Mat Forming Spacers in Microporous Membrane Matrix
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United States of America Patent
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Issued Date -
Jul 15, 2010
app pub date -
Dec 24, 2009
filing date -
Dec 24, 2008
priority date (Note) -
Abandoned
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Abstract
A microporous polymer used as a battery separator may be formed with hard, insoluble dielectric spacer materials in fibrous or particulate form. The spacer materials may form a barrier when the battery separator may melt or be crushed during an over-temperature event, possibly preventing a fire. The spacer materials may be located within the polymer matrix and may be added to a solution used to form the microporous polymer.
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