US3870561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric accumulator
Assignee: Battelle Memorial Institute Inc
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Filing: 1972-11-17
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Granted: 1975-03-11
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Expires: 1992-11-17
Abstract
Abstract The housing of an accumulator cell is divided into an anodic compartment and a cathodic compartment by a fluidtight separator of beta alumina permselective to ions from an anode which includes, as an active constituent, an alkali or alkaline-earth metal (e.g. sodium) or lanthanum. The cathode compartment contains an electrolyte in the form of a solution of a salt of the metal of the active anode constituent in a polar organic solvent, capable of dissolving a virtual reaction product formed during the discharge of the accumulator, together with a cathode in the shape of an electronically conductive sintered structure incorporating a cathodically reducible metal compound such as a fluoride of a transition metal. The anode, whose active constituent is classified in group IA, IIA, IIB, or IIIB of the Periodic Table, may include a second metal of the same class forming with it an alloy which is at least partly liquid at an operating temperature of up to about 100* C.
Inventors
- 👤 Jean-Claude Charbonnier
- 👤 Helmut Tannenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/40; F; F21; F21L; F21L14/00; F21V; F21V23/00; H01M10/00; H01M10/05; H01M10/36; H01M10/39; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
169 words
AN ELECTRIC ACCUMULATOR COMPRISING: A CONTAINER DIVIDED INTO AN ANODIC COMPARTMENT AND A CATHODIC COMPARTMENT, AN ANODE IN SAID ANODIC COMPARTMENT CONSISTING ESSENTIALLY OF A COMPOSITION OF AN ACTIVE METALLIC CONSTITUENT AND AT LEAST ONE OTHER METAL, SAID METALLIC CONSTITUENT BEING TAKEN FROM GROUP IA, IIA, IIB OR IIIB OF THE PERIODIC TABLE, SAID METALLIC CONSTITUENT FORMING WITH SAID OTHER METAL AN ALLOY WHICH IS LIQUID AT AN OPERATING TEMPERATURE OF UP TO ABOUT 100*C, A SOLID CATHODE IN SAID CATHODIC COMPARTMENT HAVING A SINTERED ELECTRONICALLY CONDUCTIVE STRUCTURE INCORPORATING A CATHODICALLY REDUCIBLE METAL COMPOUND, A SOLID FLUIDTIGHT SEPARATOR CONSISTING OF BETA ALUMINA PERMEABLE TO THE IONS OF SAID METALLIC CONSTITUENT BETWEEN SAID COMPARTMENTS, AND AN ELECTROLYTE IN SAID CATHODIC COMPARTMENT CONSISTING ESSENTIALLY OF A SOLUTION OF A SALT OF THE METAL OF SAID CONSTITUENT IN AN ORGANIC SOLVENT CAPABLE OF DISSOLVING A REACTION PRODUCT COMPOSED OF CATIONS OF SAID CONSTITUENT AND ANIONS OF SAID REDUCIBLE COMPOUND, SAID CATHODE BEING IMMERSED IN SAID ELECTROLYTE IN SPACED RELATIONSHIP WITH SAID SEPARATOR.
Claim 2
Dependent Claim
169 words
AN ELECTRIC ACCUMULATOR COMPRISING: A CONTAINER DIVIDED INTO AN ANODIC COMPARTMENT AND A CATHODIC COMPARTMENT, AN ANODE IN SAID ANODIC COMPARTMENT CONSISTING ESSENTIALLY OF A COMPOSITION OF AN ACTIVE METALLIC CONSTITUENT AND AT LEAST ONE OTHER METAL, SAID METALLIC CONSTITUENT BEING TAKEN FROM GROUP IA, IIA, IIB OR IIIB OF THE PERIODIC TABLE, SAID METALLIC CONSTITUENT FORMING WITH SAID OTHER METAL AN ALLOY WHICH IS LIQUID AT AN OPERATING TEMPERATURE OF UP TO ABOUT 100*C, A SOLID CATHODE IN SAID CATHODIC COMPARTMENT HAVING A SINTERED ELECTRONICALLY CONDUCTIVE STRUCTURE INCORPORATING A CATHODICALLY REDUCIBLE METAL COMPOUND, A SOLID FLUIDTIGHT SEPARATOR CONSISTING OF BETA ALUMINA PERMEABLE TO THE IONS OF SAID METALLIC CONSTITUENT BETWEEN SAID COMPARTMENTS, AND AN ELECTROLYTE IN SAID CATHODIC COMPARTMENT CONSISTING ESSENTIALLY OF A SOLUTION OF A SALT OF THE METAL OF SAID CONSTITUENT IN AN ORGANIC SOLVENT CAPABLE OF DISSOLVING A REACTION PRODUCT COMPOSED OF CATIONS OF SAID CONSTITUENT AND ANIONS OF SAID REDUCIBLE COMPOUND, SAID CATHODE BEING IMMERSED IN SAID ELECTROLYTE IN SPACED RELATIONSHIP WITH SAID SEPARATOR.
Claim 3
Dependent Claim
169 words
An electric accumulator comprising: a container divided into an anodic compartment and a cathodic compartment; an anode in said anodic compartment consisting essentially of a composition of an active metallic constituent and at least one other metal, said metallic constituent being taken from Group IA, IIA, IIB or IIIB of the Periodic Table, said metallic constituent forming with said other metal an alloy which is liquid at an operating temperature of up to about 100*C; a solid cathode in said cathodic compartment having a sintered electronically conductive structure incorporating a cathodically reducible metal compound; a solid fluidtight separator consisting of beta alumina permeable to the ions of said metallic constituent between said compartments; and an electrolyte in said cathodic compartment consisting essentially of a solution of a salt of the metal of said constituent in an organic solvent capable of dissolving a reaction product composed of cations of said constituent and anions of said reducible compound, said cathode being immersed in said electrolyte in spaced relationship with said separator.
Claim 4
Dependent Claim
169 words
An electric accumulator comprising: a container divided into an anodic compartment and a cathodic compartment; an anode in said anodic compartment consisting essentially of a composition of an active metallic constituent and at least one other metal, said metallic constituent being taken from Group IA, IIA, IIB or IIIB of the Periodic Table, said metallic constituent forming with said other metal an alloy which is liquid at an operating temperature of up to about 100*C; a solid cathode in said cathodic compartment having a sintered electronically conductive structure incorporating a cathodically reducible metal compound; a solid fluidtight separator consisting of beta alumina permeable to the ions of said metallic constituent between said compartments; and an electrolyte in said cathodic compartment consisting essentially of a solution of a salt of the metal of said constituent in an organic solvent capable of dissolving a reaction product composed of cations of said constituent and anions of said reducible compound, said cathode being immersed in said electrolyte in spaced relationship with said separator.
Claim 5
Dependent Claim
21 words
An accumulator as defined in claim 1 wherein said composition is an alloy with a eutectic melting below said operating temperature.
Claim 6
Dependent Claim
19 words
An accumulator as defined in claim 1 wherein said metallic component is an alkali metal or an alkaline-earth metal.
Claim 7
Dependent Claim
20 words
An accumulator as defined in claim 3 wherein said metallic constituent is lithium, sodium, potassium, rubidium, calcium, strontium or barium.
Claim 8
Dependent Claim
17 words
An accumulator as defined in claim 4 wherein said composition is a mixture of sodium and potassium.
Claim 9
Dependent Claim
21 words
An accumulator as defined in claim 1 wherein said beta alumina has substantially the composition Na2O.11Al2O3, said metallic constituent being sodium.
Claim 10
Dependent Claim
27 words
An accumulator as defined in claim 1 wherein said reducible metal compound is a halide, an oxide or a sulfide of a transition metal, silver or mercury.
Claim 11
Dependent Claim
15 words
An accumulator as defined in claim 7 wherein said reducible metal compound is a fluoride.
Claim 12
Dependent Claim
16 words
An accumulator as defined in claim 8 wherein said fluoride is FeF2, FeF3, CuF2, NiF2or CoF3.
Claim 13
Dependent Claim
22 words
An accumulator as defined in claim 1 wherein the salt dissolved in said electrolyte is a chloride, a perchlorite or a hexafluorophosphate.
Claim 14
Dependent Claim
16 words
An accumulator as defined in claim 10 wherein said salt is sodium chloride in saturating concentration.
Claim 15
Dependent Claim
19 words
An accumulator as defined in claim 1 wherein said solvent is dimethylformamide, N,N''-dimethylacetamide, N-methylacetamide, gamma-butyrolactone, tetrahydrofurane or propylene carbonate.
Claim 16
Dependent Claim
18 words
An accumulator as defined in claim 1 wherein said cathode includes an ancillary conductor distributed throughout said structure.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |