Electrodes for metal/air batteries and bipolar metal/air batteries incorporating the same
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United States of America Patent
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Sep 8, 1992
Grant Date -
N/A
app pub date -
Dec 31, 1990
filing date -
Dec 31, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a bipolar electrode for use in a primary metal/air battery of the type having a metallic slurry anode, the electrode comprising a current-collecting, electrolyte-impervious metallic structure having a first surface for collecting current from the metallic slurry anode, and a metallic air cathode spaced from the structure and having a plurality of electrically-conductive protrusions extending at least from a central area of a first surface thereof and attached to a second surface of the structure, a second surface of the air cathode being provided with an inner hydrophobic waterproof barrier layer which is impermeable to electrolyte but permeable to oxygen gas and coated with an outer active catalytic layer.
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