Patent
US 10,923,720GRAPHENE-ENABLED SELENIUM CATHODE ACTIVE MATERIAL FOR AN ALKALI METAL-SELENIUM SECONDARY BATTERY
Hui He, Aruna Zhamu, Bor Z. Jang
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,923,720Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 Schematic drawing illustrating the processes for producing conventional paper, mat, film, and membrane of simply aggregated graphite flakes/platelets or …
FIG. 2(A) Schematic of a graphene-enhanced hybrid particulate according to a embodiment of the present invention; and
FIG. 3 The charge and discharge cycling results of three Li-Se cells, one containing a presently invented cathode structure of RGO-wrapped Se particulates, the …
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
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-enabled hybrid particulate for use as a cathode active material of an alkali metal battery wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a plurality of fine selenium particles or coatings, having a diameter or thickness from 0.5 nm to p m, and the graphene sheets and the selenium particles or coatings are mutually bonded or agglomerated into said hybrid particulate containing an exterior graphene sheet or multiple exterior graphene sheets embracing said selenium particles or coatings, and wherein said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 1, wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of non-carbon elements or a non-pristine graphene material having 0.01% to 20% by weight of non-carbon elements, wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof. Original
The hybrid particulate of claim 1, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 1, wherein said selenium coatings or particles have a thickness or diameter from 0.5 nm to 100 nm. Original
The hybrid particulate of claim 1, having a diameter from 100 nm to 100 pm. Original
The hybrid particulate of claim 1, havin g a diameter from 1.0 m to 50 pm. Original
The hybrid particulate of claim 1, having a substantially spherical or ellipsoidal shape. Original
The hybrid particulate of claim 1, wherein said hybrid particulate further contains interior g raphene sheets in physical contact with said selenium particles or coatings and with said exterior graphene sheet. Original
The hybrid particulate of claim 1 wherein the graphene amount is from 0.1 % to 10 % by weight of the total weight of graphene and selenium combined. Original
The hybrid particulate of claim 1 wherein said hybrid particulate has an electrical conductivity greater than 10 4 S/cm. Original
The hybrid particulate of claim 1, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet for m having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 1, further comprising a carbon material in electronic contact with said selenium and a graphene sheet. Original
The hybrid particulate of claim 1, further comprising a carbon material coated on at least one of said selenium particles or coatings, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 1. Original
An alkali metal-selenium battery cathode containing the hybrid particulate of claim 1 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 1. Original
A graphene-enabled hybrid particulate for use as an alkali metal battery cathode active material, wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a single selenium particle, having a diameter or thickness from 0.5 nm to 30 p m, and the graphene sheet or plurality of graphene sheets encapsulate the selenium particle and wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of noncarbon elements or a non-pristine graphene material having 0.01% to 20% by weight of noncarbon elements, wherein said non-pristine graphene is not graphene oxide or reduced graphene oxide and is selected from graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof and wherein said graphene is in an amount of from 0.01 % to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 3, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 3, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet form having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 3, further comprising a carbon material coated on said selenium particle, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 3. Original
(Ori g inal) An alkali metal-selenium battery cathode containing the hybrid particulate of claim 3 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 3. Original
Layer stacks claimed or described, ordered top of device to substrate.
graphene-enabled hybrid particulate
alkali metal-selenium battery cathode
alkali metal-selenium battery
Materials described outside the worked examples.
graphene
selenium
Se
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electrical conductivity of hybrid particulate | ≥ 0.0001 S/cm | graphene |
Thickness | 0.5–100 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,923,720Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 Schematic drawing illustrating the processes for producing conventional paper, mat, film, and membrane of simply aggregated graphite flakes/platelets or …
FIG. 2(A) Schematic of a graphene-enhanced hybrid particulate according to a embodiment of the present invention; and
FIG. 3 The charge and discharge cycling results of three Li-Se cells, one containing a presently invented cathode structure of RGO-wrapped Se particulates, the …
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
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-enabled hybrid particulate for use as a cathode active material of an alkali metal battery wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a plurality of fine selenium particles or coatings, having a diameter or thickness from 0.5 nm to p m, and the graphene sheets and the selenium particles or coatings are mutually bonded or agglomerated into said hybrid particulate containing an exterior graphene sheet or multiple exterior graphene sheets embracing said selenium particles or coatings, and wherein said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 1, wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of non-carbon elements or a non-pristine graphene material having 0.01% to 20% by weight of non-carbon elements, wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof. Original
The hybrid particulate of claim 1, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 1, wherein said selenium coatings or particles have a thickness or diameter from 0.5 nm to 100 nm. Original
The hybrid particulate of claim 1, having a diameter from 100 nm to 100 pm. Original
The hybrid particulate of claim 1, havin g a diameter from 1.0 m to 50 pm. Original
The hybrid particulate of claim 1, having a substantially spherical or ellipsoidal shape. Original
The hybrid particulate of claim 1, wherein said hybrid particulate further contains interior g raphene sheets in physical contact with said selenium particles or coatings and with said exterior graphene sheet. Original
The hybrid particulate of claim 1 wherein the graphene amount is from 0.1 % to 10 % by weight of the total weight of graphene and selenium combined. Original
The hybrid particulate of claim 1 wherein said hybrid particulate has an electrical conductivity greater than 10 4 S/cm. Original
The hybrid particulate of claim 1, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet for m having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 1, further comprising a carbon material in electronic contact with said selenium and a graphene sheet. Original
The hybrid particulate of claim 1, further comprising a carbon material coated on at least one of said selenium particles or coatings, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 1. Original
An alkali metal-selenium battery cathode containing the hybrid particulate of claim 1 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 1. Original
A graphene-enabled hybrid particulate for use as an alkali metal battery cathode active material, wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a single selenium particle, having a diameter or thickness from 0.5 nm to 30 p m, and the graphene sheet or plurality of graphene sheets encapsulate the selenium particle and wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of noncarbon elements or a non-pristine graphene material having 0.01% to 20% by weight of noncarbon elements, wherein said non-pristine graphene is not graphene oxide or reduced graphene oxide and is selected from graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof and wherein said graphene is in an amount of from 0.01 % to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 3, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 3, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet form having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 3, further comprising a carbon material coated on said selenium particle, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 3. Original
(Ori g inal) An alkali metal-selenium battery cathode containing the hybrid particulate of claim 3 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 3. Original
Layer stacks claimed or described, ordered top of device to substrate.
graphene-enabled hybrid particulate
alkali metal-selenium battery cathode
alkali metal-selenium battery
Materials described outside the worked examples.
graphene
selenium
Se
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electrical conductivity of hybrid particulate | ≥ 0.0001 S/cm | graphene |
Thickness | 0.5–100 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,923,720Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 Schematic drawing illustrating the processes for producing conventional paper, mat, film, and membrane of simply aggregated graphite flakes/platelets or …
FIG. 2(A) Schematic of a graphene-enhanced hybrid particulate according to a embodiment of the present invention; and
FIG. 3 The charge and discharge cycling results of three Li-Se cells, one containing a presently invented cathode structure of RGO-wrapped Se particulates, the …
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
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-enabled hybrid particulate for use as a cathode active material of an alkali metal battery wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a plurality of fine selenium particles or coatings, having a diameter or thickness from 0.5 nm to p m, and the graphene sheets and the selenium particles or coatings are mutually bonded or agglomerated into said hybrid particulate containing an exterior graphene sheet or multiple exterior graphene sheets embracing said selenium particles or coatings, and wherein said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 1, wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of non-carbon elements or a non-pristine graphene material having 0.01% to 20% by weight of non-carbon elements, wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof. Original
The hybrid particulate of claim 1, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 1, wherein said selenium coatings or particles have a thickness or diameter from 0.5 nm to 100 nm. Original
The hybrid particulate of claim 1, having a diameter from 100 nm to 100 pm. Original
The hybrid particulate of claim 1, havin g a diameter from 1.0 m to 50 pm. Original
The hybrid particulate of claim 1, having a substantially spherical or ellipsoidal shape. Original
The hybrid particulate of claim 1, wherein said hybrid particulate further contains interior g raphene sheets in physical contact with said selenium particles or coatings and with said exterior graphene sheet. Original
The hybrid particulate of claim 1 wherein the graphene amount is from 0.1 % to 10 % by weight of the total weight of graphene and selenium combined. Original
The hybrid particulate of claim 1 wherein said hybrid particulate has an electrical conductivity greater than 10 4 S/cm. Original
The hybrid particulate of claim 1, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet for m having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 1, further comprising a carbon material in electronic contact with said selenium and a graphene sheet. Original
The hybrid particulate of claim 1, further comprising a carbon material coated on at least one of said selenium particles or coatings, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 1. Original
An alkali metal-selenium battery cathode containing the hybrid particulate of claim 1 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 1. Original
A graphene-enabled hybrid particulate for use as an alkali metal battery cathode active material, wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a single selenium particle, having a diameter or thickness from 0.5 nm to 30 p m, and the graphene sheet or plurality of graphene sheets encapsulate the selenium particle and wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of noncarbon elements or a non-pristine graphene material having 0.01% to 20% by weight of noncarbon elements, wherein said non-pristine graphene is not graphene oxide or reduced graphene oxide and is selected from graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof and wherein said graphene is in an amount of from 0.01 % to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 3, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 3, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet form having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 3, further comprising a carbon material coated on said selenium particle, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 3. Original
(Ori g inal) An alkali metal-selenium battery cathode containing the hybrid particulate of claim 3 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 3. Original
Layer stacks claimed or described, ordered top of device to substrate.
graphene-enabled hybrid particulate
alkali metal-selenium battery cathode
alkali metal-selenium battery
Materials described outside the worked examples.
graphene
selenium
Se
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electrical conductivity of hybrid particulate | ≥ 0.0001 S/cm | graphene |
Thickness | 0.5–100 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,923,720Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 Schematic drawing illustrating the processes for producing conventional paper, mat, film, and membrane of simply aggregated graphite flakes/platelets or …
FIG. 2(A) Schematic of a graphene-enhanced hybrid particulate according to a embodiment of the present invention; and
FIG. 3 The charge and discharge cycling results of three Li-Se cells, one containing a presently invented cathode structure of RGO-wrapped Se particulates, the …
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
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-enabled hybrid particulate for use as a cathode active material of an alkali metal battery wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a plurality of fine selenium particles or coatings, having a diameter or thickness from 0.5 nm to p m, and the graphene sheets and the selenium particles or coatings are mutually bonded or agglomerated into said hybrid particulate containing an exterior graphene sheet or multiple exterior graphene sheets embracing said selenium particles or coatings, and wherein said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 1, wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of non-carbon elements or a non-pristine graphene material having 0.01% to 20% by weight of non-carbon elements, wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof. Original
The hybrid particulate of claim 1, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 1, wherein said selenium coatings or particles have a thickness or diameter from 0.5 nm to 100 nm. Original
The hybrid particulate of claim 1, having a diameter from 100 nm to 100 pm. Original
The hybrid particulate of claim 1, havin g a diameter from 1.0 m to 50 pm. Original
The hybrid particulate of claim 1, having a substantially spherical or ellipsoidal shape. Original
The hybrid particulate of claim 1, wherein said hybrid particulate further contains interior g raphene sheets in physical contact with said selenium particles or coatings and with said exterior graphene sheet. Original
The hybrid particulate of claim 1 wherein the graphene amount is from 0.1 % to 10 % by weight of the total weight of graphene and selenium combined. Original
The hybrid particulate of claim 1 wherein said hybrid particulate has an electrical conductivity greater than 10 4 S/cm. Original
The hybrid particulate of claim 1, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet for m having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 1, further comprising a carbon material in electronic contact with said selenium and a graphene sheet. Original
The hybrid particulate of claim 1, further comprising a carbon material coated on at least one of said selenium particles or coatings, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 1. Original
An alkali metal-selenium battery cathode containing the hybrid particulate of claim 1 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 1. Original
A graphene-enabled hybrid particulate for use as an alkali metal battery cathode active material, wherein said hybrid particulate comprises a single or a plurality of graphene sheets and a single selenium particle, having a diameter or thickness from 0.5 nm to 30 p m, and the graphene sheet or plurality of graphene sheets encapsulate the selenium particle and wherein said graphene sheets contain a pristine graphene material having less than 0.01% by weight of noncarbon elements or a non-pristine graphene material having 0.01% to 20% by weight of noncarbon elements, wherein said non-pristine graphene is not graphene oxide or reduced graphene oxide and is selected from graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof and wherein said graphene is in an amount of from 0.01 % to 30% by weight based on the total weight of graphene and selenium combined, wherein said graphene-enabled hybrid particulate contains at least one interior graphene sheet. Previously presented
The hybrid particulate of claim 3, wherein said particulate further comprises a second element selected from S n, Sb, Bi, S, Te, or a combination thereof and the weight of said second element is less than the weight of selenium. Original
The hybrid particulate of claim 3, wherein said selenium particles are in a nanowire, nanotube, nanodisc, nanoribbon, nanobelt, or nanoplatelet form having a diameter or thickness smaller than 100 nm. Original
The hybrid particulate of claim 3, further comprising a carbon material coated on said selenium particle, wherein said carbon material is selected from polymeric carbon, amorphous carbon, chemical vapor deposition carbon, carbon black, acetylene black, activated carbon, fine expanded graphite particle with a dimension smaller than 100 nm, artificial graphite particle, natural graphite particle, or a combination thereof. Original
A powder mass containing a plurality of particulates as defined in claim 3. Original
(Ori g inal) An alkali metal-selenium battery cathode containing the hybrid particulate of claim 3 as a cathode active material. Original
An alkali metal-selenium battery containing an anode, a cathode, an electrolyte in ionic contact with the cathode and the anode, wherein the cathode comprises the hybrid particulate of claim 3. Original
Layer stacks claimed or described, ordered top of device to substrate.
graphene-enabled hybrid particulate
alkali metal-selenium battery cathode
alkali metal-selenium battery
Materials described outside the worked examples.
graphene
selenium
Se
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 Ragone plots (cell power density vs. cell energy density) of two Li metal-selenium cells: one containing pristine graphene encapsulated Se nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electrical conductivity of hybrid particulate | ≥ 0.0001 S/cm | graphene |
Thickness | 0.5–100 nm |
Related documents with shared materials, methods, properties, or citations.
non-pristine graphene
second element additive (Sn, Sb, Bi, S, or Te)
carbon material
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
| — |
Thickness | 1–10 nm | — |
Duration | 900–7200 s | — |
Duration | 48–72 hours | — |
Duration | 4–120 hours | — |
Temperature | 20–25 °C | — |
— | 140–300 W | — |
— | 10–30 W | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Thickness | 40–100 nm | — |
Thickness | 30–200 nm | — |
Thickness | 70–100 nm | — |
Thickness | 180–350 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–60 minutes | — |
Duration | 5–16 hours | — |
Duration | 48–96 hours | — |
Duration | 10–100 minutes | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≥ 1 nm | — |
non-pristine graphene
second element additive (Sn, Sb, Bi, S, or Te)
carbon material
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
| — |
Thickness | 1–10 nm | — |
Duration | 900–7200 s | — |
Duration | 48–72 hours | — |
Duration | 4–120 hours | — |
Temperature | 20–25 °C | — |
— | 140–300 W | — |
— | 10–30 W | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Thickness | 40–100 nm | — |
Thickness | 30–200 nm | — |
Thickness | 70–100 nm | — |
Thickness | 180–350 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–60 minutes | — |
Duration | 5–16 hours | — |
Duration | 48–96 hours | — |
Duration | 10–100 minutes | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≥ 1 nm | — |
non-pristine graphene
second element additive (Sn, Sb, Bi, S, or Te)
carbon material
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
| — |
Thickness | 1–10 nm | — |
Duration | 900–7200 s | — |
Duration | 48–72 hours | — |
Duration | 4–120 hours | — |
Temperature | 20–25 °C | — |
— | 140–300 W | — |
— | 10–30 W | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Thickness | 40–100 nm | — |
Thickness | 30–200 nm | — |
Thickness | 70–100 nm | — |
Thickness | 180–350 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–60 minutes | — |
Duration | 5–16 hours | — |
Duration | 48–96 hours | — |
Duration | 10–100 minutes | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≥ 1 nm | — |
non-pristine graphene
second element additive (Sn, Sb, Bi, S, or Te)
carbon material
FIG. 5 Ragone plots (cell power density vs. cell energy density) of 4 alkali metal-selenium cells: a Na-Se cell featuring RGO-encapsulated selenium …
| — |
Thickness | 1–10 nm | — |
Duration | 900–7200 s | — |
Duration | 48–72 hours | — |
Duration | 4–120 hours | — |
Temperature | 20–25 °C | — |
— | 140–300 W | — |
— | 10–30 W | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Thickness | 40–100 nm | — |
Thickness | 30–200 nm | — |
Thickness | 70–100 nm | — |
Thickness | 180–350 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–60 minutes | — |
Duration | 5–16 hours | — |
Duration | 48–96 hours | — |
Duration | 10–100 minutes | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 10 nm | — |
Thickness | ≥ 1 nm | — |