Galvanic high-temperature cell with solid negative electrode and

Details Galvanic high-temperature cell with solid negative electrode and Galvanic high-temperature cell with solid negative electrode and

1980-06-16

1981-06-23

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Deferred action type

Responsive to heat

429132, H01M 216

Patent

active

042751292

ABSTRACT:
In a high-temperature cell using, for example, the system Li(Al)/LiCl, KCl/MeS (wherein Me is a heavy metal) the operating temperatures and the composition of the molten electrolyte are so selected that a solid phase is created through partial precipitation of at least one of the components of the salt mixture, which provides the separator function between the electrode plates. For example, a non-eutectically composed molten electrolyte of 80% by volume LiCl and 20% by volume KCl, at a given temperature corresponding to the operating point in the phase diagram, contains a solid LiCl frame whose pore volume of about 50% is filled with ion-conducting residual molten LiCl and KCl. Through combination with non-electron conducting inert material in grid or powder form, the permeability of the precipitated solid separator can be further controlled.

REFERENCES:
patent: 4063005 (1977-12-01), Mamantov et al.
patent: 4156758 (1979-05-01), Vissers et al.
patent: 4189827 (1980-02-01), Eberhart et al.

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