US4377624A
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Novel cathodes for primary solid electrolyte cells
Assignee: Duracell Inc USA
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Filing: 1981-11-03
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Granted: 1983-03-22
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Expires: 2001-11-03
Abstract
Abstract High energy density primary solid state cells using as a cathode, ionically and electronically conductive dischargeable metal chalcogenides.
Inventors
- 👤 Ashok V. Joshi
- 👤 Charles C. Liang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:02
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M6/00; H01M6/14; H01M6/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A primary solid state electrochemical cell operable in such state at room temperature comprising a solid active metal anode, a solid electrolyte comprising a lithium salt having a room temperature ionic conductivity greater than 1×10 -9 ohm -1 cm -1 and a solid cathode wherein said cathode consists of one or more metal chalcogenides wherein the ionic and electronic conductivity of said metal chalcogenides ranges between 10 -10 to 10 2 ohm -1 cm -1 at room temperature.
Claim 2
Dependent Claim
78 words
A primary solid state electrochemical cell operable in such state at room temperature comprising a solid active metal anode, a solid electrolyte comprising a lithium salt having a room temperature ionic conductivity greater than 1×10 -9 ohm -1 cm -1 and a solid cathode wherein said cathode consists of one or more metal chalcogenides wherein the ionic and electronic conductivity of said metal chalcogenides ranges between 10 -10 to 10 2 ohm -1 cm -1 at room temperature.
Claim 3
Dependent Claim
18 words
The primary solid state electrochemical cell of claim 1 wherein said active metal anode is comprised of lithium.
Claim 4
Dependent Claim
18 words
The primary solid state electrochemical cell of claim 2 wherein said solid electrolyte is comprised of lithium iodide.
Claim 5
Dependent Claim
20 words
The primary solid state electrochemical cell of claim 3 wherein said solid electrolyte further includes lithium hydroxide and aluminum oxide.
Claim 6
Dependent Claim
16 words
The primary solid state electrochemical cell of claim 4 wherein said metal chalcogenide is titanium disulfide.
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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |