Patent
US 10,439,213NITROGEN-DOPED GRAPHENE COATED NANO SULFUR POSITIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD, AND APPLICATION THEREOF
Yuegang ZHANG
US
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Patent
US 10,439,213Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 is a schematic view of an embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material. [0027]
FIG.2 is a stereoscan photograph of a first embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material 1. [0028]
FIG.3 is a chart of an electrochemical performance test of the fi rst embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG.4 is a chart of a charge and discharge capacity of the first embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG. 5 is a chart of an electrochemical performance test of the second embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode …
FIG. 6i s a chart of an electrochemical performance test of the third embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of formin q a nitro q en-doped c raphene coated nano-sulfur positive electrode composite material, comprising: SVG 15317405.07-12-2019.JY₅WNSE₅LXEAPX5.CLM.1.svg 0.15 6 Black and white nitrogen-doped c raphene la y ers to form an effective three-dimensional conductive network; and formin q the nitro q en-doped c raphene coated nano-sulfur positive electrode composite material by evenly coating nano sulfur particles bywith the overlapped nitrogen-doped graphene layer. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a nitrogen content of the nitrogen-doped graphene is 2 -10 wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a conductivity of the nitrogen-doped graphene is 1000-30000S/m. Currently amended
The method of formin q the nitro g en-doped g raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a sulfur content of the composite material is-85wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a grain size of the nano sulfur particle is 10-50 nm. Currently amended
The method of formin q the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a discharge capacity of the nitrogen-doped graphene coated nano sulfur positive electrode composite material reaches to 1200 mAh.g-1 or more at 0.2 C rate, 1000 mAh.g-1 or more at 1 C rate, 800 mAh.g-1 or more at 2 C rate, and 600 mAh.g-1 or more at 5 C rate, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
The method of formin g the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a capacity decay rate of each cycle of the nitrogen-doped graphene coated nano sulfur positive electrode composite material is below 0.028% under 2 C rate and within 2000 cycles, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
AThe method of formin g the nitrogen- doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein: the overlapping nitro g en-doped graphene la y ers is dispersing nitrogen-doped graphenes in a liquid-phase reaction system comprising at least sulfur source and acid; and wherein the formin g the nitro g en-doped graphene coated nanosulfur positive electrode composite material is depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the nitrogen-doped graphene coated nano sulfur positive electrode composite material. Currently amended
A lithium sulfur battery, comprising a positive electrode, a negative electrode, and electrolyte, wherein the positive electrode comprises athe nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1. Currently amended
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
lithium sulfur battery
Materials described outside the worked examples.
nitrogen-doped graphene
nano sulfur particles
S
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Nitrogen Content | 2–10 wt% | nitrogen-doped graphene |
Electrical Conductivity | 1000–30000 S/m |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,439,213Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 is a schematic view of an embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material. [0027]
FIG.2 is a stereoscan photograph of a first embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material 1. [0028]
FIG.3 is a chart of an electrochemical performance test of the fi rst embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG.4 is a chart of a charge and discharge capacity of the first embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG. 5 is a chart of an electrochemical performance test of the second embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode …
FIG. 6i s a chart of an electrochemical performance test of the third embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of formin q a nitro q en-doped c raphene coated nano-sulfur positive electrode composite material, comprising: SVG 15317405.07-12-2019.JY₅WNSE₅LXEAPX5.CLM.1.svg 0.15 6 Black and white nitrogen-doped c raphene la y ers to form an effective three-dimensional conductive network; and formin q the nitro q en-doped c raphene coated nano-sulfur positive electrode composite material by evenly coating nano sulfur particles bywith the overlapped nitrogen-doped graphene layer. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a nitrogen content of the nitrogen-doped graphene is 2 -10 wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a conductivity of the nitrogen-doped graphene is 1000-30000S/m. Currently amended
The method of formin q the nitro g en-doped g raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a sulfur content of the composite material is-85wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a grain size of the nano sulfur particle is 10-50 nm. Currently amended
The method of formin q the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a discharge capacity of the nitrogen-doped graphene coated nano sulfur positive electrode composite material reaches to 1200 mAh.g-1 or more at 0.2 C rate, 1000 mAh.g-1 or more at 1 C rate, 800 mAh.g-1 or more at 2 C rate, and 600 mAh.g-1 or more at 5 C rate, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
The method of formin g the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a capacity decay rate of each cycle of the nitrogen-doped graphene coated nano sulfur positive electrode composite material is below 0.028% under 2 C rate and within 2000 cycles, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
AThe method of formin g the nitrogen- doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein: the overlapping nitro g en-doped graphene la y ers is dispersing nitrogen-doped graphenes in a liquid-phase reaction system comprising at least sulfur source and acid; and wherein the formin g the nitro g en-doped graphene coated nanosulfur positive electrode composite material is depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the nitrogen-doped graphene coated nano sulfur positive electrode composite material. Currently amended
A lithium sulfur battery, comprising a positive electrode, a negative electrode, and electrolyte, wherein the positive electrode comprises athe nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1. Currently amended
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
lithium sulfur battery
Materials described outside the worked examples.
nitrogen-doped graphene
nano sulfur particles
S
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Nitrogen Content | 2–10 wt% | nitrogen-doped graphene |
Electrical Conductivity | 1000–30000 S/m |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,439,213Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 is a schematic view of an embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material. [0027]
FIG.2 is a stereoscan photograph of a first embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material 1. [0028]
FIG.3 is a chart of an electrochemical performance test of the fi rst embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG.4 is a chart of a charge and discharge capacity of the first embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG. 5 is a chart of an electrochemical performance test of the second embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode …
FIG. 6i s a chart of an electrochemical performance test of the third embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of formin q a nitro q en-doped c raphene coated nano-sulfur positive electrode composite material, comprising: SVG 15317405.07-12-2019.JY₅WNSE₅LXEAPX5.CLM.1.svg 0.15 6 Black and white nitrogen-doped c raphene la y ers to form an effective three-dimensional conductive network; and formin q the nitro q en-doped c raphene coated nano-sulfur positive electrode composite material by evenly coating nano sulfur particles bywith the overlapped nitrogen-doped graphene layer. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a nitrogen content of the nitrogen-doped graphene is 2 -10 wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a conductivity of the nitrogen-doped graphene is 1000-30000S/m. Currently amended
The method of formin q the nitro g en-doped g raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a sulfur content of the composite material is-85wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a grain size of the nano sulfur particle is 10-50 nm. Currently amended
The method of formin q the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a discharge capacity of the nitrogen-doped graphene coated nano sulfur positive electrode composite material reaches to 1200 mAh.g-1 or more at 0.2 C rate, 1000 mAh.g-1 or more at 1 C rate, 800 mAh.g-1 or more at 2 C rate, and 600 mAh.g-1 or more at 5 C rate, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
The method of formin g the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a capacity decay rate of each cycle of the nitrogen-doped graphene coated nano sulfur positive electrode composite material is below 0.028% under 2 C rate and within 2000 cycles, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
AThe method of formin g the nitrogen- doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein: the overlapping nitro g en-doped graphene la y ers is dispersing nitrogen-doped graphenes in a liquid-phase reaction system comprising at least sulfur source and acid; and wherein the formin g the nitro g en-doped graphene coated nanosulfur positive electrode composite material is depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the nitrogen-doped graphene coated nano sulfur positive electrode composite material. Currently amended
A lithium sulfur battery, comprising a positive electrode, a negative electrode, and electrolyte, wherein the positive electrode comprises athe nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1. Currently amended
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
lithium sulfur battery
Materials described outside the worked examples.
nitrogen-doped graphene
nano sulfur particles
S
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Nitrogen Content | 2–10 wt% | nitrogen-doped graphene |
Electrical Conductivity | 1000–30000 S/m |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,439,213Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG.1 is a schematic view of an embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material. [0027]
FIG.2 is a stereoscan photograph of a first embodiment of a nitrogen-doped graphene coated nanosulfur positive electrode composite material 1. [0028]
FIG.3 is a chart of an electrochemical performance test of the fi rst embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG.4 is a chart of a charge and discharge capacity of the first embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
FIG. 5 is a chart of an electrochemical performance test of the second embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode …
FIG. 6i s a chart of an electrochemical performance test of the third embodiment of the nitrogen-doped graphene coated nano sulfur positive electrode composite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of formin q a nitro q en-doped c raphene coated nano-sulfur positive electrode composite material, comprising: SVG 15317405.07-12-2019.JY₅WNSE₅LXEAPX5.CLM.1.svg 0.15 6 Black and white nitrogen-doped c raphene la y ers to form an effective three-dimensional conductive network; and formin q the nitro q en-doped c raphene coated nano-sulfur positive electrode composite material by evenly coating nano sulfur particles bywith the overlapped nitrogen-doped graphene layer. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a nitrogen content of the nitrogen-doped graphene is 2 -10 wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a conductivity of the nitrogen-doped graphene is 1000-30000S/m. Currently amended
The method of formin q the nitro g en-doped g raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a sulfur content of the composite material is-85wt%. Currently amended
The method of formin q the nitro q en-doped c raphene coated nano sulfur positive electrode composite material according to claim 1, wherein a grain size of the nano sulfur particle is 10-50 nm. Currently amended
The method of formin q the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a discharge capacity of the nitrogen-doped graphene coated nano sulfur positive electrode composite material reaches to 1200 mAh.g-1 or more at 0.2 C rate, 1000 mAh.g-1 or more at 1 C rate, 800 mAh.g-1 or more at 2 C rate, and 600 mAh.g-1 or more at 5 C rate, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
The method of formin g the nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein a capacity decay rate of each cycle of the nitrogen-doped graphene coated nano sulfur positive electrode composite material is below 0.028% under 2 C rate and within 2000 cycles, when the nitrogen-doped graphene coated nano sulfur positive electrode composite material is used as an positive electrode material of a lithium sulfur battery. Currently amended
AThe method of formin g the nitrogen- doped graphene coated nano sulfur positive electrode composite material according to claim 1, wherein: the overlapping nitro g en-doped graphene la y ers is dispersing nitrogen-doped graphenes in a liquid-phase reaction system comprising at least sulfur source and acid; and wherein the formin g the nitro g en-doped graphene coated nanosulfur positive electrode composite material is depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the nitrogen-doped graphene coated nano sulfur positive electrode composite material. Currently amended
A lithium sulfur battery, comprising a positive electrode, a negative electrode, and electrolyte, wherein the positive electrode comprises athe nitrogen-doped graphene coated nano sulfur positive electrode composite material according to claim 1. Currently amended
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
lithium sulfur battery
Materials described outside the worked examples.
nitrogen-doped graphene
nano sulfur particles
S
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Nitrogen Content | 2–10 wt% | nitrogen-doped graphene |
Electrical Conductivity | 1000–30000 S/m |
Related documents with shared materials, methods, properties, or citations.
nitrogen-doped graphene coated nano sulfur positive electrode composite material
graphene oxide powder
nitrogen-source gas
protective gas (argon or nitrogen)
sulfur source (metal salt containing sulfur)
acid
Sulfur Content | 40–85 wt% | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Grain Size | 10–50 nm | S |
Discharge Capacity | ≥ 1200 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 1000 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 800 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 600 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Capacity Decay Rate Per Cycle | ≤ 0.028 %/cycle | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Thickness | 0–50 nm | — |
Thickness | 20–50 nm | — |
Temperature | ≤ 80 °C | — |
Thickness | ≤ 50 nm | — |
nitrogen-doped graphene coated nano sulfur positive electrode composite material
graphene oxide powder
nitrogen-source gas
protective gas (argon or nitrogen)
sulfur source (metal salt containing sulfur)
acid
Sulfur Content | 40–85 wt% | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Grain Size | 10–50 nm | S |
Discharge Capacity | ≥ 1200 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 1000 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 800 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 600 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Capacity Decay Rate Per Cycle | ≤ 0.028 %/cycle | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Thickness | 0–50 nm | — |
Thickness | 20–50 nm | — |
Temperature | ≤ 80 °C | — |
Thickness | ≤ 50 nm | — |
nitrogen-doped graphene coated nano sulfur positive electrode composite material
graphene oxide powder
nitrogen-source gas
protective gas (argon or nitrogen)
sulfur source (metal salt containing sulfur)
acid
Sulfur Content | 40–85 wt% | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Grain Size | 10–50 nm | S |
Discharge Capacity | ≥ 1200 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 1000 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 800 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 600 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Capacity Decay Rate Per Cycle | ≤ 0.028 %/cycle | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Thickness | 0–50 nm | — |
Thickness | 20–50 nm | — |
Temperature | ≤ 80 °C | — |
Thickness | ≤ 50 nm | — |
nitrogen-doped graphene coated nano sulfur positive electrode composite material
graphene oxide powder
nitrogen-source gas
protective gas (argon or nitrogen)
sulfur source (metal salt containing sulfur)
acid
Sulfur Content | 40–85 wt% | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Grain Size | 10–50 nm | S |
Discharge Capacity | ≥ 1200 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 1000 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 800 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Discharge Capacity | ≥ 600 mAh/g | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Capacity Decay Rate Per Cycle | ≤ 0.028 %/cycle | nitrogen-doped graphene coated nano sulfur positive electrode composite material |
Thickness | 0–50 nm | — |
Thickness | 20–50 nm | — |
Temperature | ≤ 80 °C | — |
Thickness | ≤ 50 nm | — |