US3793080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed primary sodium-halogen battery with bromine-iodine mixture
Assignee: General Electric Co
•
Filing: 1972-01-10
•
Granted: 1974-02-19
•
Expires: 1992-01-10
Abstract
Abstract A sealed primary sodium-halogen battery 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 nonaqueous organic electrolyte, a solid sodium crystalline ion-conductive electrolyte positioned in the casing adjacent the anode, and a cathode positioned adjacent the opposite side of the electrolyte, the cathode comprising a mixture of bromine and iodine with from 5 to 60 weight percent of iodine with electronically conductive material selected from the class consisting of porous matrix material, dissolved small amounts of specific additives, and combinations of such materials and additives.
Inventors
- 👤 H Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
In a sealed primary sodium-halogen battery as in claim 1, in which 10 to 20 weight percent of iodine is contained in the mixture of bromine and iodine.
Claim 2
Dependent Claim
22 words
In a sealed primary sodium-halogen battery as in claim 1, in which the electronically conductive material of the cathode is carbon felt.
Claim 3
Dependent Claim
22 words
In a sealed primary sodium-halogen battery as in claim 1, in which the electronically conductive material of the cathode is foam metal.
Claim 4
Dependent Claim
73 words
In a sealed primary sodium-halogen battery as in claim 1, in which the casing has an anode portion and a cathode portion, the anode portion consisting of a metal selected from the class consisting of nickel, Kovar alloy, niobium and tantalum, the cathode portion consisting of a metal selected from the class consisting of niobium and tantalum, and the solid electrolyte sealed to the anode portion and the cathode portion by glass seals.
References Cited (Backward Citations)
US3134698A
Cited
US3421994A
Cited
US3373058A
Cited
US3408232A
Cited
US3404036A
Cited
US3455744A
Cited
US3607417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |