Electrochemical metal-air cell and electrically and mechanically

Details Electrochemical metal-air cell and electrically and mechanically Electrochemical metal-air cell and electrically and mechanically

1993-01-11

1994-06-07

Gorgos, Kathryn

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 27, 429 22, 429 41, 429 44, 429 59, 429142, 429246, 429233, H01M 818

Patent

active

053188616

ABSTRACT:
An electrochemical metal-air cell for multiple discharge and recharge cycles, includes a housing for accommodating a replaceable metal electrode having a generally planar electrically conductive skeletal member encompassed by an active metal component. At least one generally planar, air permeable but liquid impermeable air electrode is installed at at-least one of the sides of the housing. An electrolyte is provided in contact with the metal and the air electrodes. One or more auxiliary electrodes each constituting a charging anode is engaged when electric current is applied thereto for effecting the reduction and regeneration of the active metal component in one mode of operation, during which the air electrode is disengaged. The charging anode is disengaged in another mode of operation. The metal electrode is removed from the housing to enable the mechanical replacement thereof and is recharged in situ when electric current is applied to the auxiliary charging anode to reduce oxidized active metal thereof.

REFERENCES:
patent: 3532548 (1970-10-01), Stachurski
patent: 3619297 (1971-11-01), Moran
patent: 3630785 (1971-12-01), Whitestone et al.
J. Postula et al. "On the Use of Third Electrodes in a Secondary Zinc-Air Battery", 1969, p. 45, Energy Conversion.
Postula et al., Use of third electrodes in a Secondary Zinc-air battery; Energy Conters; 1970; Chem Ab. 72468p; p. 435.
Skalozubov et al.; Accelerated magnetometric electrical signal testing method for iron electrodes of alkaline batteries; 1969; Chem. Ab.: 72470h; p. 435.

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