US4027076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed lithium-sodium electrochemical cell
Assignee: General Electric Co
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Filing: 1976-02-23
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Granted: 1977-05-31
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Expires: 1996-02-23
Abstract
Abstract A sealed lithium-sodium electrochemical cell is described which comprises a casing, an anode positioned within the casing, the anode selected from the class consisting of lithium-sodium, lithium-sodium as an amalgam, and lithium-sodium in a non-aqueous electrolyte, a cathode positioned within the casing, the cathode functioning with a lithium-sodium type anode and a solid lithium-sodium aluminate electrolyte, and a solid lithium-sodium aluminate electrolyte positioned within the casing between the anode and cathode and in contact with both the anode and cathode, the solid lithium-sodium aluminate electrolyte having an approximate composition of LiNa0.9Al 2 O 3 of which 1.3 to 85% of the total alkali ion content is lithium.
Inventors
- 👤 Gregory C. Farrington
- 👤 Walter L. Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:35
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M6/00; H01M6/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A sealed lithium-sodium electrochemical cell comprises a casing, an anode positioned within the casing, the anode selected from the class consisting of lithium-sodium, lithium-sodium as an amalgam, and lithium-sodium in a non-aqueous electrolyte, the anode consisting of from 1.0 weight percent to 99.0 weight percent lithium and the balance being sodium, a cathode positioned within the casing, the cathode functioning with an anode selected from the class consisting of lithium-sodium, lithium-sodium as an amalgam, and lithium-sodium in a non-aqueous electrolyte and a solid lithium-sodium aluminate electrolyte, and a solid lithium-sodium aluminate electrolyte positioned within the casing between the anode and cathode, the solid lithium-sodium aluminate electrolyte having an approximate composition of LiNaO.sup.. 9Al 2 O 3 of which 1.3 to 85.0 percent of the total alkali content is lithium.
Claim 2
Dependent Claim
129 words
A sealed lithium-sodium electrochemical cell comprises a casing, an anode positioned within the casing, the anode selected from the class consisting of lithium-sodium, lithium-sodium as an amalgam, and lithium-sodium in a non-aqueous electrolyte, the anode consisting of from 1.0 weight percent to 99.0 weight percent lithium and the balance being sodium, a cathode positioned within the casing, the cathode functioning with an anode selected from the class consisting of lithium-sodium, lithium-sodium as an amalgam, and lithium-sodium in a non-aqueous electrolyte and a solid lithium-sodium aluminate electrolyte, and a solid lithium-sodium aluminate electrolyte positioned within the casing between the anode and cathode, the solid lithium-sodium aluminate electrolyte having an approximate composition of LiNaO.sup.. 9Al 2 O 3 of which 1.3 to 85.0 percent of the total alkali content is lithium.
Claim 3
Dependent Claim
37 words
A sealed lithium-sodium electrochemical cell as in claim 1, in which the anode consists of 99 weight percent lithium and 1 weight percent sodium, and the total alkali ion content of the electrolyte is 1.3 percent lithium.
Claim 4
Dependent Claim
37 words
A sealed lithium-sodium electrochemical cell as in claim 1, in which the anode consists of 1 weight percent lithium and 99 weight percent sodium, and the total alkali ion content of the electrolyte is 1.3 percent lithium.
Claim 5
Dependent Claim
37 words
A sealed lithium-sodium electrochemical cell as in claim 1, in which the anode consists of 99 weight percent lithium and 1 weight percent sodium, and the total alkali ion content of the electrolyte is 85 percent lithium.
Claim 6
Dependent Claim
37 words
A sealed lithium-sodium electrochemical cell as in claim 1, in which the anode consists of 1 weight percent lithium and 99 weight percent sodium, and the total alkali ion content of the electrolyte is 85 percent lithium.
References Cited (Backward Citations)
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US3713897A
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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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |