Patent
US 10,374,223OF THE INVENTION: POSITIVE ELECTRODE ACTIVE
Eiichiro TAMAKI
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,374,223Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Positive electrode active material and graphene composite particles which comprise: positive electrode active material particles and a matrix containing partially functionalized graphene, wherein the partially functionalized graphene comprises graphene modified with a hydroxyl, carboxyl, ketone or epoxy group, and the composite particles have a ratio of functionalization that is not less than 0.15 and not more than 0.80, the ratio of functionalization being determined, based on measurements by X-ray photoelectron spectroscopic measurement of the composite particles, from the following equation: Ratio of functionalization = [(peak area based on C-O single bond) + (peak area based on C= O double bond) + (peak area based on COO bond)]/(peak area based on C-C, C=C and C-H bonds). Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particle ratio of functionalization is not less than 0.30 and not more than 0.80. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particles have a mass ratio of carbon, in terms of percent, of less than 2% and not more than 20%. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the positive electrode active material is an olivine-based active material particle or a layered oxide active material particle. Previously presented
A positive electrode material for a lithium ion battery which contains the positive electrode active material and graphene composite particles according to claim 1. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wher e in upon being subjected to Raman spectroscopy the composite particles exhibit a Raman spectrometric G band peak position of 1600 cm I or more and a peak half bandwidth is 90 cm 1 or less. Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the matrix has voids. Previously presented
4-6. Canceled
Canceled
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is heated at a temperature of 1 50° C to 250 ° C without a reducing agent in the air to reduce the graphene oxide. Withdrawn
(Withdrawn) The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein as the graphene oxide, a graphene oxide, in which an elemental ratio of oxygen atoms to carbon atoms of not less than 0.3 and not more than 1 is used. Withdrawn
The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein the method includes the steps of forming a composite of graphene oxide, positive electrode active material particles and an additive capable of being removed by heating or dissolution to prepare precursor particles; and then removing the additive from the precursor particles. Withdrawn
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is treated with an alcoholic reducing agent selected from methanol, ethanol, propanol, isopropyl alcohol, butanol, benzyl alcohol, phenol, catechol, ethanolamine, dopamine, ethylene glycol, propylene glycol, and diethylene glycol or an inorganic reducing agent selected from sodium dithionite, potassium dithionite, phosphorous acid, sodium borohydride, and hydrazine to reduce the graphene oxide. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
positive electrode for lithium ion battery
Materials described outside the worked examples.
positive electrode active material particles
partially functionalized graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Ratio of functionalization (XPS) — claimed range | 0.15–0.8 dimensionless | partially functionalized graphene |
Ratio of functionalization (XPS) — narrower claimed range (claim 2) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,374,223Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Positive electrode active material and graphene composite particles which comprise: positive electrode active material particles and a matrix containing partially functionalized graphene, wherein the partially functionalized graphene comprises graphene modified with a hydroxyl, carboxyl, ketone or epoxy group, and the composite particles have a ratio of functionalization that is not less than 0.15 and not more than 0.80, the ratio of functionalization being determined, based on measurements by X-ray photoelectron spectroscopic measurement of the composite particles, from the following equation: Ratio of functionalization = [(peak area based on C-O single bond) + (peak area based on C= O double bond) + (peak area based on COO bond)]/(peak area based on C-C, C=C and C-H bonds). Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particle ratio of functionalization is not less than 0.30 and not more than 0.80. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particles have a mass ratio of carbon, in terms of percent, of less than 2% and not more than 20%. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the positive electrode active material is an olivine-based active material particle or a layered oxide active material particle. Previously presented
A positive electrode material for a lithium ion battery which contains the positive electrode active material and graphene composite particles according to claim 1. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wher e in upon being subjected to Raman spectroscopy the composite particles exhibit a Raman spectrometric G band peak position of 1600 cm I or more and a peak half bandwidth is 90 cm 1 or less. Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the matrix has voids. Previously presented
4-6. Canceled
Canceled
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is heated at a temperature of 1 50° C to 250 ° C without a reducing agent in the air to reduce the graphene oxide. Withdrawn
(Withdrawn) The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein as the graphene oxide, a graphene oxide, in which an elemental ratio of oxygen atoms to carbon atoms of not less than 0.3 and not more than 1 is used. Withdrawn
The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein the method includes the steps of forming a composite of graphene oxide, positive electrode active material particles and an additive capable of being removed by heating or dissolution to prepare precursor particles; and then removing the additive from the precursor particles. Withdrawn
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is treated with an alcoholic reducing agent selected from methanol, ethanol, propanol, isopropyl alcohol, butanol, benzyl alcohol, phenol, catechol, ethanolamine, dopamine, ethylene glycol, propylene glycol, and diethylene glycol or an inorganic reducing agent selected from sodium dithionite, potassium dithionite, phosphorous acid, sodium borohydride, and hydrazine to reduce the graphene oxide. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
positive electrode for lithium ion battery
Materials described outside the worked examples.
positive electrode active material particles
partially functionalized graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Ratio of functionalization (XPS) — claimed range | 0.15–0.8 dimensionless | partially functionalized graphene |
Ratio of functionalization (XPS) — narrower claimed range (claim 2) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,374,223Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Positive electrode active material and graphene composite particles which comprise: positive electrode active material particles and a matrix containing partially functionalized graphene, wherein the partially functionalized graphene comprises graphene modified with a hydroxyl, carboxyl, ketone or epoxy group, and the composite particles have a ratio of functionalization that is not less than 0.15 and not more than 0.80, the ratio of functionalization being determined, based on measurements by X-ray photoelectron spectroscopic measurement of the composite particles, from the following equation: Ratio of functionalization = [(peak area based on C-O single bond) + (peak area based on C= O double bond) + (peak area based on COO bond)]/(peak area based on C-C, C=C and C-H bonds). Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particle ratio of functionalization is not less than 0.30 and not more than 0.80. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particles have a mass ratio of carbon, in terms of percent, of less than 2% and not more than 20%. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the positive electrode active material is an olivine-based active material particle or a layered oxide active material particle. Previously presented
A positive electrode material for a lithium ion battery which contains the positive electrode active material and graphene composite particles according to claim 1. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wher e in upon being subjected to Raman spectroscopy the composite particles exhibit a Raman spectrometric G band peak position of 1600 cm I or more and a peak half bandwidth is 90 cm 1 or less. Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the matrix has voids. Previously presented
4-6. Canceled
Canceled
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is heated at a temperature of 1 50° C to 250 ° C without a reducing agent in the air to reduce the graphene oxide. Withdrawn
(Withdrawn) The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein as the graphene oxide, a graphene oxide, in which an elemental ratio of oxygen atoms to carbon atoms of not less than 0.3 and not more than 1 is used. Withdrawn
The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein the method includes the steps of forming a composite of graphene oxide, positive electrode active material particles and an additive capable of being removed by heating or dissolution to prepare precursor particles; and then removing the additive from the precursor particles. Withdrawn
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is treated with an alcoholic reducing agent selected from methanol, ethanol, propanol, isopropyl alcohol, butanol, benzyl alcohol, phenol, catechol, ethanolamine, dopamine, ethylene glycol, propylene glycol, and diethylene glycol or an inorganic reducing agent selected from sodium dithionite, potassium dithionite, phosphorous acid, sodium borohydride, and hydrazine to reduce the graphene oxide. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
positive electrode for lithium ion battery
Materials described outside the worked examples.
positive electrode active material particles
partially functionalized graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Ratio of functionalization (XPS) — claimed range | 0.15–0.8 dimensionless | partially functionalized graphene |
Ratio of functionalization (XPS) — narrower claimed range (claim 2) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,374,223Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Positive electrode active material and graphene composite particles which comprise: positive electrode active material particles and a matrix containing partially functionalized graphene, wherein the partially functionalized graphene comprises graphene modified with a hydroxyl, carboxyl, ketone or epoxy group, and the composite particles have a ratio of functionalization that is not less than 0.15 and not more than 0.80, the ratio of functionalization being determined, based on measurements by X-ray photoelectron spectroscopic measurement of the composite particles, from the following equation: Ratio of functionalization = [(peak area based on C-O single bond) + (peak area based on C= O double bond) + (peak area based on COO bond)]/(peak area based on C-C, C=C and C-H bonds). Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particle ratio of functionalization is not less than 0.30 and not more than 0.80. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the composite particles have a mass ratio of carbon, in terms of percent, of less than 2% and not more than 20%. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wherein the positive electrode active material is an olivine-based active material particle or a layered oxide active material particle. Previously presented
A positive electrode material for a lithium ion battery which contains the positive electrode active material and graphene composite particles according to claim 1. Previously presented
The positive electrode active material and graphene composite particles according to claim 1, wher e in upon being subjected to Raman spectroscopy the composite particles exhibit a Raman spectrometric G band peak position of 1600 cm I or more and a peak half bandwidth is 90 cm 1 or less. Currently amended
The positive electrode active material and graphene composite particles according to claim 1, wherein the matrix has voids. Previously presented
4-6. Canceled
Canceled
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is heated at a temperature of 1 50° C to 250 ° C without a reducing agent in the air to reduce the graphene oxide. Withdrawn
(Withdrawn) The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein as the graphene oxide, a graphene oxide, in which an elemental ratio of oxygen atoms to carbon atoms of not less than 0.3 and not more than 1 is used. Withdrawn
The method for manufacturing positive electrode active material and graphene composite particles according to claim 10, wherein the method includes the steps of forming a composite of graphene oxide, positive electrode active material particles and an additive capable of being removed by heating or dissolution to prepare precursor particles; and then removing the additive from the precursor particles. Withdrawn
A method for manufacturing positive electrode active material and graphene composite particles, wherein after a precursor is prepared by formation of a composite of graphene oxide and positive electrode active material particles, the precursor is treated with an alcoholic reducing agent selected from methanol, ethanol, propanol, isopropyl alcohol, butanol, benzyl alcohol, phenol, catechol, ethanolamine, dopamine, ethylene glycol, propylene glycol, and diethylene glycol or an inorganic reducing agent selected from sodium dithionite, potassium dithionite, phosphorous acid, sodium borohydride, and hydrazine to reduce the graphene oxide. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
positive electrode for lithium ion battery
Materials described outside the worked examples.
positive electrode active material particles
partially functionalized graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Ratio of functionalization (XPS) — claimed range | 0.15–0.8 dimensionless | partially functionalized graphene |
Ratio of functionalization (XPS) — narrower claimed range (claim 2) |
Related documents with shared materials, methods, properties, or citations.
olivine-based active material particle
layered oxide active material particle
Li-rich active material particle
graphene oxide
lithium iron phosphate
LiFePO₄
lithium manganese phosphate
LiMnPO₄
lithium cobaltate
LiCoO₂
lithium nickelate
LiNiO₂
spinel type lithium manganate
LiMn₂O₄
partially functionalized graphene |
Carbon mass ratio of composite particles (claim 3) | 2–20 % | positive electrode active material particlespartially functionalized graphene |
Raman G band peak position of composite particles (claim 15) | ≥ 1600 cm⁻¹ | partially functionalized graphene |
Raman G band peak half bandwidth of composite particles (claim 15) | ≤ 90 cm⁻¹ | partially functionalized graphene |
Void ratio of graphene matrix (claim 17) | 10–50 % | partially functionalized graphene |
O/C elemental ratio of graphene oxide precursor (claim 12) | 0.3–1 dimensionless | graphene oxide |
Temperature | 50–250 °C | — |
Temperature | 500–800 °C | — |
olivine-based active material particle
layered oxide active material particle
Li-rich active material particle
graphene oxide
lithium iron phosphate
LiFePO₄
lithium manganese phosphate
LiMnPO₄
lithium cobaltate
LiCoO₂
lithium nickelate
LiNiO₂
spinel type lithium manganate
LiMn₂O₄
partially functionalized graphene |
Carbon mass ratio of composite particles (claim 3) | 2–20 % | positive electrode active material particlespartially functionalized graphene |
Raman G band peak position of composite particles (claim 15) | ≥ 1600 cm⁻¹ | partially functionalized graphene |
Raman G band peak half bandwidth of composite particles (claim 15) | ≤ 90 cm⁻¹ | partially functionalized graphene |
Void ratio of graphene matrix (claim 17) | 10–50 % | partially functionalized graphene |
O/C elemental ratio of graphene oxide precursor (claim 12) | 0.3–1 dimensionless | graphene oxide |
Temperature | 50–250 °C | — |
Temperature | 500–800 °C | — |
olivine-based active material particle
layered oxide active material particle
Li-rich active material particle
graphene oxide
lithium iron phosphate
LiFePO₄
lithium manganese phosphate
LiMnPO₄
lithium cobaltate
LiCoO₂
lithium nickelate
LiNiO₂
spinel type lithium manganate
LiMn₂O₄
partially functionalized graphene |
Carbon mass ratio of composite particles (claim 3) | 2–20 % | positive electrode active material particlespartially functionalized graphene |
Raman G band peak position of composite particles (claim 15) | ≥ 1600 cm⁻¹ | partially functionalized graphene |
Raman G band peak half bandwidth of composite particles (claim 15) | ≤ 90 cm⁻¹ | partially functionalized graphene |
Void ratio of graphene matrix (claim 17) | 10–50 % | partially functionalized graphene |
O/C elemental ratio of graphene oxide precursor (claim 12) | 0.3–1 dimensionless | graphene oxide |
Temperature | 50–250 °C | — |
Temperature | 500–800 °C | — |
olivine-based active material particle
layered oxide active material particle
Li-rich active material particle
graphene oxide
lithium iron phosphate
LiFePO₄
lithium manganese phosphate
LiMnPO₄
lithium cobaltate
LiCoO₂
lithium nickelate
LiNiO₂
spinel type lithium manganate
LiMn₂O₄
partially functionalized graphene |
Carbon mass ratio of composite particles (claim 3) | 2–20 % | positive electrode active material particlespartially functionalized graphene |
Raman G band peak position of composite particles (claim 15) | ≥ 1600 cm⁻¹ | partially functionalized graphene |
Raman G band peak half bandwidth of composite particles (claim 15) | ≤ 90 cm⁻¹ | partially functionalized graphene |
Void ratio of graphene matrix (claim 17) | 10–50 % | partially functionalized graphene |
O/C elemental ratio of graphene oxide precursor (claim 12) | 0.3–1 dimensionless | graphene oxide |
Temperature | 50–250 °C | — |
Temperature | 500–800 °C | — |