Patent
US 10,734,639CARBON NANOTUBES-GRAPHENE HYBRID STRUCTURES FOR SEPARATOR FREE SILICON-SULFUR BATTERIES
Adrianus I. Aria, Morteza Gharib
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,734,639Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 E: Schematic top view of another electrochemical cell with interleaved electrodes; the negative electrode is generally c-shaped. [0039]
FIG. 2A. A schematic diagram showing top and side views of a separator free silicon-sulfur battery. A shown in this figure, the battery uses carbon nanotubes-5 …
FIG. 3. Flow chart to fabricate a separator free silicon-sulfur battery using carbon nanotubes-graphene hybrid structures as the scaffolds and enclosures, and …
FIG. 4. A schematic diagram showing advantages of using carbon nanotubes 15-graphene hybrid structures against typical thin film configuration. Carbon …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrochemical cell comprising: a negative electrode comprising a first assembly of carbon nanotubes supporting a silicon active material filling spaces between the nanotubes; a positive electrode comprising a second assembly of carbon nanotubes supporting a sulfur active material; an electrolyte provided between said positive electrode and said negative electrode; said electrolyte capable of conducting charge carriers; and a substrate; wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other and are supported by said substrate; and wherein said first assembly of carbon nanotubes is provided as one or more first strips supported by said substrate and said second assembly of carbon nanotubes is provided as one or more second strips supported by said substrate, said one or more first strips and said one or more second strips arranged in a space filling geometry selected from a group of geometries consisting of[[,]] an interleaved geometry, a nested geometry, a coiled geometry, and a spiral geometry. Currently amended
The electrochemical cell of claim 1, wherein said charge carriers are Li+ ions; and wherein said positive electrode and said negative electrode accommodate said Li+ ions during charge or discharge of said electrochemical cell. Original
The electrochemical cell of claim 1, wherein said silicon active material, said sulfur active material or both are prelithiated. Original
The electrochemical cell of claim 1, wherein said electrochemical cell does not include a separator. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other by at least 10 m. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes is provided on a first current collector supported by said external surface of said substrate and said second assembly of carbon nanotubes is provided on a second current collector supported by said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said first strips are separated from said second strips by at least 10 m; and wherein said first strips and said second strips are characterized by widths selected from the range of 10 m to 1 mm and lengths selected from the range of 30 m to 3 mm. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise single walled carbon nanotubes, multiwalled carbon nanotubes, metallic carbon nanotubes or any combination of these; and wherein said carbon nanotubes of said first assembly and said second assembly are independently characterized by radial dimensions selected over the range of 5 nm to 100 nm, length dimensions selected over the range of 10 m to 5 mm and an average surface concentration greater than or equal to 25 nanotubes per m-2. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise one or more carbon nanotube arrays or carbon nanotube networks. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly comprise a first array of vertically aligned carbon nanotubes and said carbon nanotubes of said second assembly comprise a second array of vertically aligned carbon nanotubes. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly provide a mechanical scaffold capable of accommodating stress resulting from expansion of said silicon active material or said sulfur active material during charging or discharge of said electrochemical cell so as to allow a reversible change in volume of said negative electrode or said positive electrode greater than or equal to 200 % without mechanical failure. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material comprises elemental silicon or an alloy thereof and wherein said sulfur active material comprises elemental sulfur. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material and said sulfur active material independently comprise a single crystalline material, a polycrystalline material or amorphous material and wherein said silicon active material is provided on said carbon nanotubes of said first assembly or said sulfur active material is provided on said carbon nanotubes of said second assembly by a process selected from the group consisting physical vapor deposition, chemical vapor deposition, sputtering, electrodeposition, solution casting, liquid infusion and liquid deposition. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly, said sulfur active material at least partially coats said carbon nanotubes of said second assembly or wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly and said sulfur active material at least partially coats said carbon nanotubes of said second assembly. Original
The electrochemical cell of claim 1, wherein said silicon active material provides a coating on at least a portion of said carbon nanotubes of said first assembly having a thickness greater than or equal to 0.1 m or wherein said sulfur active material provides a coating on at least a portion of said carbon nanotubes of said second assembly having a thickness greater than or equal to 0.1 m. Previously presented
The electrochemical cell of claim 1, further comprising a first graphene layer at least partially enclosing said silicon active material of said negative electrode, a second graphene layer at least partially enclosing said sulfur active material of said positive electrode or both. Previously presented
The electrochemical cell of claim 1, wherein said electrolyte is a liquid phase electrolyte, gel electrolyte or a solid phase electrolyte having an ionic conductivity for said charge carriers greater than or equal to 1.5 S cm⁻¹. Previously presented
The electrochemical cell of claim 1, comprising a secondary electrochemical cell. Previously presented
The electrochemical cell of claim 1, comprising a lithium ion battery. Previously presented
The electrochemical cell of claim 1, having a specific energy greater than or equal to about 387.5 Wh kg-1, or a standard cell voltage equal to or greater than 1.35 V or a cycle life equal to or greater than about 1000 cycles. Previously presented
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are independently provided on an external surface of said substrate, or on one or more intermediate structures provided between said first assembly of carbon nanotubes or said second assembly of carbon nanotubes and said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the nested geometry. New
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the interleaved geometry, wherein one of the positive or negative electrodes comprises recessed features and the other of the positive or negative electrodes comprises projecting features. New
6-7. Canceled
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12-14. Canceled
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16-18. Canceled
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25-26. Canceled
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33-34. Canceled
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42-43. Canceled
Canceled
47-57. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
separator-free silicon-sulfur electrochemical cell
Materials described outside the worked examples.
silicon active material
Si
sulfur active material
S
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific energy (claimed minimum) | 387.5 Wh kg-1 | — |
standard cell voltage (claimed minimum) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,734,639Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 E: Schematic top view of another electrochemical cell with interleaved electrodes; the negative electrode is generally c-shaped. [0039]
FIG. 2A. A schematic diagram showing top and side views of a separator free silicon-sulfur battery. A shown in this figure, the battery uses carbon nanotubes-5 …
FIG. 3. Flow chart to fabricate a separator free silicon-sulfur battery using carbon nanotubes-graphene hybrid structures as the scaffolds and enclosures, and …
FIG. 4. A schematic diagram showing advantages of using carbon nanotubes 15-graphene hybrid structures against typical thin film configuration. Carbon …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrochemical cell comprising: a negative electrode comprising a first assembly of carbon nanotubes supporting a silicon active material filling spaces between the nanotubes; a positive electrode comprising a second assembly of carbon nanotubes supporting a sulfur active material; an electrolyte provided between said positive electrode and said negative electrode; said electrolyte capable of conducting charge carriers; and a substrate; wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other and are supported by said substrate; and wherein said first assembly of carbon nanotubes is provided as one or more first strips supported by said substrate and said second assembly of carbon nanotubes is provided as one or more second strips supported by said substrate, said one or more first strips and said one or more second strips arranged in a space filling geometry selected from a group of geometries consisting of[[,]] an interleaved geometry, a nested geometry, a coiled geometry, and a spiral geometry. Currently amended
The electrochemical cell of claim 1, wherein said charge carriers are Li+ ions; and wherein said positive electrode and said negative electrode accommodate said Li+ ions during charge or discharge of said electrochemical cell. Original
The electrochemical cell of claim 1, wherein said silicon active material, said sulfur active material or both are prelithiated. Original
The electrochemical cell of claim 1, wherein said electrochemical cell does not include a separator. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other by at least 10 m. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes is provided on a first current collector supported by said external surface of said substrate and said second assembly of carbon nanotubes is provided on a second current collector supported by said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said first strips are separated from said second strips by at least 10 m; and wherein said first strips and said second strips are characterized by widths selected from the range of 10 m to 1 mm and lengths selected from the range of 30 m to 3 mm. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise single walled carbon nanotubes, multiwalled carbon nanotubes, metallic carbon nanotubes or any combination of these; and wherein said carbon nanotubes of said first assembly and said second assembly are independently characterized by radial dimensions selected over the range of 5 nm to 100 nm, length dimensions selected over the range of 10 m to 5 mm and an average surface concentration greater than or equal to 25 nanotubes per m-2. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise one or more carbon nanotube arrays or carbon nanotube networks. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly comprise a first array of vertically aligned carbon nanotubes and said carbon nanotubes of said second assembly comprise a second array of vertically aligned carbon nanotubes. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly provide a mechanical scaffold capable of accommodating stress resulting from expansion of said silicon active material or said sulfur active material during charging or discharge of said electrochemical cell so as to allow a reversible change in volume of said negative electrode or said positive electrode greater than or equal to 200 % without mechanical failure. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material comprises elemental silicon or an alloy thereof and wherein said sulfur active material comprises elemental sulfur. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material and said sulfur active material independently comprise a single crystalline material, a polycrystalline material or amorphous material and wherein said silicon active material is provided on said carbon nanotubes of said first assembly or said sulfur active material is provided on said carbon nanotubes of said second assembly by a process selected from the group consisting physical vapor deposition, chemical vapor deposition, sputtering, electrodeposition, solution casting, liquid infusion and liquid deposition. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly, said sulfur active material at least partially coats said carbon nanotubes of said second assembly or wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly and said sulfur active material at least partially coats said carbon nanotubes of said second assembly. Original
