Patent
US 10,079,389SILICON-GRAPHENE NANOCOMPOSITES FOR ELECTROCHEMICAL APPLICATIONS
Inhwan DO
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,079,389Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A is a schematic illustration of a nanographitic composite in which the electroactive particle is silicon, e.g., a silicon-nanographitic or nSiG …
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 6A. There is a layer with containing both Si and C. [0097]
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 10. These graphene nanoplatelets are much larger than the nanoscale graphitic nanoplatelets used to from the graphitic nanoplatelet coating in the …
FIG. 11 is a schematic illustration of an anode incorporating the nanographitic composite according to one or more embodiments. [0073]
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
FIG. 14B are illustrations of prior art approaches to combining silicon with carbon. DETAILED DESCRIPTION [0076] A nanographitic composite for use as a battery …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-29. Cancelled. Canceled
Canceled
An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The electrode of claim 30, further comprising a conductive additive. Withdrawn
A lithium ion battery comprising: an anode according to claim 30; a cathode; a separator spacing apart the anode and the cathode; and an electrolyte in contact with the anode and the cathode. Withdrawn
Canceled
36-38. Cancelled. Canceled
Canceled
A nanographitic composite comprising: a plurality of composite particles, each composite particle comprising: an electroactive particle of one of: an alloy or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, or Cd; an oxide, carbide, nitride, sulfide, phosphide, selenide, telluride, antimonide, or their mixtures of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Fe, or Cd; or one or more metals of silicon, tin, iron, magnesium, aluminum, lead, gold, silver, titanium, platinum, palladium, ruthenium, copper, nickel, rhodium and nickel and combinations thereof; a coating layer comprising an inner film comprising graphene that is bound by covalent or interdiffusion bonding to the electroactive particle and an outer layer of graphene nanoplatelets disposed over the inner layer of film comprising the graphene wherein the outer layer of the graphene nanoplatelets has a longest lateral dimension that is less than a longest lateral dimension of the electroactive particle, and wherein the outer layer of the graphene nanoplatelets is configured to accommodate a volume change in the electroactive particle and the graphene nanoplatelets are not strictly planar to a surface of the electoactive particle and take on a range of orientations. Currently amended
The nanographitic composite of claim 39, wherein the inner film comprises a mixture of carbon and silicon. Previously presented
(Previously Presented The nanographitic composite of claim 39, wherein the inner film has a thickness in the range of 1-25 nm.
The nanographitic composite of claim 39, wherein the inner film is integral with the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the inner film is crystalline. Previously presented
The nanographitic composite of claim 39, wherein the inner film is disordered or amorphous. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle comprises silicon and the inner film comprises a SiC intermetallic. Previously presented
The nanographitic composite of claim 39, wherein the inner film is covalently bonded to the electroactive particle. Previously presented
The nanographitic composite of claim 39 wherein the electroactive particle comprises silicon and the silicon and carbon of the inner film form a compositional gradient across its thickness. Previously presented
The nanographitic composite of claim 39, wherein the plurality of composite particles form agglomerates. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a thickness of 0.34 nm to 50 nm and lateral dimensions of less than 900 nm. Original
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets comprises multiple layers of graphene nanoplatelets. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle is the one or more metals. Currently amended
The nanographitic composite of claim 39, wherein electroactive particle comprises silicon. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.50 g/cm 3. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.8 g/cm 3. Original
60 An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets are associated with the inner film through van der Waals attraction. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 50% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 25% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises tangled graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises stretched graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension of less than 500 nm Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 10 nm⁻⁷⁰⁰ nm. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 30 nm to 200 nm. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
anode electrode for lithium ion battery
lithium ion battery
Materials described outside the worked examples.
nanographitic composite
inner film comprising graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density greater than 0.50 g/cm3 (claim 57) | ≥ 0.5 g/cm3 | nanographitic composite |
tap density greater than 0.8 g/cm3 (claim 58) | ≥ 0.8 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,079,389Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A is a schematic illustration of a nanographitic composite in which the electroactive particle is silicon, e.g., a silicon-nanographitic or nSiG …
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 6A. There is a layer with containing both Si and C. [0097]
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 10. These graphene nanoplatelets are much larger than the nanoscale graphitic nanoplatelets used to from the graphitic nanoplatelet coating in the …
FIG. 11 is a schematic illustration of an anode incorporating the nanographitic composite according to one or more embodiments. [0073]
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
FIG. 14B are illustrations of prior art approaches to combining silicon with carbon. DETAILED DESCRIPTION [0076] A nanographitic composite for use as a battery …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-29. Cancelled. Canceled
Canceled
An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The electrode of claim 30, further comprising a conductive additive. Withdrawn
A lithium ion battery comprising: an anode according to claim 30; a cathode; a separator spacing apart the anode and the cathode; and an electrolyte in contact with the anode and the cathode. Withdrawn
Canceled
36-38. Cancelled. Canceled
Canceled
A nanographitic composite comprising: a plurality of composite particles, each composite particle comprising: an electroactive particle of one of: an alloy or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, or Cd; an oxide, carbide, nitride, sulfide, phosphide, selenide, telluride, antimonide, or their mixtures of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Fe, or Cd; or one or more metals of silicon, tin, iron, magnesium, aluminum, lead, gold, silver, titanium, platinum, palladium, ruthenium, copper, nickel, rhodium and nickel and combinations thereof; a coating layer comprising an inner film comprising graphene that is bound by covalent or interdiffusion bonding to the electroactive particle and an outer layer of graphene nanoplatelets disposed over the inner layer of film comprising the graphene wherein the outer layer of the graphene nanoplatelets has a longest lateral dimension that is less than a longest lateral dimension of the electroactive particle, and wherein the outer layer of the graphene nanoplatelets is configured to accommodate a volume change in the electroactive particle and the graphene nanoplatelets are not strictly planar to a surface of the electoactive particle and take on a range of orientations. Currently amended
The nanographitic composite of claim 39, wherein the inner film comprises a mixture of carbon and silicon. Previously presented
(Previously Presented The nanographitic composite of claim 39, wherein the inner film has a thickness in the range of 1-25 nm.
The nanographitic composite of claim 39, wherein the inner film is integral with the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the inner film is crystalline. Previously presented
The nanographitic composite of claim 39, wherein the inner film is disordered or amorphous. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle comprises silicon and the inner film comprises a SiC intermetallic. Previously presented
The nanographitic composite of claim 39, wherein the inner film is covalently bonded to the electroactive particle. Previously presented
The nanographitic composite of claim 39 wherein the electroactive particle comprises silicon and the silicon and carbon of the inner film form a compositional gradient across its thickness. Previously presented
The nanographitic composite of claim 39, wherein the plurality of composite particles form agglomerates. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a thickness of 0.34 nm to 50 nm and lateral dimensions of less than 900 nm. Original
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets comprises multiple layers of graphene nanoplatelets. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle is the one or more metals. Currently amended
The nanographitic composite of claim 39, wherein electroactive particle comprises silicon. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.50 g/cm 3. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.8 g/cm 3. Original
60 An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets are associated with the inner film through van der Waals attraction. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 50% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 25% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises tangled graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises stretched graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension of less than 500 nm Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 10 nm⁻⁷⁰⁰ nm. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 30 nm to 200 nm. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
anode electrode for lithium ion battery
lithium ion battery
Materials described outside the worked examples.
nanographitic composite
inner film comprising graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density greater than 0.50 g/cm3 (claim 57) | ≥ 0.5 g/cm3 | nanographitic composite |
tap density greater than 0.8 g/cm3 (claim 58) | ≥ 0.8 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,079,389Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A is a schematic illustration of a nanographitic composite in which the electroactive particle is silicon, e.g., a silicon-nanographitic or nSiG …
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 6A. There is a layer with containing both Si and C. [0097]
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 10. These graphene nanoplatelets are much larger than the nanoscale graphitic nanoplatelets used to from the graphitic nanoplatelet coating in the …
FIG. 11 is a schematic illustration of an anode incorporating the nanographitic composite according to one or more embodiments. [0073]
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
FIG. 14B are illustrations of prior art approaches to combining silicon with carbon. DETAILED DESCRIPTION [0076] A nanographitic composite for use as a battery …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-29. Cancelled. Canceled
Canceled
An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The electrode of claim 30, further comprising a conductive additive. Withdrawn
A lithium ion battery comprising: an anode according to claim 30; a cathode; a separator spacing apart the anode and the cathode; and an electrolyte in contact with the anode and the cathode. Withdrawn
Canceled
36-38. Cancelled. Canceled
Canceled
A nanographitic composite comprising: a plurality of composite particles, each composite particle comprising: an electroactive particle of one of: an alloy or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, or Cd; an oxide, carbide, nitride, sulfide, phosphide, selenide, telluride, antimonide, or their mixtures of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Fe, or Cd; or one or more metals of silicon, tin, iron, magnesium, aluminum, lead, gold, silver, titanium, platinum, palladium, ruthenium, copper, nickel, rhodium and nickel and combinations thereof; a coating layer comprising an inner film comprising graphene that is bound by covalent or interdiffusion bonding to the electroactive particle and an outer layer of graphene nanoplatelets disposed over the inner layer of film comprising the graphene wherein the outer layer of the graphene nanoplatelets has a longest lateral dimension that is less than a longest lateral dimension of the electroactive particle, and wherein the outer layer of the graphene nanoplatelets is configured to accommodate a volume change in the electroactive particle and the graphene nanoplatelets are not strictly planar to a surface of the electoactive particle and take on a range of orientations. Currently amended
The nanographitic composite of claim 39, wherein the inner film comprises a mixture of carbon and silicon. Previously presented
(Previously Presented The nanographitic composite of claim 39, wherein the inner film has a thickness in the range of 1-25 nm.
The nanographitic composite of claim 39, wherein the inner film is integral with the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the inner film is crystalline. Previously presented
The nanographitic composite of claim 39, wherein the inner film is disordered or amorphous. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle comprises silicon and the inner film comprises a SiC intermetallic. Previously presented
The nanographitic composite of claim 39, wherein the inner film is covalently bonded to the electroactive particle. Previously presented
The nanographitic composite of claim 39 wherein the electroactive particle comprises silicon and the silicon and carbon of the inner film form a compositional gradient across its thickness. Previously presented
The nanographitic composite of claim 39, wherein the plurality of composite particles form agglomerates. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a thickness of 0.34 nm to 50 nm and lateral dimensions of less than 900 nm. Original
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets comprises multiple layers of graphene nanoplatelets. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle is the one or more metals. Currently amended
The nanographitic composite of claim 39, wherein electroactive particle comprises silicon. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.50 g/cm 3. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.8 g/cm 3. Original
60 An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets are associated with the inner film through van der Waals attraction. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 50% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 25% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises tangled graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises stretched graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension of less than 500 nm Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 10 nm⁻⁷⁰⁰ nm. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 30 nm to 200 nm. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
anode electrode for lithium ion battery
lithium ion battery
Materials described outside the worked examples.
nanographitic composite
inner film comprising graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density greater than 0.50 g/cm3 (claim 57) | ≥ 0.5 g/cm3 | nanographitic composite |
tap density greater than 0.8 g/cm3 (claim 58) | ≥ 0.8 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,079,389Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A is a schematic illustration of a nanographitic composite in which the electroactive particle is silicon, e.g., a silicon-nanographitic or nSiG …
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 6A. There is a layer with containing both Si and C. [0097]
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 10. These graphene nanoplatelets are much larger than the nanoscale graphitic nanoplatelets used to from the graphitic nanoplatelet coating in the …
FIG. 11 is a schematic illustration of an anode incorporating the nanographitic composite according to one or more embodiments. [0073]
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
FIG. 14B are illustrations of prior art approaches to combining silicon with carbon. DETAILED DESCRIPTION [0076] A nanographitic composite for use as a battery …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-29. Cancelled. Canceled
Canceled
An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The electrode of claim 30, further comprising a conductive additive. Withdrawn
A lithium ion battery comprising: an anode according to claim 30; a cathode; a separator spacing apart the anode and the cathode; and an electrolyte in contact with the anode and the cathode. Withdrawn
Canceled
36-38. Cancelled. Canceled
Canceled
A nanographitic composite comprising: a plurality of composite particles, each composite particle comprising: an electroactive particle of one of: an alloy or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, or Cd; an oxide, carbide, nitride, sulfide, phosphide, selenide, telluride, antimonide, or their mixtures of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Fe, or Cd; or one or more metals of silicon, tin, iron, magnesium, aluminum, lead, gold, silver, titanium, platinum, palladium, ruthenium, copper, nickel, rhodium and nickel and combinations thereof; a coating layer comprising an inner film comprising graphene that is bound by covalent or interdiffusion bonding to the electroactive particle and an outer layer of graphene nanoplatelets disposed over the inner layer of film comprising the graphene wherein the outer layer of the graphene nanoplatelets has a longest lateral dimension that is less than a longest lateral dimension of the electroactive particle, and wherein the outer layer of the graphene nanoplatelets is configured to accommodate a volume change in the electroactive particle and the graphene nanoplatelets are not strictly planar to a surface of the electoactive particle and take on a range of orientations. Currently amended
The nanographitic composite of claim 39, wherein the inner film comprises a mixture of carbon and silicon. Previously presented
(Previously Presented The nanographitic composite of claim 39, wherein the inner film has a thickness in the range of 1-25 nm.
The nanographitic composite of claim 39, wherein the inner film is integral with the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the inner film is crystalline. Previously presented
The nanographitic composite of claim 39, wherein the inner film is disordered or amorphous. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle comprises silicon and the inner film comprises a SiC intermetallic. Previously presented
The nanographitic composite of claim 39, wherein the inner film is covalently bonded to the electroactive particle. Previously presented
The nanographitic composite of claim 39 wherein the electroactive particle comprises silicon and the silicon and carbon of the inner film form a compositional gradient across its thickness. Previously presented
The nanographitic composite of claim 39, wherein the plurality of composite particles form agglomerates. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a thickness of 0.34 nm to 50 nm and lateral dimensions of less than 900 nm. Original
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets comprises multiple layers of graphene nanoplatelets. Previously presented
The nanographitic composite of claim 39, wherein the electroactive particle is the one or more metals. Currently amended
The nanographitic composite of claim 39, wherein electroactive particle comprises silicon. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.50 g/cm 3. Original
The nanographitic composite of claim 39, wherein the composite has a tap density of greater than 0.8 g/cm 3. Original
60 An electrode for use as an anode in a lithium ion battery, said electrode comprising: (a) the nanographitic composite according to claim 39; and (b) a binder. Withdrawn
The nanographitic composite of claim 39, wherein the outer layer of graphene nanoplatelets are associated with the inner film through van der Waals attraction. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 50% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein graphene nanoplatelets in the outer layer comprises graphene nanoplatelets having a longest lateral dimension that is less than 25% of a longest lateral dimension the electroactive particle. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises tangled graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets of the outer layer comprises stretched graphene. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension of less than 500 nm Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 10 nm⁻⁷⁰⁰ nm. Previously presented
The nanographitic composite of claim 39, wherein the graphene nanoplatelets have a longest lateral dimension in the range of 30 nm to 200 nm. Previously presented
Layer stacks claimed or described, ordered top of device to substrate.
anode electrode for lithium ion battery
lithium ion battery
Materials described outside the worked examples.
nanographitic composite
inner film comprising graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a TEM image of a silicon particle 200 coated with a large number of graphene nanoplatelets 210 (scale bar is 100 nm) according to one or more …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
tap density greater than 0.50 g/cm3 (claim 57) | ≥ 0.5 g/cm3 | nanographitic composite |
tap density greater than 0.8 g/cm3 (claim 58) | ≥ 0.8 g/cm3 |
Related documents with shared materials, methods, properties, or citations.
graphene nanoplatelets
graphene (conductive additive)
silicon
Si
SiC intermetallic
SiC
conductive carbon additive
electroactive particle (general)
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
BET surface area 50-200 m2/g | 50–200 m2/g | nanographitic composite |
Thickness | 0.34–50 nm | — |
Thickness | 10–900 nm | — |
Thickness | 10–700 nm | — |
Thickness | 0.34–5 nm | — |
Voltage | 0.01–1 V | — |
Thickness | 10–12 nm | — |
Thickness | 3–10 µm | — |
Thickness | 3–5 µm | — |
Thickness | ≤ 900 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 2 nm | — |
Duration | ≥ 2 hours | — |
Duration | ≥ 3 hours | — |
Thickness | 30–200 nm | — |
Thickness | 1–25 nm | — |
Thickness | 5–25 nm | — |
Thickness | ≤ 3 um | — |
graphene nanoplatelets
graphene (conductive additive)
silicon
Si
SiC intermetallic
SiC
conductive carbon additive
electroactive particle (general)
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
BET surface area 50-200 m2/g | 50–200 m2/g | nanographitic composite |
Thickness | 0.34–50 nm | — |
Thickness | 10–900 nm | — |
Thickness | 10–700 nm | — |
Thickness | 0.34–5 nm | — |
Voltage | 0.01–1 V | — |
Thickness | 10–12 nm | — |
Thickness | 3–10 µm | — |
Thickness | 3–5 µm | — |
Thickness | ≤ 900 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 2 nm | — |
Duration | ≥ 2 hours | — |
Duration | ≥ 3 hours | — |
Thickness | 30–200 nm | — |
Thickness | 1–25 nm | — |
Thickness | 5–25 nm | — |
Thickness | ≤ 3 um | — |
graphene nanoplatelets
graphene (conductive additive)
silicon
Si
SiC intermetallic
SiC
conductive carbon additive
electroactive particle (general)
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
BET surface area 50-200 m2/g | 50–200 m2/g | nanographitic composite |
Thickness | 0.34–50 nm | — |
Thickness | 10–900 nm | — |
Thickness | 10–700 nm | — |
Thickness | 0.34–5 nm | — |
Voltage | 0.01–1 V | — |
Thickness | 10–12 nm | — |
Thickness | 3–10 µm | — |
Thickness | 3–5 µm | — |
Thickness | ≤ 900 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 2 nm | — |
Duration | ≥ 2 hours | — |
Duration | ≥ 3 hours | — |
Thickness | 30–200 nm | — |
Thickness | 1–25 nm | — |
Thickness | 5–25 nm | — |
Thickness | ≤ 3 um | — |
graphene nanoplatelets
graphene (conductive additive)
silicon
Si
SiC intermetallic
SiC
conductive carbon additive
electroactive particle (general)
FIG. 3 is a high resolution TEM image of the interface between a silicon particle and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 4 is a high resolution TEM image of the interface between a silicon particle 400 and a graphene nanoplatelet layer (scale bar is 1 nm) according to one or …
FIG. 5A. There is a layer with containing both Si and C. [0096] FIG s. 6A-6C investigate the composition of a different interface region between the silicon …
FIG. 7 is a TEM photomicrograph of graphitic nanocomposite according to one or more embodiments (scale bar is 100 nm). The silicon particle 700 has a graphene …
FIG. 8 is a transmission electron microscopy (TEM) image of a cluster of silicon particles coated with a large number of graphene nanoplatelets according to …
FIG. 9. The precursor materials include an electroactive particle such as silicon, graphite and optional additives. The graphite can be conventional or natural …
FIG. 12 is a plot of capacity vs. cycle number, demonstrating the capacity and cycle performance of Si/graphene anode; tested in coin cell vs. Li counter …
FIG. 13 is a plot of capacity vs. cycle number, demonstrating the cycle performance of a full cell consisting of NCA cathode, SiCG-B/graphite anode, and 1 M …
BET surface area 50-200 m2/g | 50–200 m2/g | nanographitic composite |
Thickness | 0.34–50 nm | — |
Thickness | 10–900 nm | — |
Thickness | 10–700 nm | — |
Thickness | 0.34–5 nm | — |
Voltage | 0.01–1 V | — |
Thickness | 10–12 nm | — |
Thickness | 3–10 µm | — |
Thickness | 3–5 µm | — |
Thickness | ≤ 900 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≤ 2 nm | — |
Duration | ≥ 2 hours | — |
Duration | ≥ 3 hours | — |
Thickness | 30–200 nm | — |
Thickness | 1–25 nm | — |
Thickness | 5–25 nm | — |
Thickness | ≤ 3 um | — |