Sodium sulphur cells

Details Sodium sulphur cells Sodium sulphur cells

1981-07-07

1982-10-26

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

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

Active material in molten state

429126, 429193, H01M 436

Patent

active

043562418

ABSTRACT:
In a sodium sulphur cell having beta alumina solid electrolyte material separating an anodic region containing sodium from a cathodic region, the surface of the electrolyte exposed to the sodium is pretreated with a first metal, conveniently lead, which will form an alloy with sodium and the anodic region contains a second metal, e.g. titanium or aluminium which will react with sodium oxide to form a sodium oxide compound of the second metal or an oxide thereof. The combined effect of these features gives a significant improvement in preventing resistance rise of the cell on discharge.

REFERENCES:
patent: 4220691 (1980-09-01), Roth et al.
patent: 4248943 (1981-02-01), Ludwig et al.
patent: 4294897 (1981-10-01), Binden

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