Planar sodium-sulfur electrical storage cell

Details Planar sodium-sulfur electrical storage cell Planar sodium-sulfur electrical storage cell

1990-04-10

1991-10-01

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

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

Active material in molten state

429193, H01M 1039

Patent

active

050532944

ABSTRACT:
A sodium-sulfur electrical storage cell (10) has a planar solid electrolyte (16) that is permeable to sodium ions, a planar permeable porous cathode (24) filled with sulfur, a planar permeable porous anode (28) filled with sodium, and an electrically nonconducting, closed flat container (12) for these elements. The electrolyte (16) is thin and strengthened, as by an integral supporting structure (22), or supported, as by a structural anode core structure (36) or by cross members (22) of the container, to minimize its deformation during operation. The anode (28) and cathode (24) are electrically conducting even without sodium and sulfur present, so that the cell (10) fails to a shorted state.

REFERENCES:
patent: 3533848 (1970-10-01), Winn
patent: 3756856 (1973-09-01), Tennehouse
patent: 4252869 (1981-02-01), Heitz et al.
patent: 4800143 (1989-01-01), Harbach
patent: 4894299 (1990-01-01), Morse

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