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U.S. Department of Energy
Office of Scientific and Technical Information

Sodium--sulfur battery. [design of internal seal]

Patent ·
OSTI ID:6384697
A new seal for a sodium--sulfur battery is disclosed. The sodium--sulfur battery uses two cylindrical containers for containing sulfur and sodium in molten states and a beta--alumina electrolyte tube located primarily within the sulfur container. The battery disclosed includes a novel header, preferably a metal header, between the containers and through which the beta--alumina tube extends. In order to prevent either the sulfur or sodium from passing between the header and tube, the header includes an inner circumferential surface which forms a continuous mechanical seal around and against the tube to prevent sulfur or sodium passage. The header is attached to, but must electrically isolate, the two containers. 2 figures.
Assignee:
Electric Power Research Inst., Inc.
Patent Number(s):
US 4124740
OSTI ID:
6384697
Country of Publication:
United States
Language:
English