Electrochemical metal-air cell and electrically and mechanically rechargeable anodes for use therein
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Jan 11, 1993
filing date -
Jan 10, 1992
priority date (Note) -
Expired
status (Latency Note)
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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.
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