Process for the preparation of redox battery electrolyte and rec

Details Process for the preparation of redox battery electrolyte and rec Process for the preparation of redox battery electrolyte and rec

1989-01-31

1989-10-17

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204112, 204113, 204130, 423 94, 423493, 429107, 429109, H01M 818, C25B 126, C25C 124

Patent

active

048744832

ABSTRACT:
A redox battery electrolyte is prepared from a chromium and/or iron base raw material containing nickel as impurities by dissolving the raw material in a hydrochloric acid-containing aqueous liquid to form a solution containing chromium ions and/or iron ions and nickel ions, the resulting solution being subjected to a cathodic reduction in the presence of lead ions until the electric potential thereof becomes lower than -0.6 V vs. saturated calomel electrode, thereby to remove the nickel ions therefrom.

REFERENCES:
patent: 466720 (1892-01-01), Currie
patent: 984525 (1911-02-01), Barstow
patent: 4576878 (1986-03-01), Gahn

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