Zinc/air cell
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United States of America Patent
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Issued Date -
Sep 27, 2007
app pub date -
Mar 22, 2006
filing date -
Mar 22, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A zinc/air depolarized cell wherein the anode comprises zinc particles, aqueous alkaline electrolyte, and aqueous alkaline electrolyte within said anode casing; a cathode within said cathode casing; and an electrolyte permeable separator between said cathode and anode; and a glue comprising crosslinked polyvinylalcohol, preferably crosslinked with a boron containing compound, said glue located between the separator and a side of said cathode to adhesively bond the separator to the cathode. The cell may be in the form of a button cell. The glue provides a strong adhesive bond between the separator, desirably of microporous polypropylene, and the cathode. The glue promotes ionic conductivity at the separator/electrode interface even when the zinc/electrolyte ratio within the anode is elevated.
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