Chemistry: electrical current producing apparatus – product – and – Fluid active material or two-fluid electrolyte combination... – Active material in molten state
Patent
1980-01-18
1981-05-26
LeFevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Fluid active material or two-fluid electrolyte combination...
Active material in molten state
296232, H01M 436
Patent
active
042699096
ABSTRACT:
A sodium-sulfur cell is disclosed herein along with a method of constructing its sulfur electrode. The cell includes means containing a supply of sodium, an elongated housing joined at one end with sodium containing means, a beta-alumina electrolyte tube located within and extending from the joined end of the housing so as to define a compartment within the housing around the tube. A mixture including sulfur and an electrically conductive filler is disposed within the compartment and forms the cells sulfur electrode. In constructing this electrode, sufficient space is initially provided within the cell compartment around the beta-alumina electrolyte tube to allow for expansion of the sulfur when the latter converts from its solidified state during initial storage to its molten state during operation of the cell, thereby minimizing the possibility of damage to the electrolyte tube as a result of this expansion.
REFERENCES:
patent: 4011367 (1977-03-01), Evans et al.
patent: 4076903 (1978-02-01), Sudworth et al.
patent: 4140841 (1979-02-01), Breiter et al.
patent: 4146684 (1979-03-01), Fischer et al.
King Randall N.
Mitoff Stephan P.
Electric Power Research Institute
LeFevour Charles F.
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