Ionic barrier

Details Ionic barrier Ionic barrier

1980-03-10

1981-03-31

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

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

429192, 204296, H01M 216

Patent

active

042594170

ABSTRACT:
The invention features an electrochemical cell having two fluid-containing compartments separated by a nonselective microporous membrane. Select ions which would normally pass through the membrane under the influence of an ionic field, are prevented from passing through the membrane by a polyelectrolyte which has migrated through the compartment fluid to the membrane. The polyelectrolyte acts as an ionic barrier to the passage of select ions, thus effectively increasing the ion-selective capability of the membrane and, hence, the coulombic efficiency of the electrochemical cell.

REFERENCES:
patent: 3015681 (1962-01-01), Long
patent: 3481785 (1969-12-01), Ikari
patent: 3657104 (1972-04-01), Hodgdon
patent: 3660170 (1972-05-01), Rampel
patent: 4060673 (1977-11-01), Dey
patent: 4074028 (1978-02-01), Well
patent: 4125450 (1978-11-01), Degueldre et al.
patent: 4133941 (1979-01-01), Sheibley
patent: 4181777 (1980-01-01), Spaziante et al.
patent: 4204941 (1980-05-01), Niccolini

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