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US4330601A
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Rechargeable nonaqueous silver alloy anode cell
Assignee: Duracell Inc USA
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Filing: 1981-02-27
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Granted: 1982-05-18
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Expires: 2001-02-27
Abstract
Abstract A secondary electrochemical cell comprising a solid anode, an electrolyte and a cathode. The anode is a solid solution of silver and a metal which is an alkaline or alkali earth metal. The metal is capable of forming a solid solution with the anode on the recharging of the anode. Alternatively, the cell is formed in the discharged state with a solid porous silver anode, a cathode, a nonaqueous liquid electrolyte containing the alkaline or alkaline earth metal salts therein. The alloyed anode improves the rechargeability of the cell.
Inventors
- 👤 Arabinda N. Dey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:26
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/40; H01M10/00; H01M10/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
A secondary electrochemical cell comprising a solid anode, an electrolyte and a cathode operatively associated, therewith said anode comprising a solid solution of silver and a metal selected from the group consisting of alkali and alkaline earth metals, wherein said metal is capable of forming a solid solution with said anode on the recharging of said anode.
Claim 2
Dependent Claim
57 words
A secondary electrochemical cell comprising a solid anode, an electrolyte and a cathode operatively associated, therewith said anode comprising a solid solution of silver and a metal selected from the group consisting of alkali and alkaline earth metals, wherein said metal is capable of forming a solid solution with said anode on the recharging of said anode.
Claim 3
Dependent Claim
19 words
The cell of claim 1 wherein said metal is selected from the group consisting of lithium, sodium, and beryllium.
Claim 4
Dependent Claim
16 words
The cell of claim 1 wherein said anode comprises a substantially continuous sheet of said alloy.
Claim 5
Dependent Claim
25 words
The cell of claim 1 wherein said alloy contains between about 50 to 80 percent by weight of said metal and the balance comprises silver.
Claim 6
Dependent Claim
25 words
The cell of claim 1 wherein said electrolyte is a nonaqueous liquid containing a liquid depolarizer and wherein said cathode is an inert current collector.
Claim 7
Dependent Claim
21 words
The cell of claim 5 wherein said nonaqueous electrolyte comprises a mixture of lithium salt, acetonitrile, propylene carbonate and sulfur dioxide.
Claim 8
Dependent Claim
37 words
The cell of claim 1 wherein said electrolyte comprises at least one electrolyte solute and at least one nonaqueous solvent which will not detrimentally react with the anode, cathode and solute and wherein said cathode is active.
Claim 9
Dependent Claim
10 words
The cell of claim 2 wherein the metal comprises lithium.
Claim 10
Dependent Claim
22 words
The cell of claim 1 wherein the silver comprises from about 20 to about 50 percent by weight of the solid solution.
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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) | 1985-05-17 | 1985-11-16 | 1986-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-17 | 1989-11-16 | 1990-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-17 | 1993-11-16 | 1994-05-18 | $7700.00 | Window Closed / Lapsed |