US4123566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
NA/S Cell reactant container with metal aluminide coating
Assignee: Electric Power Research Institute
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Filing: 1977-06-23
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Granted: 1978-10-31
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Expires: 1997-06-23
Abstract
Abstract Electrically conducting components of sodium/sulfur batteries subject to the corrosive attack of the cell reactants are protected by aluminiding to provide a conductive, protective coating of a metal aluminide. The protective coating finds particular application in the metal conducting container forming the sulfur compartment, where the metal aluminide reacts with the sulfur and sodium polysulfide to form a protective, doped, aluminum sulfide coating, which is conductive due to the presence of the metal from the container.
Inventors
- 👤 Debajyoti Chatterji
- 👤 Robert R. Dubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/661; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M50/00; H01M50/10; H01M50/116; H01M50/117; H01M50/119; H01M50/124; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
In a method for fabricating a sodium sulfur battery having iron, cobalt or nickel based container or component surfaces and operable at temperatures of 300° C. or higher, where said container or component surface is exposed to sulfur-sodium polysulfide melts, the improvement which comprises: aluminiding said surfaces prior to fabrication of said battery.
Claim 2
Dependent Claim
53 words
In a method for fabricating a sodium sulfur battery having iron, cobalt or nickel based container or component surfaces and operable at temperatures of 300° C. or higher, where said container or component surface is exposed to sulfur-sodium polysulfide melts, the improvement which comprises: aluminiding said surfaces prior to fabrication of said battery.
Claim 3
Dependent Claim
13 words
A method according to claim 1, wherein said aluminiding is by pack aluminiding.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein said component is a container for the sulfur cell of said sodium-sulfur battery.
References Cited (Backward Citations)
US3589935A
Cited
US3677789A
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US3644145A
Cited
US3900613A
Cited
US3982957A
Cited
US3979273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |