Ford Motor Company Limited

Ragnar P Tischer

Halina S Wroblowa

Gary Mark Crosbie

Gerald J Tennenhouse

Walter Leon Winterbottom

This specification is directed to a method of making a current collector (14) for a sodium/sulfur battery (10). The current collector so-made is electronically conductive and resistant to corrosive attack by sulfur/polysulfide melts. The method includes the step of forming the current collector for the sodium/sulfur battery from a composite material (16) formed of aluminum filled with electronically conductive fibers 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.

Method of making a current collector for a sodium/sulfur battery

This invention relates to electrically conductive ceramic materials suitable for use at high temperatures and in the presence of corrosive environments, e.g., the sodium-sulfur battery. The ceramic material comprises chromium oxide (Cr.sub.2 O.sub.3) doped with at least 0.02 mole percent lithia, wherein the chromium oxide contains less than about 0.5 mole percent of any impurity selected from the group consisting of sodium oxide and potassium oxide, based on moles of chromium oxide. The doped chromium oxide can be used as coatings on metal or metal alloy so as to form corrosion resistant current collectors which may be container/current collectors.

Electronically conductive lithia doped oxide ceramics for use in sodium

This invention relates to electrically conductive current collectors suitable for use at high temperatures and in the presence of corrosive environments, e.g., the sodium-sulfur battery. The current collectors comprises metal or metal alloys coated with ceramic material comprising chromium oxides doped with at least 0.05 mole percent magnesia. The corrosion resistant current collectors may be container/current collectors.

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Birmingham, MI, United States of America

Ragnar P Tischer