FIG. 30 16B shows CV measurement results of a comparative example formed using only glassy carbon as a working electrode. The condition for the CV measurement …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
An electrode for a lithium ion battery comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2 -bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: an electrolyte comprising a lithium salt; and an electrode according to claim 2. Previously presented
The electrode according to claim 2, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 2, wherein the graphene covers the particle of the active material. Previously presented
The electrode according to claim 2, wherein a size of the particle of the active material is 20 nm or more and 100 nm or less. Previously presented
The electrode according to claim 2, wherein a thickness of the electrode is in a range of 20 p m to 100 pm. Previously presented
Canceled
An electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a material comprising: hydrogen atoms; carbon atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than or equal to 90 %; and oxygen atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than or equal to 20 %, wherein the material is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheets, wherein the material has a two-dimensional structure and has a sheet-like shape, and wherein a proportion of sp 2-bonded carbon atoms of the carbon atoms is higher than or equal to 50 % and lower than or equal to 80 %, and wherein th material and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: the electrode according to claim 5; an electrolyte; and a separator. Previously presented
The electrode according to claim 5, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 5, wherein the material covers the particle of the active material. Previously presented
Canceled
Canceled
A power storage device comprising: an electrolyte comprising lithium salt; and an electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2-bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
The electrode according to claim 10, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The power storage device according to claim 10, wherein the graphene covers the active material. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
lithium ion battery electrode
lithium ion battery/power storage device
Materials described outside the worked examples.
graphene (electrochemically reduced graphene oxide)
active material comprising an alkali metal
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
proportion of carbon atoms measured by XPS in claimed graphene | 80–90 % | graphene (electrochemically reduced graphene oxide) |
proportion of oxygen atoms measured by XPS in claimed graphene |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE/ORGANIC SOLVENT DISPERSION AND METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING LITHIUM-ION BATTERY ELECTRODE
POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES, POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION CELL, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES
Patent
Atlas literature
Patent
US 10,461,332Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A, a layer including graphene oxide is formed on a surface of a conductive layer. For example, a dispersion liquid containing graphene oxide is applied …
FIG. 2 illustrates a formation method of graphene oxide of one embodiment of the present invention; 5
FIG. 3 illustrates a formation method of graphene oxide of one embodiment of the present invention;
FIGS. 4A to 4C illustrate a positive electrode of one embodiment of the present invention;
FIG. 5 C illustrates the negative electrode active 24 materials 211 and the graphenes 213. The graphenes 213 cover a plurality of the negative electrode active …
FIG. 6 illustrates a power storage device of one embodiment of the present ink ention;
FIG. 7 illustrates the ca se where the power storage device 5103 is provided in a ceiling 5104 on which the housing 5101 and the light source 5102 are …
FIG. 8C.
FIG. 9 shows a result of cyclic voltammetry measurement;
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
FIG. 11, the reduction current in the first potential sweeping has a 48 peak at around 2 V. This result suggests that the reduction potential of the graphene …
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
FIG. 14 illustrates a conventional formation method of graphene;
FIG. 15 A shows results under the condition 1.
FIGS. 16A and 16B each show a result of cyclic voltammetry measurement. BEST MODE FOR CARRYING OUT THE INVENTION [0024] Embodiments and examples of the present …
FIG. 30 16B shows CV measurement results of a comparative example formed using only glassy carbon as a working electrode. The condition for the CV measurement …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
An electrode for a lithium ion battery comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2 -bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: an electrolyte comprising a lithium salt; and an electrode according to claim 2. Previously presented
The electrode according to claim 2, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 2, wherein the graphene covers the particle of the active material. Previously presented
The electrode according to claim 2, wherein a size of the particle of the active material is 20 nm or more and 100 nm or less. Previously presented
The electrode according to claim 2, wherein a thickness of the electrode is in a range of 20 p m to 100 pm. Previously presented
Canceled
An electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a material comprising: hydrogen atoms; carbon atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than or equal to 90 %; and oxygen atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than or equal to 20 %, wherein the material is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheets, wherein the material has a two-dimensional structure and has a sheet-like shape, and wherein a proportion of sp 2-bonded carbon atoms of the carbon atoms is higher than or equal to 50 % and lower than or equal to 80 %, and wherein th material and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: the electrode according to claim 5; an electrolyte; and a separator. Previously presented
The electrode according to claim 5, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 5, wherein the material covers the particle of the active material. Previously presented
Canceled
Canceled
A power storage device comprising: an electrolyte comprising lithium salt; and an electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2-bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
The electrode according to claim 10, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The power storage device according to claim 10, wherein the graphene covers the active material. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
lithium ion battery electrode
lithium ion battery/power storage device
Materials described outside the worked examples.
graphene (electrochemically reduced graphene oxide)
active material comprising an alkali metal
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
proportion of carbon atoms measured by XPS in claimed graphene | 80–90 % | graphene (electrochemically reduced graphene oxide) |
proportion of oxygen atoms measured by XPS in claimed graphene |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE/ORGANIC SOLVENT DISPERSION AND METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING LITHIUM-ION BATTERY ELECTRODE
POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES, POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION CELL, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES
Patent
Atlas literature
Patent
US 10,461,332Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A, a layer including graphene oxide is formed on a surface of a conductive layer. For example, a dispersion liquid containing graphene oxide is applied …
FIG. 2 illustrates a formation method of graphene oxide of one embodiment of the present invention; 5
FIG. 3 illustrates a formation method of graphene oxide of one embodiment of the present invention;
FIGS. 4A to 4C illustrate a positive electrode of one embodiment of the present invention;
FIG. 5 C illustrates the negative electrode active 24 materials 211 and the graphenes 213. The graphenes 213 cover a plurality of the negative electrode active …
FIG. 6 illustrates a power storage device of one embodiment of the present ink ention;
FIG. 7 illustrates the ca se where the power storage device 5103 is provided in a ceiling 5104 on which the housing 5101 and the light source 5102 are …
FIG. 8C.
FIG. 9 shows a result of cyclic voltammetry measurement;
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
FIG. 11, the reduction current in the first potential sweeping has a 48 peak at around 2 V. This result suggests that the reduction potential of the graphene …
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
FIG. 14 illustrates a conventional formation method of graphene;
FIG. 15 A shows results under the condition 1.
FIGS. 16A and 16B each show a result of cyclic voltammetry measurement. BEST MODE FOR CARRYING OUT THE INVENTION [0024] Embodiments and examples of the present …
FIG. 30 16B shows CV measurement results of a comparative example formed using only glassy carbon as a working electrode. The condition for the CV measurement …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
An electrode for a lithium ion battery comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2 -bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: an electrolyte comprising a lithium salt; and an electrode according to claim 2. Previously presented
The electrode according to claim 2, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 2, wherein the graphene covers the particle of the active material. Previously presented
The electrode according to claim 2, wherein a size of the particle of the active material is 20 nm or more and 100 nm or less. Previously presented
The electrode according to claim 2, wherein a thickness of the electrode is in a range of 20 p m to 100 pm. Previously presented
Canceled
An electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material comprising an alkali metal; and a material comprising: hydrogen atoms; carbon atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than or equal to 90 %; and oxygen atoms whose proportion measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than or equal to 20 %, wherein the material is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheets, wherein the material has a two-dimensional structure and has a sheet-like shape, and wherein a proportion of sp 2-bonded carbon atoms of the carbon atoms is higher than or equal to 50 % and lower than or equal to 80 %, and wherein th material and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
A power storage device comprising: the electrode according to claim 5; an electrolyte; and a separator. Previously presented
The electrode according to claim 5, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The electrode according to claim 5, wherein the material covers the particle of the active material. Previously presented
Canceled
Canceled
A power storage device comprising: an electrolyte comprising lithium salt; and an electrode comprising: a current collector; and an active material layer over the current collector, the active material layer comprising: a particle of an active material; and a graphene comprising hydrogen atoms, carbon atoms and oxygen atoms, wherein the graphene is a one-atom-thick sheet or a stack of 2 to 100 layers of the sheet, wherein the graphene has a two-dimensional structure and has a sheet-like shape, wherein a proportion of the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 80 % and lower than 90 %, wherein a proportion of the oxygen atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 10 % and lower than 20 %, wherein a sum of the proportion of the carbon atoms and the proportion of the oxygen atoms is lower than 100 %, wherein, in bonds of the carbon atoms, a proportion of sp 2-bonded carbon atoms among the carbon atoms measured by X-ray photoelectron spectroscopy is higher than or equal to 50 % and lower than or equal to 80 %, and wherein the graphene and the particle of the active material are randomly dispersed in the active material layer. [[, and]]. Currently amended
The electrode according to claim 10, wherein the active material comprises an olivine-type lithium-containing phosphate. Previously presented
The power storage device according to claim 10, wherein the graphene covers the active material. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
lithium ion battery electrode
lithium ion battery/power storage device
Materials described outside the worked examples.
graphene (electrochemically reduced graphene oxide)
active material comprising an alkali metal
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 10 shows a result of cyclic voltammetry measurement; FIG. I I shows a result of cyclic voltammetry measurement; F IG. 12 shows XPS analyses of the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
proportion of carbon atoms measured by XPS in claimed graphene | 80–90 % | graphene (electrochemically reduced graphene oxide) |
proportion of oxygen atoms measured by XPS in claimed graphene |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE/ORGANIC SOLVENT DISPERSION AND METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING LITHIUM-ION BATTERY ELECTRODE
POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES, POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION CELL, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES
lithium salt electrolyte
two-dimensional sheet material comprising hydrogen, carbon, and oxygen atoms
olivine-type lithium-containing phosphate
graphene oxide
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
graphene (electrochemically reduced graphene oxide) |
proportion of sp2-bonded carbon atoms among carbon atoms measured by XPS in claimed graphene | 50–80 % | graphene (electrochemically reduced graphene oxide) |
Voltage | 3–4 V | — |
Voltage | 1.5–3 V | — |
Voltage | 1.8–3 V | — |
lithium salt electrolyte
two-dimensional sheet material comprising hydrogen, carbon, and oxygen atoms
olivine-type lithium-containing phosphate
graphene oxide
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
graphene (electrochemically reduced graphene oxide) |
proportion of sp2-bonded carbon atoms among carbon atoms measured by XPS in claimed graphene | 50–80 % | graphene (electrochemically reduced graphene oxide) |
Voltage | 3–4 V | — |
Voltage | 1.5–3 V | — |
Voltage | 1.8–3 V | — |
lithium salt electrolyte
two-dimensional sheet material comprising hydrogen, carbon, and oxygen atoms
olivine-type lithium-containing phosphate
graphene oxide
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
graphene (electrochemically reduced graphene oxide) |
proportion of sp2-bonded carbon atoms among carbon atoms measured by XPS in claimed graphene | 50–80 % | graphene (electrochemically reduced graphene oxide) |
Voltage | 3–4 V | — |
Voltage | 1.5–3 V | — |
Voltage | 1.8–3 V | — |
lithium salt electrolyte
two-dimensional sheet material comprising hydrogen, carbon, and oxygen atoms
olivine-type lithium-containing phosphate
graphene oxide
FIGS. 12 and 13 show X-ray photoelectron spectroscopy (XPS) analysis results of the surface elemental composition of carbon, oxygen, and another element, and …
FIG. 13 shows XPS analyses of the states of atomic bonds; 20
graphene (electrochemically reduced graphene oxide) |
proportion of sp2-bonded carbon atoms among carbon atoms measured by XPS in claimed graphene | 50–80 % | graphene (electrochemically reduced graphene oxide) |
Voltage | 3–4 V | — |
Voltage | 1.5–3 V | — |
Voltage | 1.8–3 V | — |