US4260667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal battery cells utilizing molten nitrates as the electrolyte and oxidizer
Assignee: United States Department of the Navy
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Filing: 1980-01-07
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Granted: 1981-04-07
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Expires: 2000-01-07
Abstract
Abstract A thermal battery cell is provided comprising a low-melting point electroe in the presence of halides, a cathode, an oxidizer and a calcium anode.
Inventors
- 👤 Melvin H. Miles
- 👤 Aaron N. Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:43
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
In a thermal battery cell comprising an electrolyte consisting of potassium, lithium, nitrate and halide ions, a cathode immersed in said electrolyte, a calcium anode immersed in said electrolyte and a heat source in thermal contact with said electrolyte for supplying thermal energy thereto, the improvement residing in utilizing an electrolyte having mole percentages of said potassium, lithium, nitrate and halide ions such that the electrolyte will begin melting at about 160° C. but still contain undissolved crystals at 360° C.
Claim 2
Dependent Claim
81 words
In a thermal battery cell comprising an electrolyte consisting of potassium, lithium, nitrate and halide ions, a cathode immersed in said electrolyte, a calcium anode immersed in said electrolyte and a heat source in thermal contact with said electrolyte for supplying thermal energy thereto, the improvement residing in utilizing an electrolyte having mole percentages of said potassium, lithium, nitrate and halide ions such that the electrolyte will begin melting at about 160° C. but still contain undissolved crystals at 360° C.
Claim 3
Dependent Claim
38 words
In a thermal battery cell according to claim 1, the further improvement residing in utilizing as said electrolyte a composition made up from 50 mole percent LiNO 3 , 25 mole percent LiCl and 25 mole percent KCl.
Claim 4
Dependent Claim
37 words
In a thermal battery according to claim 1, the further improvement residing in utilizing as said electrolyte a composition made up from 50 mole percent LiNO 3 , 25 mole percent LiBr and 25 mole percent KBr.
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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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |