Chemically rechargeable battery

Details Chemically rechargeable battery Chemically rechargeable battery

1983-03-17

1984-05-15

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Regenerating, salvage or repair feature other than only...

429 19, 429 27, 429221, H01M 650

Patent

active

044488580

ABSTRACT:
Batteries (50) containing oxidized, discharged metal electrodes such as an iron-air battery are charged by removing and storing electrolyte in a reservoir (98), pumping fluid reductant such as formalin (aqueous formaldehyde) from a storage tank (106) into the battery in contact with the surfaces of the electrodes. After sufficient iron hydroxide has been reduced to iron, the spent reductant is drained, the electrodes rinsed with water from rinse tank (102) and then the electrolyte in the reservoir (106) is returned to the battery. The battery can be slowly electrically charged when in overnight storage but can be quickly charged in about 10 minutes by the chemical procedure of the invention.

REFERENCES:
patent: 1488480 (1924-04-01), Edison
patent: 1488481 (1924-04-01), Edison
patent: 2073734 (1937-03-01), Downing
patent: 3847671 (1974-11-01), Leparulo et al.

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