The authors describe the progress which has been made to date inthe utilization of molybdenum as a cathode container material foraerospace sodium/sulfur cells. Two basic designs were utilized duringthis effort. The first of these was a tubular, central sodium celldesigned for application in spacecraft batteries in geosynchronous earthorbits. The second cell was a flat plate cell designed as aproof-of-concept cell for use in a bipolar configuration in high, pulsedpower applications. These two types of cells are described. The weldingdevelopment process is outlined. The initial thermo-compression bondingtrials of molybdenum to alpha-alumina are discussed. Typical performancecharacteristics for the two cell types are summarized
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