Method of making a current collector for a sodium/sulfur battery
A method is described of making a current collector for a sodium/sulfur battery. The current collector is electronically conductive and resistant to corrosive attack by sodium/polysulfide melts. The method comprises: forming the current collector for the sodium/sulfur battery from an evenly dispersed microscopic composite material formed of 70-90% by volume of aluminium filled with 30-10% by volume of electronically conductive fibers. The fibers are selected from the group of fibers consisting essentially of graphite fibers having a diameter up to 10 microns and silicon carbide fibers having a diameter in a range of 500-1000 angstroms; and treating the current collector after formation thereof so as to remove aluminium from surfaces thereof to be in contact with sodium/polysulfide melts. In this way surface ones of the electronically conductive ceramic fibers extend outwardly from the surfaces into the sodium/polysulfide melts and an aluminum sulfide surface coating can form on the aluminum between adjacent ones of the electronically conductive ceramic fibers when the sodium/sulfur battery formed using the current collector is in operation.
- Assignee:
- Ford Motor Co., Dearborn, MI
- Patent Number(s):
- US 4649022
- OSTI ID:
- 6659413
- Resource Relation:
- Patent File Date: Filed date 23 Apr 1984
- Country of Publication:
- United States
- Language:
- English
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Method of making a current collector for a sodium/sulfur battery
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Related Subjects
ELECTRODES
FABRICATION
SODIUM-SULFUR BATTERIES
ALUMINIUM
ALUMINIUM SULFIDES
CARBON FIBERS
CERAMICS
COMPOSITE MATERIALS
CORROSION RESISTANCE
ELECTRIC CONDUCTIVITY
MELTING
SILICON CARBIDES
SIZE
SODIUM
SULFIDES
SURFACE COATING
ALKALI METALS
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
DEPOSITION
ELECTRIC BATTERIES
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELEMENTS
FIBERS
MATERIALS
METAL-NONMETAL BATTERIES
METALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SULFUR COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries