US4020246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature primary electrolyte cell
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1976-01-21
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Granted: 1977-04-26
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Expires: 1996-01-21
Abstract
Abstract A cell is fabricated using a solid alkali metal anode and a fluid cathode which are separated by a modified aluminate solid barrier which permits the flow of only the alkali metal ions. The fluid cathode can contain a solid, gaseous, or liquid oxidizer in a liquid electrolyte. Operating temperatures for these cells range from less than -40° C to approximately 95° C. At ambient temperatures, energy densities of the cells range from approximately 0.7 to 1.8 watt-hour per cubic centimeter. These cells are electrically rechargeable by raising their temperature above the melting point of sodium.
Inventors
- 👤 Eddie T. Seo
- 👤 Herbert P. Silverman
- 👤 Robert J. Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:22
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M12/00; H01M12/04; H01M12/06; H01M6/00; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A primary cell comprising an enclosed container having: A. a solid alkali metal anode; B. a ceramic electrolyte separator; C. a liquid cathode; D. means to conduct electric current to the exterior of said container; and wherein said anode is in intimate contact with said separator, and said cathode is in intimate contact with the opposite side of said separator.
Claim 2
Dependent Claim
60 words
A primary cell comprising an enclosed container having: A. a solid alkali metal anode; B. a ceramic electrolyte separator; C. a liquid cathode; D. means to conduct electric current to the exterior of said container; and wherein said anode is in intimate contact with said separator, and said cathode is in intimate contact with the opposite side of said separator.
Claim 3
Dependent Claim
19 words
A primary cell according to claim 1 wherein the ceramic electrolyte separator is ionic conductive crystalline sodium aluminate compound.
Claim 4
Dependent Claim
23 words
A primary cell according to claim 1 wherein said alkali metal anode is selected from the group consisting of lithium, sodium, and potassium.
Claim 5
Dependent Claim
44 words
A primary cell according to claim 1 wherein said cathode is a fluid oxidizer selected from the group consisting of air, oxygen, chlorine, iodine, fluorine, bromine, nitrogen oxides, ozone, tetracyanoethylene, quinones, nitrobenzene, tetracyanoquinodimethan, and phenazinium salts dissolved in an organic solvent with sodium hexafluoroarsenate.
Claim 6
Dependent Claim
25 words
A primary cell according to claim 1 wherein said container is made from material selected from the group consisting of glass, plastic, and stainless steel.
Claim 7
Dependent Claim
62 words
A primary cell comprising an enclosed container having: A. a solid alkali metal anodic reactant; B. a ceramic electrolyte separator; C. a liquid cathodic reactant; D. a current collector in juxtaposition with the cathodic reactant and said separator; E. means to conduct electric current to the exterior of said container; and wherein said anodic reactant is in intimate contact with said separator.
Claim 8
Dependent Claim
62 words
A primary cell comprising an enclosed container having: A. a solid alkali metal anodic reactant; B. a ceramic electrolyte separator; C. a liquid cathodic reactant; D. a current collector in juxtaposition with the cathodic reactant and said separator; E. means to conduct electric current to the exterior of said container; and wherein said anodic reactant is in intimate contact with said separator.
Claim 9
Dependent Claim
18 words
A primary cell according to claim 6 wherein the ceramic electrolyte separator is a crystalline sodium aluminate compound.
Claim 10
Dependent Claim
22 words
A primary cell according to claim 6 wherein said anodic reactant is selected from the group consisting of lithium, sodium, and potassium.
Claim 11
Dependent Claim
43 words
A primary cell according to claim 6 wherein said liquid cathodic reactant is selected from the group consisting of air, oxygen, chlorine, fluorine, bromine, iodine, ozone, nitrogen oxides, tetracyanoethylene, quinones, nitrobenzene, tetracyanoquinodimethan, and phenazinium salts dissolved in an organic solvent with sodium hexafluoroarsenate.
Claim 12
Dependent Claim
25 words
A primary cell according to claim 6 wherein said container is made from material selected from the group consisting of glass, plastic, and stainless steel.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |