Regenerating slurries for use in zinc-air batteries

Details Regenerating slurries for use in zinc-air batteries Regenerating slurries for use in zinc-air batteries

1990-12-31

1993-07-20

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204116, 429 49, C25C 116

Patent

active

052289583

ABSTRACT:
A process for the regeneration of an at least partially spent Zn-alkali slurry for use in metal-air batteries, including subjecting the slurry to at least the steps of (i) separating the slurry into dissolved and undissolved phases; (ii) electrolyzing the separated dissolved phase so that Zn deposits on a cathode in removable form; (iii) removing Zn from the cathode and consolidating the Zn into particles; and (iv) combining the Zn from step (iii) with the separated undissolved phase from step (i) and an additional aqueous Group Ia metal hydroxide.

REFERENCES:
patent: 3847671 (1974-11-01), Leparulo et al.
patent: 3981747 (1976-09-01), Doniat et al.
patent: 4341847 (1982-07-01), Sammells
patent: 4448858 (1984-05-01), Graf et al.
patent: 5006424 (1991-04-01), Evans et al.

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