Sodium sulfur cell and process of manufacturing the same

Details Sodium sulfur cell and process of manufacturing the same Sodium sulfur cell and process of manufacturing the same

1994-09-28

1996-07-23

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

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

Active material in molten state

429218, 296231, H07M11039

Patent

active

055388086

ABSTRACT:
A sodium sulfur cell comprising an anode active material of metallic sodium, and a cathode active material of sulfur or sodium polysulfide, and a beta alumina solid electrolyte separator, the above active materials containing, as an impurity, calcium of at most 20 ppm and/or potassium of at most 200 ppm, by weight. The cell of the invention has excellent characteristics, particularly prolonged electromotive life.

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patent: 4220691 (1980-09-01), Roth et al.
Patent Abstracts of Japan, vol. 11, No. 110 (E-496) [2557], Apr. 7, 1987; & JP-A-61 259 457 (Hitchi Ltd.) Nov. 17, 1986.
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Patent Abstracts of Japan, vol. 7, No. 251 (E-209) [1396] Nov. 8, 1988; & JP-A-58 137 974 (Hitachi Seisakusho K. K.) Aug. 16, 1983.
Chemical Abstracts, vol. 102, No. 2, Jan. 1985, p. 178, Abstract No. 9670a, Columbus, Ohio U.S.; K. W. Browall; "Electrode-induduced beta battery degredation. Final report"& Report 1983, Nyserda-84-9; Order No. T18490102, 35PP.

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