US5079674A
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Supercapacitor electrode and method of fabrication thereof
Assignee: Motorola Solutions Inc
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Filing: 1990-12-24
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Granted: 1992-01-07
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Expires: 2010-12-24
Abstract
Abstract An electrode (34) for use in supercapacitors is provided, comprising a sheet of a first active electrode (30) comprising metal oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phsophides, or selenides (22) coated onto porous carbon particles (20). The coated carbon particles are bound together in a matrix (24) of a fluorocarbon resin. The first electrode (30) is laminated to a dielectric separator (32), and a second active electrode (30) similar in composition to the first is laminated to the other side of the dielectric separator (32).
Inventors
- 👤 Francis P. Malaspina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:58
CPC Classifications
H; H01; H01G; H01G11/00; H01G11/22; H01G11/30; H01G11/32; H01G11/38; H01G11/42; H01G11/52; H01G11/46; Y; Y02; Y02E; Y02E60/00; Y02E60/13
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
65 words
An electrode for use in supercapacitors, comprising a laminate of: a dielectric separator; and first and second active electrodes comprising metal oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides coated onto porous carbon particles, the coated carbon particles being bound together in a matrix of fluorocarbon resin; the first and second active electrodes being bonded to opposite sides of the dielectric separator.
Claim 2
Dependent Claim
65 words
An electrode for use in supercapacitors, comprising a laminate of: a dielectric separator; and first and second active electrodes comprising metal oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides coated onto porous carbon particles, the coated carbon particles being bound together in a matrix of fluorocarbon resin; the first and second active electrodes being bonded to opposite sides of the dielectric separator.
Claim 3
Dependent Claim
34 words
The electrode of claim 1, wherein the metal oxide, sulfide, hydride, nitride, phosphide, or selenide is selected from the group consisting of compounds of ruthenium, tantalum, rhodium, iridium, cobalt, nickel, molybdenum, tungsten and vanadium.
Claim 4
Dependent Claim
16 words
The electrode of claim 1, wherein the separator is plastic, microporous glass, paper, felt or cellulose.
Claim 5
Dependent Claim
13 words
The electrode of claim 1, wherein the porous carbon particles comprise activated carbon.
Claim 6
Dependent Claim
11 words
The electrode of claim 1, wherein the fluorocarbon resin is polytetrafluoroethylene.
Claim 7
Dependent Claim
44 words
The electrode of claim 1, wherein the metal oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides are selected from the group consisting of oxides, sulfides, hydrides, nitrides, phosphides, or selenides of ruthenium, tantalum, rhodium, iridium, cobalt, nickel. molybdenum, tungsten and vanadium.
Claim 8
Dependent Claim
82 words
A supercapacitor electrode, comprising: first and second active electrodes comprising metal oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides coated onto activated carbon particles, the coated carbon particles being bound together in a tetrafluoroethylene resin matrix and formed into a sheet; and a plastic separator having first and second sides; the first active electrode being adjacent to the first side of the plastic separator, and the second active electrode being adjacent to the second side of the plastic separator.
Claim 9
Dependent Claim
82 words
A supercapacitor electrode, comprising: first and second active electrodes comprising metal oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides coated onto activated carbon particles, the coated carbon particles being bound together in a tetrafluoroethylene resin matrix and formed into a sheet; and a plastic separator having first and second sides; the first active electrode being adjacent to the first side of the plastic separator, and the second active electrode being adjacent to the second side of the plastic separator.
Claim 10
Independent Claim
135 words
A method of manufacturing a supercapacitor electrode, comprising the step of: a) providing a separator; b) providing an aqueous solution of metal salts selected from the group consisting of chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides of ruthenium, tantalum, rhodium, iridium, cobalt, nickel, molybdenum, tungsten or vanadium; c) adding porous carbon particles to the solution and mixing to form a slurry, the metal salts adsorbing onto the porous carbon particles; d) converting the metal salts to equivalent metal hydroxides; e) decanting the solution; f) adding an emulsion of a flurocarbon polymer to the decanted solution; g) kneading the admixture of fluorocarbon polymer and decanted solution until the fluorocarbon polymer is fibrilated; h) forming the kneaded admixture into a sheet; i) drying the kneaded admixture; and j) laminating the sheet to the separator.
Claim 11
Independent Claim
135 words
A method of manufacturing a supercapacitor electrode, comprising the step of: a) providing a separator; b) providing an aqueous solution of metal salts selected from the group consisting of chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides of ruthenium, tantalum, rhodium, iridium, cobalt, nickel, molybdenum, tungsten or vanadium; c) adding porous carbon particles to the solution and mixing to form a slurry, the metal salts adsorbing onto the porous carbon particles; d) converting the metal salts to equivalent metal hydroxides; e) decanting the solution; f) adding an emulsion of a flurocarbon polymer to the decanted solution; g) kneading the admixture of fluorocarbon polymer and decanted solution until the fluorocarbon polymer is fibrilated; h) forming the kneaded admixture into a sheet; i) drying the kneaded admixture; and j) laminating the sheet to the separator.
Claim 12
Dependent Claim
32 words
The method of claim 8, comprising a further step of laminating a second of the rolled kneaded admixture to the separator to form a structure having the separator laminated between the sheets.
Claim 13
Dependent Claim
25 words
The method of claim 8, wherein the amount of fluorocarbon polymer is greater than about 0.1 weight percent and less than about 5 weight percent.
Claim 14
Dependent Claim
25 words
The method of claim 8, wherein the step of drying the admixture comprises drying in an oven between about 95° C. and about 125° C.
Claim 15
Dependent Claim
22 words
The method of claim 8, wherein the step of converting the metal salts comprises reacting the metal salts with an alkali hydroxide.
Claim 16
Dependent Claim
19 words
The method of claim 8, wherein the step of forming a sheet comprises extruding or rolling the kneaded admixture.
Claim 17
Dependent Claim
87 words
An electrical energy storage device, comprising at least two electrodes, an electrolyte, and a container therefor, wherein at least one electrode comprises: a dielectric separator; and first and second active electrodes comprising oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides of ruthenium, tantalum, rhodium, iridium, cobalt, nickel molybdenum, tungsten or vanadium coated onto porous carbon particles, the coated carbon particles being bound together in a matrix of fluorocarbon resin, the first and second active electrodes being bonded to opposite sides of the dielectric separator.
Claim 18
Dependent Claim
87 words
An electrical energy storage device, comprising at least two electrodes, an electrolyte, and a container therefor, wherein at least one electrode comprises: a dielectric separator; and first and second active electrodes comprising oxides, chlorides, bromides, sulfates, nitrates, sulfides, hydrides, nitrides, phosphides, or selenides of ruthenium, tantalum, rhodium, iridium, cobalt, nickel molybdenum, tungsten or vanadium coated onto porous carbon particles, the coated carbon particles being bound together in a matrix of fluorocarbon resin, the first and second active electrodes being bonded to opposite sides of the dielectric separator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |