US4118549A
Expired / Lapsed
US
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Solid state cell with conductive layer between electrode and electrolyte
Assignee: Duracell Inc USA
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Filing: 1976-12-06
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Granted: 1978-10-03
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Expires: 1996-12-06
Abstract
Abstract A solid state cell separator interposed between electrode and electrolyte thereby allowing use of highly reactive materials in the electrode.
Inventors
- 👤 Charles Chi Liang
- 👤 AshokVenimadhav Joshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:10
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A solid electrochemical cell comprising a solid anode and a solid cathode as electrodes, a solid electrolyte chemically reactive with at least one of said electrodes, and a solid layer positioned between said solid electrolyte and said electrode chemically reactive therewith, said solid layer being chemically unreactive with both said solid electrolyte and said electrode which is chemically reactive with said electrolyte, and said layer having an ionic conductivity in excess of 1 × 10 -9 ohm -1 cm -1 at room temperature.
Claim 2
Dependent Claim
83 words
A solid electrochemical cell comprising a solid anode and a solid cathode as electrodes, a solid electrolyte chemically reactive with at least one of said electrodes, and a solid layer positioned between said solid electrolyte and said electrode chemically reactive therewith, said solid layer being chemically unreactive with both said solid electrolyte and said electrode which is chemically reactive with said electrolyte, and said layer having an ionic conductivity in excess of 1 × 10 -9 ohm -1 cm -1 at room temperature.
Claim 3
Dependent Claim
14 words
The solid state cell of claim 1 wherein said layer comprises a metal chalcogenide.
Claim 4
Dependent Claim
13 words
The solid state cell of claim 1 wherein said layer comprises titanium disulfide.
Claim 5
Dependent Claim
77 words
The solid state cell of claim 1 wherein said layer comprises one or more members of the group consisting of TiS 2 , TiTe 2 , VS 2 , NbS 2 , NbSe 2 , NbTe 2 , TaS 2 , TaTe 2 , MoSe 2 , MoTe 2 , WS 2 , WSe 2 , WTe 2 , Li x MiS 2 , Li x Mos 2 , Na x WO 3 (x<1), and tungsten oxide.
Claim 6
Dependent Claim
12 words
The solid state cell of claim 1 wherein said anode comprises lithium.
Claim 7
Dependent Claim
19 words
The solid state cell of claim 5 wherein said electrolyte comprises a lithium salt chemically reactive with said cathode.
Claim 8
Dependent Claim
13 words
The solid state cell of claim 6 wherein said electrolyte comprises lithium iodide.
Claim 9
Dependent Claim
13 words
The solid state cell of claim 7 wherein said cathode is lead fluoride.
Claim 10
Dependent Claim
13 words
The solid state cell of claim 8 wherein said layer comprises titanium disulfide.
Claim 11
Dependent Claim
23 words
The solid state cell of claim 5 wherein said electrolyte is rubidium silver iodide with said electrolyte being reactive with said lithium anode.
Claim 12
Dependent Claim
43 words
The solid state cell of claim 10 wherein said layer comprises tungsten oxide or a nonstoichiometric salt having a (WO 3 ) -x anion wherein x is less than 1 and said layer is positioned between said lithium and said rubidium silver iodide.
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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |