Patent US5151848A successfully refreshed from Google Patents.
US5151848A
Expired / Lapsed
US
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Supercapacitor
Assignee: United States Department of the Air Force
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Filing: 1990-08-24
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Granted: 1992-09-29
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Expires: 2010-08-24
Abstract
Abstract The invention is a supercapacitor cell having electrode plates of titanium coated with ruthenia impregnated with the solid polymer electrolyte perfluorosulfonic acid. The impregnation is carried out in a high pressure shock apparatus.
Inventors
- 👤 Duane Finello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:00
CPC Classifications
H; H01; H01G; H01G11/00; H01G11/22; H01G11/24; H01G11/30; H01G11/46; H01G11/54; H01G11/56; H01G11/84; Y; Y02; Y02E; Y02E60/00; Y02E60/13
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A supercapacitor, said supercapacitor comprising: a first plate, said first plate having a porous surface; a second plate, said second plate having a porous surface; a solid polymer electrolyte, said solid polymer electrolyte impregnated into the porous surface of said first and said second plate; means for electrically connecting to said plates; and means for housing said plates with said solid polymer electrolyte therein and said means for electrically connecting, said supercapacitor having an energy density ranging from 0.1 to 2.0 joules per cubic centimeter.
Claim 2
Dependent Claim
85 words
A supercapacitor, said supercapacitor comprising: a first plate, said first plate having a porous surface; a second plate, said second plate having a porous surface; a solid polymer electrolyte, said solid polymer electrolyte impregnated into the porous surface of said first and said second plate; means for electrically connecting to said plates; and means for housing said plates with said solid polymer electrolyte therein and said means for electrically connecting, said supercapacitor having an energy density ranging from 0.1 to 2.0 joules per cubic centimeter.
Claim 3
Dependent Claim
20 words
A supercapacitor as defined in claim 1 wherein said plates are composed of titanium coated with high surface area ruthenia.
Claim 4
Dependent Claim
15 words
A supercapacitor as defined in claim 1 wherein said solid polymer electrolyte is perfluorosulfonic acid.
Claim 5
Dependent Claim
86 words
A process of making a supercapacitor cell, said process comprising the steps of: assembling a sandwich of at least one pair of plates and a layer of solid polymer electrolyte between each pair of plates; placing said sandwich in a receiving chamber of a means for providing a high pressure shock wave to said receiving chamber; applying sufficient high pressure to cause said solid polymer electrolyte to impregnate into said plates; and removing said supercapacitor cell from said receiving chamber after applying said sufficient high pressure.
Claim 6
Dependent Claim
86 words
A process of making a supercapacitor cell, said process comprising the steps of: assembling a sandwich of at least one pair of plates and a layer of solid polymer electrolyte between each pair of plates; placing said sandwich in a receiving chamber of a means for providing a high pressure shock wave to said receiving chamber; applying sufficient high pressure to cause said solid polymer electrolyte to impregnate into said plates; and removing said supercapacitor cell from said receiving chamber after applying said sufficient high pressure.
Claim 7
Dependent Claim
18 words
A process as defined in claim 4 wherein said plates comprise titanium coated with high surface area ruthenia.
Claim 8
Dependent Claim
15 words
A process as defined in claim 5 wherein said solid polymer electrolyte comprises perfluorosulfonic acid.
Claim 9
Dependent Claim
15 words
A process as defined in claim 5 wherein said sufficient pressure is about one kilobar.
Claim 10
Dependent Claim
25 words
A process as defined in claim 5 wherein said supercapacitor cell has an energy density of about 0.1 to about 2.0 joules per cubic centimeter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |