US3969138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium-aluminum halide, sulfur battery
Assignee: Beta Research and Development Ltd
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Filing: 1975-06-09
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Granted: 1976-07-13
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Expires: 1995-06-09
Abstract
Abstract A secondary battery utilizing a molten sodium negative reactant, a sulfur-aluminum halide positive reactant melt having a carbon powder dispersed within the melt, a molten sodium haloaluminate electrolyte, and a selectively ionically-conductive separator positioned between the negative and positive reactants.
Inventors
- 👤 John Werth
- 👤 Jack C. Sklarchuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A secondary battery comprising in combination: a. a molten sodium negative reactant; b. a positive reactant comprising molten aluminum halide and molten sulfur; c. a solid member separating the negative and positive reactants, said member being selectively ionically conductive to sodium cations; d. a molten sodium halide-aluminum halide electrolyte on the positive reactant side of the solid member; e. a carbon powder dispersed within the molten sodium halide, molten aluminum halide and molten sulfur; and f. a current collector disposed in each the positive and negative reactants.
Claim 2
Dependent Claim
87 words
A secondary battery comprising in combination: a. a molten sodium negative reactant; b. a positive reactant comprising molten aluminum halide and molten sulfur; c. a solid member separating the negative and positive reactants, said member being selectively ionically conductive to sodium cations; d. a molten sodium halide-aluminum halide electrolyte on the positive reactant side of the solid member; e. a carbon powder dispersed within the molten sodium halide, molten aluminum halide and molten sulfur; and f. a current collector disposed in each the positive and negative reactants.
Claim 3
Dependent Claim
19 words
A battery according to claim 1 wherein the operating temperature of the battery is from about 150°C. to 225°C.
Claim 4
Dependent Claim
13 words
A battery according to claim 1 wherein the solid member is beta alumina.
Claim 5
Dependent Claim
17 words
A battery according to claim 1 wherein the positive reactant comprises molten sulfur and molten aluminum chloride.
Claim 6
Dependent Claim
17 words
A battery according to claim 1 wherein the electrolyte comprises molten sodium chloride and molten aluminum chloride.
Claim 7
Dependent Claim
50 words
A battery according to claim 1 wherein the aluminum halide is selected from the group consisting of the chlorides and bromides of aluminum and mixtures thereof, and wherein the sodium halide-aluminum halide electrolyte is selected from the group consisting of chlorides and bromides of sodium and aluminum and mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |