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US3879220A
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Sealed primary sodium-halogen cell
Assignee: General Electric Co
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Filing: 1974-03-21
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Granted: 1975-04-22
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Expires: 1994-03-21
Abstract
Abstract A sealed primary sodium-halogen cell is disclosed which comprises a casing, an anode positioned in the casing, the anode selected from the class consisting of sodium, sodium as an amalgam, and sodium in a non-aqueous electrolyte, a solid ionconductive electrolyte positioned in the casing adjacent the anode, and a cathode positioned adjacent the opposite side of the electrolyte, the cathode comprising a halogen selected from the class consisting of bromine, iodine and mixtures thereof in a solvent of nitrobenzene. Electronically conductive material, small amounts of ionic salts or a combination of both are added to increase further the cell conductivity.
Inventors
- 👤 Fritz G Will
- 👤 Gregory C Farrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
A SEALED PRIMARY SODIUM-HALOGEN CELL COMPRISING A CASING, AN ANODE POSITIONED IN THE CASING, THE AODE SELECTED FROM THE CLASS CONSISTING OF SODIUM, SODIUM AS AN AMALGAM, AND SODIUM IN A NONAQUEOUS ELECTROLYTE, A SOLID SODIUM BETAALUMINA ION-CONDUCTIVE ELECTROLYTE POSITIONED IN THE CASING ADJACENT THE ANODE, AND A CATHOD POSITIONED ADJACENT THE OPPOSITE SIDE OF THE ELECTROLYTE, THE CATHODE COMPRISING FROM 5.0 WEIGHT PERCENT TO 95.0 WEIGHT PERCENT OF A HALOGEN SELECTED FROM THE CLASS CONSISTING OF BROMINE, IODINE, AND MIXTURES THEREOF IN NITROBENZENE AS A SOLVENT.
Claim 2
Dependent Claim
87 words
A SEALED PRIMARY SODIUM-HALOGEN CELL COMPRISING A CASING, AN ANODE POSITIONED IN THE CASING, THE AODE SELECTED FROM THE CLASS CONSISTING OF SODIUM, SODIUM AS AN AMALGAM, AND SODIUM IN A NONAQUEOUS ELECTROLYTE, A SOLID SODIUM BETAALUMINA ION-CONDUCTIVE ELECTROLYTE POSITIONED IN THE CASING ADJACENT THE ANODE, AND A CATHOD POSITIONED ADJACENT THE OPPOSITE SIDE OF THE ELECTROLYTE, THE CATHODE COMPRISING FROM 5.0 WEIGHT PERCENT TO 95.0 WEIGHT PERCENT OF A HALOGEN SELECTED FROM THE CLASS CONSISTING OF BROMINE, IODINE, AND MIXTURES THEREOF IN NITROBENZENE AS A SOLVENT.
Claim 3
Dependent Claim
87 words
A sealed primary sodium-halogen cell comprising a casing, an anode positioned in the casing, the anode selected from the class consisting of sodium, sodium as an amalgam, and sodium in a nonaqueous electrolyte, a solid sodium beta-alumina ion-conductive electrolyte positioned in the casing adjacent the anode, and a cathode positioned adjacent the opposite side of the electrolyte, the cathode comprising from 5.0 weight percent to 95.0 weight percent of a halogen selected from the class consisting of bromine, iodine, and mixtures thereof in nitrobenzene as a solvent.
Claim 4
Dependent Claim
87 words
A sealed primary sodium-halogen cell comprising a casing, an anode positioned in the casing, the anode selected from the class consisting of sodium, sodium as an amalgam, and sodium in a nonaqueous electrolyte, a solid sodium beta-alumina ion-conductive electrolyte positioned in the casing adjacent the anode, and a cathode positioned adjacent the opposite side of the electrolyte, the cathode comprising from 5.0 weight percent to 95.0 weight percent of a halogen selected from the class consisting of bromine, iodine, and mixtures thereof in nitrobenzene as a solvent.
Claim 5
Dependent Claim
21 words
A sealed primary sodium-halogen battery as in claim 1, in which the cathode contains a small amount of an ionic salt.
Claim 6
Dependent Claim
18 words
A sealed primary sodium-halogen battery as in claim 1, in which the cathode contains an electronically conductive material.
Claim 7
Dependent Claim
25 words
A sealed primary sodium-halogen battery as in claim 1, in which the cathode contains bromine and from 0.01 to 1.5 weight percent of sodium bromide.
Claim 8
Dependent Claim
25 words
A sealed primary sodium-halogen battery as in claim 1, in which the cathode contains iodine and from 0.01 to 5.0 weight percent of sodium iodide.
References Cited (Backward Citations)
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Cited
US3773558A
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US3703415A
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US3817790A
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US3762955A
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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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |