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US 4,048,390 AGranted
Na/s cell reactant container with metal aluminide coating
AssigneeElectric Power Research Institute, Inc.
InventorsDebajyoti Chatterji, Robert R. Dubin
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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.
Claims1
In a sodium-sulfur battery the improvement which comprises:
- electrically conducting components of said battery comprised of a metal or an alloy having a major amount of a metal selected from the group consisting of iron, cobalt and nickel, having an aluminide coating on surfaces in contact with sulfur.
Dependencies are inferred from the claim text.