The electrochemical cell of claim 1, wherein said silicon active material provides a coating on at least a portion of said carbon nanotubes of said first assembly having a thickness greater than or equal to 0.1 m or wherein said sulfur active material provides a coating on at least a portion of said carbon nanotubes of said second assembly having a thickness greater than or equal to 0.1 m. Previously presented
The electrochemical cell of claim 1, further comprising a first graphene layer at least partially enclosing said silicon active material of said negative electrode, a second graphene layer at least partially enclosing said sulfur active material of said positive electrode or both. Previously presented
The electrochemical cell of claim 1, wherein said electrolyte is a liquid phase electrolyte, gel electrolyte or a solid phase electrolyte having an ionic conductivity for said charge carriers greater than or equal to 1.5 S cm⁻¹. Previously presented
The electrochemical cell of claim 1, comprising a secondary electrochemical cell. Previously presented
The electrochemical cell of claim 1, comprising a lithium ion battery. Previously presented
The electrochemical cell of claim 1, having a specific energy greater than or equal to about 387.5 Wh kg-1, or a standard cell voltage equal to or greater than 1.35 V or a cycle life equal to or greater than about 1000 cycles. Previously presented
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are independently provided on an external surface of said substrate, or on one or more intermediate structures provided between said first assembly of carbon nanotubes or said second assembly of carbon nanotubes and said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the nested geometry. New
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the interleaved geometry, wherein one of the positive or negative electrodes comprises recessed features and the other of the positive or negative electrodes comprises projecting features. New
6-7. Canceled
Canceled
Canceled
12-14. Canceled
Canceled
16-18. Canceled
Canceled
25-26. Canceled
Canceled
Canceled
Canceled
33-34. Canceled
Canceled
Canceled
42-43. Canceled
Canceled
47-57. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
separator-free silicon-sulfur electrochemical cell
Materials described outside the worked examples.
silicon active material
Si
sulfur active material
S
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific energy (claimed minimum) | 387.5 Wh kg-1 | — |
standard cell voltage (claimed minimum) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,734,639Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 E: Schematic top view of another electrochemical cell with interleaved electrodes; the negative electrode is generally c-shaped. [0039]
FIG. 2A. A schematic diagram showing top and side views of a separator free silicon-sulfur battery. A shown in this figure, the battery uses carbon nanotubes-5 …
FIG. 3. Flow chart to fabricate a separator free silicon-sulfur battery using carbon nanotubes-graphene hybrid structures as the scaffolds and enclosures, and …
FIG. 4. A schematic diagram showing advantages of using carbon nanotubes 15-graphene hybrid structures against typical thin film configuration. Carbon …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrochemical cell comprising: a negative electrode comprising a first assembly of carbon nanotubes supporting a silicon active material filling spaces between the nanotubes; a positive electrode comprising a second assembly of carbon nanotubes supporting a sulfur active material; an electrolyte provided between said positive electrode and said negative electrode; said electrolyte capable of conducting charge carriers; and a substrate; wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other and are supported by said substrate; and wherein said first assembly of carbon nanotubes is provided as one or more first strips supported by said substrate and said second assembly of carbon nanotubes is provided as one or more second strips supported by said substrate, said one or more first strips and said one or more second strips arranged in a space filling geometry selected from a group of geometries consisting of[[,]] an interleaved geometry, a nested geometry, a coiled geometry, and a spiral geometry. Currently amended
The electrochemical cell of claim 1, wherein said charge carriers are Li+ ions; and wherein said positive electrode and said negative electrode accommodate said Li+ ions during charge or discharge of said electrochemical cell. Original
The electrochemical cell of claim 1, wherein said silicon active material, said sulfur active material or both are prelithiated. Original
The electrochemical cell of claim 1, wherein said electrochemical cell does not include a separator. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other by at least 10 m. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes is provided on a first current collector supported by said external surface of said substrate and said second assembly of carbon nanotubes is provided on a second current collector supported by said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said first strips are separated from said second strips by at least 10 m; and wherein said first strips and said second strips are characterized by widths selected from the range of 10 m to 1 mm and lengths selected from the range of 30 m to 3 mm. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise single walled carbon nanotubes, multiwalled carbon nanotubes, metallic carbon nanotubes or any combination of these; and wherein said carbon nanotubes of said first assembly and said second assembly are independently characterized by radial dimensions selected over the range of 5 nm to 100 nm, length dimensions selected over the range of 10 m to 5 mm and an average surface concentration greater than or equal to 25 nanotubes per m-2. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise one or more carbon nanotube arrays or carbon nanotube networks. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly comprise a first array of vertically aligned carbon nanotubes and said carbon nanotubes of said second assembly comprise a second array of vertically aligned carbon nanotubes. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly provide a mechanical scaffold capable of accommodating stress resulting from expansion of said silicon active material or said sulfur active material during charging or discharge of said electrochemical cell so as to allow a reversible change in volume of said negative electrode or said positive electrode greater than or equal to 200 % without mechanical failure. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material comprises elemental silicon or an alloy thereof and wherein said sulfur active material comprises elemental sulfur. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material and said sulfur active material independently comprise a single crystalline material, a polycrystalline material or amorphous material and wherein said silicon active material is provided on said carbon nanotubes of said first assembly or said sulfur active material is provided on said carbon nanotubes of said second assembly by a process selected from the group consisting physical vapor deposition, chemical vapor deposition, sputtering, electrodeposition, solution casting, liquid infusion and liquid deposition. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly, said sulfur active material at least partially coats said carbon nanotubes of said second assembly or wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly and said sulfur active material at least partially coats said carbon nanotubes of said second assembly. Original
The electrochemical cell of claim 1, wherein said silicon active material provides a coating on at least a portion of said carbon nanotubes of said first assembly having a thickness greater than or equal to 0.1 m or wherein said sulfur active material provides a coating on at least a portion of said carbon nanotubes of said second assembly having a thickness greater than or equal to 0.1 m. Previously presented
The electrochemical cell of claim 1, further comprising a first graphene layer at least partially enclosing said silicon active material of said negative electrode, a second graphene layer at least partially enclosing said sulfur active material of said positive electrode or both. Previously presented
The electrochemical cell of claim 1, wherein said electrolyte is a liquid phase electrolyte, gel electrolyte or a solid phase electrolyte having an ionic conductivity for said charge carriers greater than or equal to 1.5 S cm⁻¹. Previously presented
The electrochemical cell of claim 1, comprising a secondary electrochemical cell. Previously presented
The electrochemical cell of claim 1, comprising a lithium ion battery. Previously presented
The electrochemical cell of claim 1, having a specific energy greater than or equal to about 387.5 Wh kg-1, or a standard cell voltage equal to or greater than 1.35 V or a cycle life equal to or greater than about 1000 cycles. Previously presented
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are independently provided on an external surface of said substrate, or on one or more intermediate structures provided between said first assembly of carbon nanotubes or said second assembly of carbon nanotubes and said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the nested geometry. New
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the interleaved geometry, wherein one of the positive or negative electrodes comprises recessed features and the other of the positive or negative electrodes comprises projecting features. New
6-7. Canceled
Canceled
Canceled
12-14. Canceled
Canceled
16-18. Canceled
Canceled
25-26. Canceled
Canceled
Canceled
Canceled
33-34. Canceled
Canceled
Canceled
42-43. Canceled
Canceled
47-57. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
separator-free silicon-sulfur electrochemical cell
Materials described outside the worked examples.
silicon active material
Si
sulfur active material
S
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific energy (claimed minimum) | 387.5 Wh kg-1 | — |
standard cell voltage (claimed minimum) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,734,639Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 E: Schematic top view of another electrochemical cell with interleaved electrodes; the negative electrode is generally c-shaped. [0039]
FIG. 2A. A schematic diagram showing top and side views of a separator free silicon-sulfur battery. A shown in this figure, the battery uses carbon nanotubes-5 …
FIG. 3. Flow chart to fabricate a separator free silicon-sulfur battery using carbon nanotubes-graphene hybrid structures as the scaffolds and enclosures, and …
FIG. 4. A schematic diagram showing advantages of using carbon nanotubes 15-graphene hybrid structures against typical thin film configuration. Carbon …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electrochemical cell comprising: a negative electrode comprising a first assembly of carbon nanotubes supporting a silicon active material filling spaces between the nanotubes; a positive electrode comprising a second assembly of carbon nanotubes supporting a sulfur active material; an electrolyte provided between said positive electrode and said negative electrode; said electrolyte capable of conducting charge carriers; and a substrate; wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other and are supported by said substrate; and wherein said first assembly of carbon nanotubes is provided as one or more first strips supported by said substrate and said second assembly of carbon nanotubes is provided as one or more second strips supported by said substrate, said one or more first strips and said one or more second strips arranged in a space filling geometry selected from a group of geometries consisting of[[,]] an interleaved geometry, a nested geometry, a coiled geometry, and a spiral geometry. Currently amended
The electrochemical cell of claim 1, wherein said charge carriers are Li+ ions; and wherein said positive electrode and said negative electrode accommodate said Li+ ions during charge or discharge of said electrochemical cell. Original
The electrochemical cell of claim 1, wherein said silicon active material, said sulfur active material or both are prelithiated. Original
The electrochemical cell of claim 1, wherein said electrochemical cell does not include a separator. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are physically separated from each other by at least 10 m. Original
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes is provided on a first current collector supported by said external surface of said substrate and said second assembly of carbon nanotubes is provided on a second current collector supported by said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said first strips are separated from said second strips by at least 10 m; and wherein said first strips and said second strips are characterized by widths selected from the range of 10 m to 1 mm and lengths selected from the range of 30 m to 3 mm. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise single walled carbon nanotubes, multiwalled carbon nanotubes, metallic carbon nanotubes or any combination of these; and wherein said carbon nanotubes of said first assembly and said second assembly are independently characterized by radial dimensions selected over the range of 5 nm to 100 nm, length dimensions selected over the range of 10 m to 5 mm and an average surface concentration greater than or equal to 25 nanotubes per m-2. Previously presented
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly and said second assembly comprise one or more carbon nanotube arrays or carbon nanotube networks. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly comprise a first array of vertically aligned carbon nanotubes and said carbon nanotubes of said second assembly comprise a second array of vertically aligned carbon nanotubes. Original
The electrochemical cell of claim 1, wherein said carbon nanotubes of said first assembly provide a mechanical scaffold capable of accommodating stress resulting from expansion of said silicon active material or said sulfur active material during charging or discharge of said electrochemical cell so as to allow a reversible change in volume of said negative electrode or said positive electrode greater than or equal to 200 % without mechanical failure. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material comprises elemental silicon or an alloy thereof and wherein said sulfur active material comprises elemental sulfur. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material and said sulfur active material independently comprise a single crystalline material, a polycrystalline material or amorphous material and wherein said silicon active material is provided on said carbon nanotubes of said first assembly or said sulfur active material is provided on said carbon nanotubes of said second assembly by a process selected from the group consisting physical vapor deposition, chemical vapor deposition, sputtering, electrodeposition, solution casting, liquid infusion and liquid deposition. Previously presented
The electrochemical cell of claim 1, wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly, said sulfur active material at least partially coats said carbon nanotubes of said second assembly or wherein said silicon active material at least partially coats said carbon nanotubes of said first assembly and said sulfur active material at least partially coats said carbon nanotubes of said second assembly. Original
The electrochemical cell of claim 1, wherein said silicon active material provides a coating on at least a portion of said carbon nanotubes of said first assembly having a thickness greater than or equal to 0.1 m or wherein said sulfur active material provides a coating on at least a portion of said carbon nanotubes of said second assembly having a thickness greater than or equal to 0.1 m. Previously presented
The electrochemical cell of claim 1, further comprising a first graphene layer at least partially enclosing said silicon active material of said negative electrode, a second graphene layer at least partially enclosing said sulfur active material of said positive electrode or both. Previously presented
The electrochemical cell of claim 1, wherein said electrolyte is a liquid phase electrolyte, gel electrolyte or a solid phase electrolyte having an ionic conductivity for said charge carriers greater than or equal to 1.5 S cm⁻¹. Previously presented
The electrochemical cell of claim 1, comprising a secondary electrochemical cell. Previously presented
The electrochemical cell of claim 1, comprising a lithium ion battery. Previously presented
The electrochemical cell of claim 1, having a specific energy greater than or equal to about 387.5 Wh kg-1, or a standard cell voltage equal to or greater than 1.35 V or a cycle life equal to or greater than about 1000 cycles. Previously presented
The electrochemical cell of claim 1, wherein said first assembly of carbon nanotubes and said second assembly of carbon nanotubes are independently provided on an external surface of said substrate, or on one or more intermediate structures provided between said first assembly of carbon nanotubes or said second assembly of carbon nanotubes and said external surface of said substrate. Previously presented
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the nested geometry. New
The electrochemical cell of claim 1, wherein said one or more first strips and said one or more second strips arranged in the interleaved geometry, wherein one of the positive or negative electrodes comprises recessed features and the other of the positive or negative electrodes comprises projecting features. New
6-7. Canceled
Canceled
Canceled
12-14. Canceled
Canceled
16-18. Canceled
Canceled
25-26. Canceled
Canceled
Canceled
Canceled
33-34. Canceled
Canceled
Canceled
42-43. Canceled
Canceled
47-57. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
separator-free silicon-sulfur electrochemical cell
Materials described outside the worked examples.
silicon active material
Si
sulfur active material
S
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific energy (claimed minimum) | 387.5 Wh kg-1 | — |
standard cell voltage (claimed minimum) |
Related documents with shared materials, methods, properties, or citations.
carbon nanotubes
graphene
electrolyte
| 1.35 V |
| — |
cycle life (claimed minimum) | 1000 cycles | — |
electrolyte ionic conductivity (claimed minimum) | 1.5 S cm⁻¹ | electrolyte |
Thickness | 20–200 nm | — |
Thickness | 15–400 nm | — |
Thickness | 15–100 nm | — |
Thickness | 15–50 nm | — |
Thickness | 1–100 nm | — |
Thickness | 79-14 nanometers. | — |
Thickness | ≤ 1 µm | — |
Thickness | 5–100 nm | — |
Thickness | 10–200 nm | — |
Voltage | ≥ 1.35 V | — |
Thickness | 20–100 nm | — |
carbon nanotubes
graphene
electrolyte
| 1.35 V |
| — |
cycle life (claimed minimum) | 1000 cycles | — |
electrolyte ionic conductivity (claimed minimum) | 1.5 S cm⁻¹ | electrolyte |
Thickness | 20–200 nm | — |
Thickness | 15–400 nm | — |
Thickness | 15–100 nm | — |
Thickness | 15–50 nm | — |
Thickness | 1–100 nm | — |
Thickness | 79-14 nanometers. | — |
Thickness | ≤ 1 µm | — |
Thickness | 5–100 nm | — |
Thickness | 10–200 nm | — |
Voltage | ≥ 1.35 V | — |
Thickness | 20–100 nm | — |
carbon nanotubes
graphene
electrolyte
| 1.35 V |
| — |
cycle life (claimed minimum) | 1000 cycles | — |
electrolyte ionic conductivity (claimed minimum) | 1.5 S cm⁻¹ | electrolyte |
Thickness | 20–200 nm | — |
Thickness | 15–400 nm | — |
Thickness | 15–100 nm | — |
Thickness | 15–50 nm | — |
Thickness | 1–100 nm | — |
Thickness | 79-14 nanometers. | — |
Thickness | ≤ 1 µm | — |
Thickness | 5–100 nm | — |
Thickness | 10–200 nm | — |
Voltage | ≥ 1.35 V | — |
Thickness | 20–100 nm | — |
carbon nanotubes
graphene
electrolyte
| 1.35 V |
| — |
cycle life (claimed minimum) | 1000 cycles | — |
electrolyte ionic conductivity (claimed minimum) | 1.5 S cm⁻¹ | electrolyte |
Thickness | 20–200 nm | — |
Thickness | 15–400 nm | — |
Thickness | 15–100 nm | — |
Thickness | 15–50 nm | — |
Thickness | 1–100 nm | — |
Thickness | 79-14 nanometers. | — |
Thickness | ≤ 1 µm | — |
Thickness | 5–100 nm | — |
Thickness | 10–200 nm | — |
Voltage | ≥ 1.35 V | — |
Thickness | 20–100 nm | — |