US3607413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for electrochemical alloying of aluminum and lithium
Assignee: Standard Oil Co
•
Filing: 1968-09-10
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Granted: 1971-09-21
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Expires: 1988-09-10
Abstract
Abstract Method for electrochemical alloying of aluminum and lithium by immersing a pair of electrodes, one being of aluminum, into a molten bath of lithium salt or salts, and imposing a potential to electrolyze the molten salt and drive lithium into aluminum.
Inventors
- 👤 Edward S Buzzelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:07
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/40; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
15 words
Process of claim 1 wherein said mixture consists essentially of lithium chloride and potassium chloride.
Claim 2
Dependent Claim
32 words
Process of claim 1 wherein said mixture consists essentially of lithium chloride-potassium chloride eutectic melting at about 325* C. and being 59 mole percent lithium chloride and 41 mole percent potassium chloride.
Claim 3
Dependent Claim
19 words
Process of claim 1 wherein said potential is maintained at substantially -3.35 volts with respect to chlorine reference electrode.
Claim 4
Dependent Claim
19 words
Process of claim 1 wherein a current density is maintained in the range of 200-500 milliamps per square centimeter.
Claim 5
Dependent Claim
19 words
process of claim 4 wherein a current density is maintained in the range of 200-500 milliamps per square centimeter.
Claim 6
Independent Claim
114 words
The method of alloying lithium with aluminum which comprises passing a current through a heated fused bath of one or more halides of an alkali metal or an alkaline earth metal or a combination thereof which bath contains lithium ions, there being a carbon cathode and an anode of aluminum or an alloy of up to 95 weight percent of aluminum and no more than 30 weight percent of lithium in contact with the bath, and thereby passing lithium ions into contact with said electrode and alloying the lithium therewith to secure an electrode composed of from about 5 to 30 weight percent lithium and from 70-95 weight percent aluminum, based on total composition.
Claim 7
Dependent Claim
47 words
The method of claim 7 carried out in a secondary electrical energy storage tank, the alloy comprising at least 70 weight percent of aluminum and 5 weight percent of lithium, lithium of the alloy being subsequently ionized into the fused bath by reversal of The current flow.
References Cited (Backward Citations)
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |