Patent
US 11,018,336MULTI-LEVEL GRAPHENE-PROTECTED ANODE ACTIVE MATERIAL PARTICLES FOR FAST-CHARGING LITHIUM-ION BATTERIES
Aruna Zhamu
US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used prior art process of producing highly oxidized graphene sheets (or nano graphene platelets, NGPs) that …
FIG. 2 A diagram showing the presently invented process for producing graphene-embraced or graphene-encapsulated electrode active material particles via an …
FIG. 3 A diagram showing the presently invented process for producing graphene-embraced SVG 16001244.06-06-2018.JI₃FYV₉ZRXEAPX5.SPEC.29.1.2174.191.2249.236.svg …
FIG. 4 Charge-discharge cycling behaviors of 3 lithium cells featuring Co 3 O 4 particle-based anodes: a) containing un-protected Co 3 O 4 particles, b) …
FIG. 5 Charge-discharge cycling behaviors of 3 lithium cells featuring SnO 2 particle-based anodes: the first containing un-protected SnO 2 particles, second …
FIG. 6 Charge-discharge cycling behaviors of 3 lithium cells featuring micron-scaled (3 pm) Si particle-based anodes: a) containing un-protected Si particles, …
FIG. 7 Discharge capacity values (mAh/g, based on composite weight) of 3 lithium cells featuring lithium iron phosphate (LFP) particle-based cathodes, plotted …
FIG. 8 Charge-discharge cycling behaviors of 3 lithium cells featuring LiV 2 O 5 nanorod-based cathodes: a) containing RGO-embraced particulates of …
FIG. 9(B) SEM image of a representative cathode particulate.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a plurality of graphene- encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said plurality of graphene-encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a sulfonate or sulfonyl-containing group, a phosphate, or a -NH 2 -containing group. Currently amended
The particulate of claim 1, wherein said redox pair with lithium is selected from lithium 4-methylbenzenesulfonate, lithium 3,5-dicarboxybenzenesulfonate, lithium 2,6- dimethylbenzene- 1,4-disulfonate, 3,3'-((1,2-dithiane-4,5-diyl)bis(oxy))bis(N- hydroxypropanamide), 3,3'-((4-mercapto- 1,2-phenylene)bis(oxy))bis(N- hydroxypropanamide), lithium aniline sulfonate, poly(lithium⁻⁴-styrenesulfonate, lithium sulfate, lithium phosphate, lithium phosphate monobasic, lithium trifluoromethanesulfonate, lithium 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctane- 1 -sulfonate, lithium 2,6-di- tert-butylbenzene- 1,4-disulfonate, lithium aniline sulfonate (wherein the sulfonate may be in any of para, meta and ortho positions), poly(lithium⁻⁴-styrenesulfonate, a lithiated sulfonated polymer, or a combination thereof. Original
The particulate of claim 1, wherein said particulate is spherical or ellipsoidal in shape. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material comprises single-layer graphene or few-layer graphene, wherein said few- layer graphene is defined as a graphene sheet or platelet formed of 2-10 graphene planes. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material is selected from the group consisting of pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, and combinations thereof. Original
The particulate of claim 1, wherein said first graphene material is different than said second graphene material. Original
The particulate of claim 1, wherein said first graphene material comprises pristine graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof. Original
The particulate of claim 1, wherein said first graphene material comprises a first chemically functionalized graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, a second chemically functionalized graphene, and combinations thereof, wherein said first chemically functionalized graphene is different than the second chemically functionalized graphene. Original
The particulate of claim 1, wherein said anode active material comprises an element selected from the group consisting of Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys thereof, and combinations thereof. Original
The particulate of claim 1, wherein said anode active material is selected from the group consisting of: a. lithiated and un-lithiated silicon (Si), germanium (Ge), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), aluminum (Al), titanium (Ti), nickel (Ni), cobalt (Co), and cadmium (Cd); b. lithiated and un-lithiated alloys or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Ni, Co, or Cd with other elements; c. lithiated and un-lithiated oxides, carbides, nitrides, sulfides, phosphides, selenides, and tellurides of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Fe, Ni, Co, Mn, V, or Cd, and their mixtures, composites, or lithium-containing composites; d. lithiated and un-lithiated salts and hydroxides of Sn; e. lithium titanate, lithium manganate, lithium aluminate, lithium-containing titanium oxide, lithium transition metal oxide; and combinations thereof. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 1 pm. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 100 nm. Original
The particulate of claim 1, wherein said conductive additive is selected from amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, carbon nanotube, carbon nanofiber, carbon fiber, graphite fiber, pitch, coke, carbon black, acetylene black, activated carbon, pitch-derived soft carbon (graphitizable carbon), pitch-derived hard carbon (nongraphitizable carbon), natural graphite particle, artificial graphite particle, electron-conducting polymer, lithium ion-conducting polymer, or a combination thereof, wherein said conductive additive is in electronic contact with said graphene-encapsulated primary particle. Original
The particulate of claim 1, wherein said primary particles of anode active material are selected from lithiated titanium dioxide, lithiated titanium oxide, lithium titanate, or Li 4 Ti 5 O I2. Original
The particulate of claim 1 wherein said primary particles of anode active material are selected from natural graphite, artificial graphite, mesocarbon microbead (MCMB), graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, carbon or graphite fiber segments, carbon nanofiber or graphitic nanofiber, carbon nanotube, or a combination thereof. Original
A mass of multiple particulates as defined in claim 1. Original
A lithium battery anode electrode comprising a mass of multiple particulates of claim 1 and optional conductive filler and binder. Original
A battery electrode comprising said graphene-embraced particulates as defined in claim 1 as an anode active material, wherein said battery is a lithium-ion battery, lithium metal secondary battery, lithium-sulfur battery, lithium-air battery, lithium-selenium battery, sodium-ion battery, sodium metal secondary battery, sodium-sulfur battery, sodium-air battery, magnesium-ion battery, magnesium metal battery, aluminum-ion battery, aluminum metal secondary battery, zinc-ion battery, zinc metal battery, or zinc-air battery. Original
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a single or a plurality of graphene-encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said single or a plurality of graphene- encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a phosphate, or a -NH 2 -containing group. New
Layer stacks claimed or described, ordered top of device to substrate.
graphene-embraced particulate for lithium-ion battery anode
lithium battery anode electrode
lithium battery
Materials described outside the worked examples.
first graphene material
second graphene material
anode active material primary particle
redox pair chemical species (sulfonate or sulfonyl-containing group, phosphate, or -NH₂-containing group)
lithiated sulfonated redox species (e.g. lithium 4-methylbenzenesulfonate, lithium sulfate, lithium phosphate, lithium trifluoromethanesulfonate, etc.)
sulfonated conducting polymer (sulfonated polyaniline, sulfonated polypyrrole, sulfonated polythiophene, sulfonated polyfuran, sulfonated bi-cyclic polymer)
sulfonated elastomeric polymer (sulfonated natural/synthetic polyisoprene, sulfonated polybutadiene, sulfonated SBR, sulfonated polyurethane, etc.)
sulfonated fluoropolymer or sulfonated engineering polymer (poly(perfluoro sulfonic acid), sulfonated PTFE, sulfonated polysulfone, sulfonated PEEK, sulfonated polystyrene, sulfonated polyimide, polybenzimidazole, etc.)
anode active material comprising Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys, oxides, carbides, nitrides, sulfides, phosphides, selenides, tellurides thereof, or lithium titanate
conductive additive (amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, CNT, carbon nanofiber, carbon black, acetylene black, natural/artificial graphite, etc.)
lithium titanate/lithiated titanium oxide (Li₄Ti₅O₁₂)
Li₄Ti₅O₁₂
carbon-based anode active material (natural graphite, artificial graphite, MCMB, graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, CNT, carbon nanofiber)
cathode active material (graphene-encapsulated)
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 9(B) SEM image of a representative cathode particulate.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 600–3600 s | — |
Thickness | 20–200 nm | — |
Duration | 0.5–4 hours | — |
Duration | 5–120 hours | — |
Temperature | 800–1100 °C | — |
Temperature | 950–1050 °C | — |
Duration | 0.5–2 hours | — |
Thickness | 30–55 nm | — |
Duration | ≤ 1 hour | — |
Duration | ≤ 2 hours | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 200 nm | — |
Thickness | 10–100 nm | — |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE-ENCAPSULATED ELECTROACTIVE MATERIAL FOR USE IN A LITHIUM ION ELECTROCHEMICAL CELL
Multi-Level Graphene-Protected Anode Active Material Particles for Battery Applications
Conductive Polymer Binder for a Novel Silicon/Graphene Anode in Lithium Ion Batteries
POROUS PARTICLES OF INTERCONNECTED 3D GRAPHENE AS A SUPERCAPACITOR ELECTRODE ACTIVE MATERIAL AND PRODUCTION PROCESS
PROCESS FOR PRODUCING METAL NANOWIRES AND NANOWIRE-GRAPHENE HYBRID PARTICULATES
METHOD OF PRODUCING GRAPHENE-CARBON HYBRID FOAM-PROTECTED ANODE ACTIVE MATERIAL COATING FOR LITHIUM-ION BATTERIES
GRAPHENE-PROTECTED LEAD ACID BATTERIES
POROUS GRAPHENE NETWORK ELECTRODES AND AN ALL-CARBON LITHIUM ION BATTERY CONTAINING THE SAME
Graphene-Enhanced cathode materials for lithium batteries
ANODE MATERIAL OF NANO-SILICON HAVING MULTILAYER-GRAPHENE AS CARRIER AND COATED WITH SILICON SUBOXIDE AND WITH AMORPHOUS CARBON LAYER AND METHOD FOR FABRICATING THE SAME
METHOD FOR MANUFACTURING GRAPHENE-COATED OBJECT, NEGATIVE ELECTRODE OF SECONDARY BATTERY INCLUDING GRAPHENE-COATED OBJECT, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
Large-grain graphene thin film current collector and secondary batteries containing same
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used prior art process of producing highly oxidized graphene sheets (or nano graphene platelets, NGPs) that …
FIG. 2 A diagram showing the presently invented process for producing graphene-embraced or graphene-encapsulated electrode active material particles via an …
FIG. 3 A diagram showing the presently invented process for producing graphene-embraced SVG 16001244.06-06-2018.JI₃FYV₉ZRXEAPX5.SPEC.29.1.2174.191.2249.236.svg …
FIG. 4 Charge-discharge cycling behaviors of 3 lithium cells featuring Co 3 O 4 particle-based anodes: a) containing un-protected Co 3 O 4 particles, b) …
FIG. 5 Charge-discharge cycling behaviors of 3 lithium cells featuring SnO 2 particle-based anodes: the first containing un-protected SnO 2 particles, second …
FIG. 6 Charge-discharge cycling behaviors of 3 lithium cells featuring micron-scaled (3 pm) Si particle-based anodes: a) containing un-protected Si particles, …
FIG. 7 Discharge capacity values (mAh/g, based on composite weight) of 3 lithium cells featuring lithium iron phosphate (LFP) particle-based cathodes, plotted …
FIG. 8 Charge-discharge cycling behaviors of 3 lithium cells featuring LiV 2 O 5 nanorod-based cathodes: a) containing RGO-embraced particulates of …
FIG. 9(B) SEM image of a representative cathode particulate.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a plurality of graphene- encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said plurality of graphene-encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a sulfonate or sulfonyl-containing group, a phosphate, or a -NH 2 -containing group. Currently amended
The particulate of claim 1, wherein said redox pair with lithium is selected from lithium 4-methylbenzenesulfonate, lithium 3,5-dicarboxybenzenesulfonate, lithium 2,6- dimethylbenzene- 1,4-disulfonate, 3,3'-((1,2-dithiane-4,5-diyl)bis(oxy))bis(N- hydroxypropanamide), 3,3'-((4-mercapto- 1,2-phenylene)bis(oxy))bis(N- hydroxypropanamide), lithium aniline sulfonate, poly(lithium⁻⁴-styrenesulfonate, lithium sulfate, lithium phosphate, lithium phosphate monobasic, lithium trifluoromethanesulfonate, lithium 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctane- 1 -sulfonate, lithium 2,6-di- tert-butylbenzene- 1,4-disulfonate, lithium aniline sulfonate (wherein the sulfonate may be in any of para, meta and ortho positions), poly(lithium⁻⁴-styrenesulfonate, a lithiated sulfonated polymer, or a combination thereof. Original
The particulate of claim 1, wherein said particulate is spherical or ellipsoidal in shape. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material comprises single-layer graphene or few-layer graphene, wherein said few- layer graphene is defined as a graphene sheet or platelet formed of 2-10 graphene planes. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material is selected from the group consisting of pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, and combinations thereof. Original
The particulate of claim 1, wherein said first graphene material is different than said second graphene material. Original
The particulate of claim 1, wherein said first graphene material comprises pristine graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof. Original
The particulate of claim 1, wherein said first graphene material comprises a first chemically functionalized graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, a second chemically functionalized graphene, and combinations thereof, wherein said first chemically functionalized graphene is different than the second chemically functionalized graphene. Original
The particulate of claim 1, wherein said anode active material comprises an element selected from the group consisting of Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys thereof, and combinations thereof. Original
The particulate of claim 1, wherein said anode active material is selected from the group consisting of: a. lithiated and un-lithiated silicon (Si), germanium (Ge), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), aluminum (Al), titanium (Ti), nickel (Ni), cobalt (Co), and cadmium (Cd); b. lithiated and un-lithiated alloys or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Ni, Co, or Cd with other elements; c. lithiated and un-lithiated oxides, carbides, nitrides, sulfides, phosphides, selenides, and tellurides of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Fe, Ni, Co, Mn, V, or Cd, and their mixtures, composites, or lithium-containing composites; d. lithiated and un-lithiated salts and hydroxides of Sn; e. lithium titanate, lithium manganate, lithium aluminate, lithium-containing titanium oxide, lithium transition metal oxide; and combinations thereof. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 1 pm. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 100 nm. Original
The particulate of claim 1, wherein said conductive additive is selected from amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, carbon nanotube, carbon nanofiber, carbon fiber, graphite fiber, pitch, coke, carbon black, acetylene black, activated carbon, pitch-derived soft carbon (graphitizable carbon), pitch-derived hard carbon (nongraphitizable carbon), natural graphite particle, artificial graphite particle, electron-conducting polymer, lithium ion-conducting polymer, or a combination thereof, wherein said conductive additive is in electronic contact with said graphene-encapsulated primary particle. Original
The particulate of claim 1, wherein said primary particles of anode active material are selected from lithiated titanium dioxide, lithiated titanium oxide, lithium titanate, or Li 4 Ti 5 O I2. Original
The particulate of claim 1 wherein said primary particles of anode active material are selected from natural graphite, artificial graphite, mesocarbon microbead (MCMB), graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, carbon or graphite fiber segments, carbon nanofiber or graphitic nanofiber, carbon nanotube, or a combination thereof. Original
A mass of multiple particulates as defined in claim 1. Original
A lithium battery anode electrode comprising a mass of multiple particulates of claim 1 and optional conductive filler and binder. Original
A battery electrode comprising said graphene-embraced particulates as defined in claim 1 as an anode active material, wherein said battery is a lithium-ion battery, lithium metal secondary battery, lithium-sulfur battery, lithium-air battery, lithium-selenium battery, sodium-ion battery, sodium metal secondary battery, sodium-sulfur battery, sodium-air battery, magnesium-ion battery, magnesium metal battery, aluminum-ion battery, aluminum metal secondary battery, zinc-ion battery, zinc metal battery, or zinc-air battery. Original
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a single or a plurality of graphene-encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said single or a plurality of graphene- encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a phosphate, or a -NH 2 -containing group. New
Layer stacks claimed or described, ordered top of device to substrate.
graphene-embraced particulate for lithium-ion battery anode
lithium battery anode electrode
lithium battery
Materials described outside the worked examples.
first graphene material
second graphene material
anode active material primary particle
redox pair chemical species (sulfonate or sulfonyl-containing group, phosphate, or -NH₂-containing group)
lithiated sulfonated redox species (e.g. lithium 4-methylbenzenesulfonate, lithium sulfate, lithium phosphate, lithium trifluoromethanesulfonate, etc.)
sulfonated conducting polymer (sulfonated polyaniline, sulfonated polypyrrole, sulfonated polythiophene, sulfonated polyfuran, sulfonated bi-cyclic polymer)
sulfonated elastomeric polymer (sulfonated natural/synthetic polyisoprene, sulfonated polybutadiene, sulfonated SBR, sulfonated polyurethane, etc.)
sulfonated fluoropolymer or sulfonated engineering polymer (poly(perfluoro sulfonic acid), sulfonated PTFE, sulfonated polysulfone, sulfonated PEEK, sulfonated polystyrene, sulfonated polyimide, polybenzimidazole, etc.)
anode active material comprising Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys, oxides, carbides, nitrides, sulfides, phosphides, selenides, tellurides thereof, or lithium titanate
conductive additive (amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, CNT, carbon nanofiber, carbon black, acetylene black, natural/artificial graphite, etc.)
lithium titanate/lithiated titanium oxide (Li₄Ti₅O₁₂)
Li₄Ti₅O₁₂
carbon-based anode active material (natural graphite, artificial graphite, MCMB, graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, CNT, carbon nanofiber)
cathode active material (graphene-encapsulated)
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 9(B) SEM image of a representative cathode particulate.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 600–3600 s | — |
Thickness | 20–200 nm | — |
Duration | 0.5–4 hours | — |
Duration | 5–120 hours | — |
Temperature | 800–1100 °C | — |
Temperature | 950–1050 °C | — |
Duration | 0.5–2 hours | — |
Thickness | 30–55 nm | — |
Duration | ≤ 1 hour | — |
Duration | ≤ 2 hours | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 200 nm | — |
Thickness | 10–100 nm | — |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE-ENCAPSULATED ELECTROACTIVE MATERIAL FOR USE IN A LITHIUM ION ELECTROCHEMICAL CELL
Multi-Level Graphene-Protected Anode Active Material Particles for Battery Applications
Conductive Polymer Binder for a Novel Silicon/Graphene Anode in Lithium Ion Batteries
POROUS PARTICLES OF INTERCONNECTED 3D GRAPHENE AS A SUPERCAPACITOR ELECTRODE ACTIVE MATERIAL AND PRODUCTION PROCESS
PROCESS FOR PRODUCING METAL NANOWIRES AND NANOWIRE-GRAPHENE HYBRID PARTICULATES
METHOD OF PRODUCING GRAPHENE-CARBON HYBRID FOAM-PROTECTED ANODE ACTIVE MATERIAL COATING FOR LITHIUM-ION BATTERIES
GRAPHENE-PROTECTED LEAD ACID BATTERIES
POROUS GRAPHENE NETWORK ELECTRODES AND AN ALL-CARBON LITHIUM ION BATTERY CONTAINING THE SAME
Graphene-Enhanced cathode materials for lithium batteries
ANODE MATERIAL OF NANO-SILICON HAVING MULTILAYER-GRAPHENE AS CARRIER AND COATED WITH SILICON SUBOXIDE AND WITH AMORPHOUS CARBON LAYER AND METHOD FOR FABRICATING THE SAME
METHOD FOR MANUFACTURING GRAPHENE-COATED OBJECT, NEGATIVE ELECTRODE OF SECONDARY BATTERY INCLUDING GRAPHENE-COATED OBJECT, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
Large-grain graphene thin film current collector and secondary batteries containing same
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used prior art process of producing highly oxidized graphene sheets (or nano graphene platelets, NGPs) that …
FIG. 2 A diagram showing the presently invented process for producing graphene-embraced or graphene-encapsulated electrode active material particles via an …
FIG. 3 A diagram showing the presently invented process for producing graphene-embraced SVG 16001244.06-06-2018.JI₃FYV₉ZRXEAPX5.SPEC.29.1.2174.191.2249.236.svg …
FIG. 4 Charge-discharge cycling behaviors of 3 lithium cells featuring Co 3 O 4 particle-based anodes: a) containing un-protected Co 3 O 4 particles, b) …
FIG. 5 Charge-discharge cycling behaviors of 3 lithium cells featuring SnO 2 particle-based anodes: the first containing un-protected SnO 2 particles, second …
FIG. 6 Charge-discharge cycling behaviors of 3 lithium cells featuring micron-scaled (3 pm) Si particle-based anodes: a) containing un-protected Si particles, …
FIG. 7 Discharge capacity values (mAh/g, based on composite weight) of 3 lithium cells featuring lithium iron phosphate (LFP) particle-based cathodes, plotted …
FIG. 8 Charge-discharge cycling behaviors of 3 lithium cells featuring LiV 2 O 5 nanorod-based cathodes: a) containing RGO-embraced particulates of …
FIG. 9(B) SEM image of a representative cathode particulate.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a plurality of graphene- encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said plurality of graphene-encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a sulfonate or sulfonyl-containing group, a phosphate, or a -NH 2 -containing group. Currently amended
The particulate of claim 1, wherein said redox pair with lithium is selected from lithium 4-methylbenzenesulfonate, lithium 3,5-dicarboxybenzenesulfonate, lithium 2,6- dimethylbenzene- 1,4-disulfonate, 3,3'-((1,2-dithiane-4,5-diyl)bis(oxy))bis(N- hydroxypropanamide), 3,3'-((4-mercapto- 1,2-phenylene)bis(oxy))bis(N- hydroxypropanamide), lithium aniline sulfonate, poly(lithium⁻⁴-styrenesulfonate, lithium sulfate, lithium phosphate, lithium phosphate monobasic, lithium trifluoromethanesulfonate, lithium 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctane- 1 -sulfonate, lithium 2,6-di- tert-butylbenzene- 1,4-disulfonate, lithium aniline sulfonate (wherein the sulfonate may be in any of para, meta and ortho positions), poly(lithium⁻⁴-styrenesulfonate, a lithiated sulfonated polymer, or a combination thereof. Original
The particulate of claim 1, wherein said particulate is spherical or ellipsoidal in shape. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material comprises single-layer graphene or few-layer graphene, wherein said few- layer graphene is defined as a graphene sheet or platelet formed of 2-10 graphene planes. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material is selected from the group consisting of pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, and combinations thereof. Original
The particulate of claim 1, wherein said first graphene material is different than said second graphene material. Original
The particulate of claim 1, wherein said first graphene material comprises pristine graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof. Original
The particulate of claim 1, wherein said first graphene material comprises a first chemically functionalized graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, a second chemically functionalized graphene, and combinations thereof, wherein said first chemically functionalized graphene is different than the second chemically functionalized graphene. Original
The particulate of claim 1, wherein said anode active material comprises an element selected from the group consisting of Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys thereof, and combinations thereof. Original
The particulate of claim 1, wherein said anode active material is selected from the group consisting of: a. lithiated and un-lithiated silicon (Si), germanium (Ge), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), aluminum (Al), titanium (Ti), nickel (Ni), cobalt (Co), and cadmium (Cd); b. lithiated and un-lithiated alloys or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Ni, Co, or Cd with other elements; c. lithiated and un-lithiated oxides, carbides, nitrides, sulfides, phosphides, selenides, and tellurides of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Fe, Ni, Co, Mn, V, or Cd, and their mixtures, composites, or lithium-containing composites; d. lithiated and un-lithiated salts and hydroxides of Sn; e. lithium titanate, lithium manganate, lithium aluminate, lithium-containing titanium oxide, lithium transition metal oxide; and combinations thereof. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 1 pm. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 100 nm. Original
The particulate of claim 1, wherein said conductive additive is selected from amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, carbon nanotube, carbon nanofiber, carbon fiber, graphite fiber, pitch, coke, carbon black, acetylene black, activated carbon, pitch-derived soft carbon (graphitizable carbon), pitch-derived hard carbon (nongraphitizable carbon), natural graphite particle, artificial graphite particle, electron-conducting polymer, lithium ion-conducting polymer, or a combination thereof, wherein said conductive additive is in electronic contact with said graphene-encapsulated primary particle. Original
The particulate of claim 1, wherein said primary particles of anode active material are selected from lithiated titanium dioxide, lithiated titanium oxide, lithium titanate, or Li 4 Ti 5 O I2. Original
The particulate of claim 1 wherein said primary particles of anode active material are selected from natural graphite, artificial graphite, mesocarbon microbead (MCMB), graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, carbon or graphite fiber segments, carbon nanofiber or graphitic nanofiber, carbon nanotube, or a combination thereof. Original
A mass of multiple particulates as defined in claim 1. Original
A lithium battery anode electrode comprising a mass of multiple particulates of claim 1 and optional conductive filler and binder. Original
A battery electrode comprising said graphene-embraced particulates as defined in claim 1 as an anode active material, wherein said battery is a lithium-ion battery, lithium metal secondary battery, lithium-sulfur battery, lithium-air battery, lithium-selenium battery, sodium-ion battery, sodium metal secondary battery, sodium-sulfur battery, sodium-air battery, magnesium-ion battery, magnesium metal battery, aluminum-ion battery, aluminum metal secondary battery, zinc-ion battery, zinc metal battery, or zinc-air battery. Original
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a single or a plurality of graphene-encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said single or a plurality of graphene- encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a phosphate, or a -NH 2 -containing group. New
Layer stacks claimed or described, ordered top of device to substrate.
graphene-embraced particulate for lithium-ion battery anode
lithium battery anode electrode
lithium battery
Materials described outside the worked examples.
first graphene material
second graphene material
anode active material primary particle
redox pair chemical species (sulfonate or sulfonyl-containing group, phosphate, or -NH₂-containing group)
lithiated sulfonated redox species (e.g. lithium 4-methylbenzenesulfonate, lithium sulfate, lithium phosphate, lithium trifluoromethanesulfonate, etc.)
sulfonated conducting polymer (sulfonated polyaniline, sulfonated polypyrrole, sulfonated polythiophene, sulfonated polyfuran, sulfonated bi-cyclic polymer)
sulfonated elastomeric polymer (sulfonated natural/synthetic polyisoprene, sulfonated polybutadiene, sulfonated SBR, sulfonated polyurethane, etc.)
sulfonated fluoropolymer or sulfonated engineering polymer (poly(perfluoro sulfonic acid), sulfonated PTFE, sulfonated polysulfone, sulfonated PEEK, sulfonated polystyrene, sulfonated polyimide, polybenzimidazole, etc.)
anode active material comprising Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys, oxides, carbides, nitrides, sulfides, phosphides, selenides, tellurides thereof, or lithium titanate
conductive additive (amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, CNT, carbon nanofiber, carbon black, acetylene black, natural/artificial graphite, etc.)
lithium titanate/lithiated titanium oxide (Li₄Ti₅O₁₂)
Li₄Ti₅O₁₂
carbon-based anode active material (natural graphite, artificial graphite, MCMB, graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, CNT, carbon nanofiber)
cathode active material (graphene-encapsulated)
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 9(B) SEM image of a representative cathode particulate.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 600–3600 s | — |
Thickness | 20–200 nm | — |
Duration | 0.5–4 hours | — |
Duration | 5–120 hours | — |
Temperature | 800–1100 °C | — |
Temperature | 950–1050 °C | — |
Duration | 0.5–2 hours | — |
Thickness | 30–55 nm | — |
Duration | ≤ 1 hour | — |
Duration | ≤ 2 hours | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 200 nm | — |
Thickness | 10–100 nm | — |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE-ENCAPSULATED ELECTROACTIVE MATERIAL FOR USE IN A LITHIUM ION ELECTROCHEMICAL CELL
Multi-Level Graphene-Protected Anode Active Material Particles for Battery Applications
Conductive Polymer Binder for a Novel Silicon/Graphene Anode in Lithium Ion Batteries
POROUS PARTICLES OF INTERCONNECTED 3D GRAPHENE AS A SUPERCAPACITOR ELECTRODE ACTIVE MATERIAL AND PRODUCTION PROCESS
PROCESS FOR PRODUCING METAL NANOWIRES AND NANOWIRE-GRAPHENE HYBRID PARTICULATES
METHOD OF PRODUCING GRAPHENE-CARBON HYBRID FOAM-PROTECTED ANODE ACTIVE MATERIAL COATING FOR LITHIUM-ION BATTERIES
GRAPHENE-PROTECTED LEAD ACID BATTERIES
POROUS GRAPHENE NETWORK ELECTRODES AND AN ALL-CARBON LITHIUM ION BATTERY CONTAINING THE SAME
Graphene-Enhanced cathode materials for lithium batteries
ANODE MATERIAL OF NANO-SILICON HAVING MULTILAYER-GRAPHENE AS CARRIER AND COATED WITH SILICON SUBOXIDE AND WITH AMORPHOUS CARBON LAYER AND METHOD FOR FABRICATING THE SAME
METHOD FOR MANUFACTURING GRAPHENE-COATED OBJECT, NEGATIVE ELECTRODE OF SECONDARY BATTERY INCLUDING GRAPHENE-COATED OBJECT, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
Large-grain graphene thin film current collector and secondary batteries containing same
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used prior art process of producing highly oxidized graphene sheets (or nano graphene platelets, NGPs) that …
FIG. 2 A diagram showing the presently invented process for producing graphene-embraced or graphene-encapsulated electrode active material particles via an …
FIG. 3 A diagram showing the presently invented process for producing graphene-embraced SVG 16001244.06-06-2018.JI₃FYV₉ZRXEAPX5.SPEC.29.1.2174.191.2249.236.svg …
FIG. 4 Charge-discharge cycling behaviors of 3 lithium cells featuring Co 3 O 4 particle-based anodes: a) containing un-protected Co 3 O 4 particles, b) …
FIG. 5 Charge-discharge cycling behaviors of 3 lithium cells featuring SnO 2 particle-based anodes: the first containing un-protected SnO 2 particles, second …
FIG. 6 Charge-discharge cycling behaviors of 3 lithium cells featuring micron-scaled (3 pm) Si particle-based anodes: a) containing un-protected Si particles, …
FIG. 7 Discharge capacity values (mAh/g, based on composite weight) of 3 lithium cells featuring lithium iron phosphate (LFP) particle-based cathodes, plotted …
FIG. 8 Charge-discharge cycling behaviors of 3 lithium cells featuring LiV 2 O 5 nanorod-based cathodes: a) containing RGO-embraced particulates of …
FIG. 9(B) SEM image of a representative cathode particulate.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a plurality of graphene- encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said plurality of graphene-encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a sulfonate or sulfonyl-containing group, a phosphate, or a -NH 2 -containing group. Currently amended
The particulate of claim 1, wherein said redox pair with lithium is selected from lithium 4-methylbenzenesulfonate, lithium 3,5-dicarboxybenzenesulfonate, lithium 2,6- dimethylbenzene- 1,4-disulfonate, 3,3'-((1,2-dithiane-4,5-diyl)bis(oxy))bis(N- hydroxypropanamide), 3,3'-((4-mercapto- 1,2-phenylene)bis(oxy))bis(N- hydroxypropanamide), lithium aniline sulfonate, poly(lithium⁻⁴-styrenesulfonate, lithium sulfate, lithium phosphate, lithium phosphate monobasic, lithium trifluoromethanesulfonate, lithium 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctane- 1 -sulfonate, lithium 2,6-di- tert-butylbenzene- 1,4-disulfonate, lithium aniline sulfonate (wherein the sulfonate may be in any of para, meta and ortho positions), poly(lithium⁻⁴-styrenesulfonate, a lithiated sulfonated polymer, or a combination thereof. Original
The particulate of claim 1, wherein said particulate is spherical or ellipsoidal in shape. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material comprises single-layer graphene or few-layer graphene, wherein said few- layer graphene is defined as a graphene sheet or platelet formed of 2-10 graphene planes. Original
The particulate of claim 1, wherein said first graphene material or said second graphene material is selected from the group consisting of pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, and combinations thereof. Original
The particulate of claim 1, wherein said first graphene material is different than said second graphene material. Original
The particulate of claim 1, wherein said first graphene material comprises pristine graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof. Original
The particulate of claim 1, wherein said first graphene material comprises a first chemically functionalized graphene and said second graphene material is selected from the group consisting of graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, a second chemically functionalized graphene, and combinations thereof, wherein said first chemically functionalized graphene is different than the second chemically functionalized graphene. Original
The particulate of claim 1, wherein said anode active material comprises an element selected from the group consisting of Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys thereof, and combinations thereof. Original
The particulate of claim 1, wherein said anode active material is selected from the group consisting of: a. lithiated and un-lithiated silicon (Si), germanium (Ge), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), aluminum (Al), titanium (Ti), nickel (Ni), cobalt (Co), and cadmium (Cd); b. lithiated and un-lithiated alloys or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Ni, Co, or Cd with other elements; c. lithiated and un-lithiated oxides, carbides, nitrides, sulfides, phosphides, selenides, and tellurides of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, Fe, Ni, Co, Mn, V, or Cd, and their mixtures, composites, or lithium-containing composites; d. lithiated and un-lithiated salts and hydroxides of Sn; e. lithium titanate, lithium manganate, lithium aluminate, lithium-containing titanium oxide, lithium transition metal oxide; and combinations thereof. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 1 pm. Original
The particulate of claim 1, wherein said primary particles of an anode active material have a size from 10 nm to 100 nm. Original
The particulate of claim 1, wherein said conductive additive is selected from amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, carbon nanotube, carbon nanofiber, carbon fiber, graphite fiber, pitch, coke, carbon black, acetylene black, activated carbon, pitch-derived soft carbon (graphitizable carbon), pitch-derived hard carbon (nongraphitizable carbon), natural graphite particle, artificial graphite particle, electron-conducting polymer, lithium ion-conducting polymer, or a combination thereof, wherein said conductive additive is in electronic contact with said graphene-encapsulated primary particle. Original
The particulate of claim 1, wherein said primary particles of anode active material are selected from lithiated titanium dioxide, lithiated titanium oxide, lithium titanate, or Li 4 Ti 5 O I2. Original
The particulate of claim 1 wherein said primary particles of anode active material are selected from natural graphite, artificial graphite, mesocarbon microbead (MCMB), graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, carbon or graphite fiber segments, carbon nanofiber or graphitic nanofiber, carbon nanotube, or a combination thereof. Original
A mass of multiple particulates as defined in claim 1. Original
A lithium battery anode electrode comprising a mass of multiple particulates of claim 1 and optional conductive filler and binder. Original
A battery electrode comprising said graphene-embraced particulates as defined in claim 1 as an anode active material, wherein said battery is a lithium-ion battery, lithium metal secondary battery, lithium-sulfur battery, lithium-air battery, lithium-selenium battery, sodium-ion battery, sodium metal secondary battery, sodium-sulfur battery, sodium-air battery, magnesium-ion battery, magnesium metal battery, aluminum-ion battery, aluminum metal secondary battery, zinc-ion battery, zinc metal battery, or zinc-air battery. Original
A graphene-embraced particulate for use as a lithium-ion battery anode active material, wherein said particulate comprises a single or a plurality of graphene-encapsulated primary particles of an anode active material, comprising a primary particle of said anode active material and multiple sheets of a first graphene material overlapped together to embrace or encapsulate said primary particle, and wherein said single or a plurality of graphene- encapsulated primary particles, along with an optional conductive additive, are further embraced or encapsulated by multiple sheets of a second graphene material, wherein said first graphene material is the same as or different from said second graphene material, and wherein said first graphene and said second graphene material are each in an amount from 0.01% to 20% by weight and said optional conductive additive is in an amount from 0% to 50% by weight, all based on the total weight of said particulate, and wherein said a surface of the first graphene material or the second graphene material is in physical contact with or bonded to a chemical species forming a redox pair with lithium, selected from a phosphate, or a -NH 2 -containing group. New
Layer stacks claimed or described, ordered top of device to substrate.
graphene-embraced particulate for lithium-ion battery anode
lithium battery anode electrode
lithium battery
Materials described outside the worked examples.
first graphene material
second graphene material
anode active material primary particle
redox pair chemical species (sulfonate or sulfonyl-containing group, phosphate, or -NH₂-containing group)
lithiated sulfonated redox species (e.g. lithium 4-methylbenzenesulfonate, lithium sulfate, lithium phosphate, lithium trifluoromethanesulfonate, etc.)
sulfonated conducting polymer (sulfonated polyaniline, sulfonated polypyrrole, sulfonated polythiophene, sulfonated polyfuran, sulfonated bi-cyclic polymer)
sulfonated elastomeric polymer (sulfonated natural/synthetic polyisoprene, sulfonated polybutadiene, sulfonated SBR, sulfonated polyurethane, etc.)
sulfonated fluoropolymer or sulfonated engineering polymer (poly(perfluoro sulfonic acid), sulfonated PTFE, sulfonated polysulfone, sulfonated PEEK, sulfonated polystyrene, sulfonated polyimide, polybenzimidazole, etc.)
anode active material comprising Si, Ge, Sn, Cd, Sb, Pb, Bi, Zn, Al, Co, Ni, Ti, alloys, oxides, carbides, nitrides, sulfides, phosphides, selenides, tellurides thereof, or lithium titanate
conductive additive (amorphous carbon, CVD carbon, carbonized resin, expanded graphite platelet, CNT, carbon nanofiber, carbon black, acetylene black, natural/artificial graphite, etc.)
lithium titanate/lithiated titanium oxide (Li₄Ti₅O₁₂)
Li₄Ti₅O₁₂
carbon-based anode active material (natural graphite, artificial graphite, MCMB, graphitic coke, mesophase carbon, hard carbon, soft carbon, polymeric carbon, CNT, carbon nanofiber)
cathode active material (graphene-encapsulated)
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 9(B) SEM image of a representative cathode particulate.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 600–3600 s | — |
Thickness | 20–200 nm | — |
Duration | 0.5–4 hours | — |
Duration | 5–120 hours | — |
Temperature | 800–1100 °C | — |
Temperature | 950–1050 °C | — |
Duration | 0.5–2 hours | — |
Thickness | 30–55 nm | — |
Duration | ≤ 1 hour | — |
Duration | ≤ 2 hours | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 200 nm | — |
Thickness | 10–100 nm | — |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE-ENCAPSULATED ELECTROACTIVE MATERIAL FOR USE IN A LITHIUM ION ELECTROCHEMICAL CELL
Multi-Level Graphene-Protected Anode Active Material Particles for Battery Applications
Conductive Polymer Binder for a Novel Silicon/Graphene Anode in Lithium Ion Batteries
POROUS PARTICLES OF INTERCONNECTED 3D GRAPHENE AS A SUPERCAPACITOR ELECTRODE ACTIVE MATERIAL AND PRODUCTION PROCESS
PROCESS FOR PRODUCING METAL NANOWIRES AND NANOWIRE-GRAPHENE HYBRID PARTICULATES
METHOD OF PRODUCING GRAPHENE-CARBON HYBRID FOAM-PROTECTED ANODE ACTIVE MATERIAL COATING FOR LITHIUM-ION BATTERIES
GRAPHENE-PROTECTED LEAD ACID BATTERIES
POROUS GRAPHENE NETWORK ELECTRODES AND AN ALL-CARBON LITHIUM ION BATTERY CONTAINING THE SAME
Graphene-Enhanced cathode materials for lithium batteries
ANODE MATERIAL OF NANO-SILICON HAVING MULTILAYER-GRAPHENE AS CARRIER AND COATED WITH SILICON SUBOXIDE AND WITH AMORPHOUS CARBON LAYER AND METHOD FOR FABRICATING THE SAME
METHOD FOR MANUFACTURING GRAPHENE-COATED OBJECT, NEGATIVE ELECTRODE OF SECONDARY BATTERY INCLUDING GRAPHENE-COATED OBJECT, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE
Large-grain graphene thin film current collector and secondary batteries containing same