Sodium-sulfur electric cell and process for manufacturing the sa

Details Sodium-sulfur electric cell and process for manufacturing the sa Sodium-sulfur electric cell and process for manufacturing the sa

1987-08-24

1989-01-03

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Fluid active material or two-fluid electrolyte combination...

Active material in molten state

296232, H01M 1038, H01M 1039

Patent

active

047956860

ABSTRACT:
The present invention relates to a sodium-sulfur electric cell structure having a specific joint between a cathode tube and an anode tube. The cathode and anode tubes are each made of an iron-nickel base alloy and are joined to each other through the medium of a ceramic ring and an aluminum alloy insert provided on both sides of the ceramic ring. A chromium or chromium-rich layer is formed at the joint boundary between the insert and each tube. The sodium-sulfur electric cell having such a structure eliminates a problem of the occurrence of cracking, improves the airtightness and enables the production of large-sized electric cells.

REFERENCES:
patent: 3959013 (1976-05-01), Breiter
patent: 4037027 (1977-07-01), Desplanches et al.
patent: 4236661 (1980-12-01), Dunn et al.
patent: 4248943 (1981-02-01), Ludwig et al.

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