Separator for energy storage cells
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United States of America Patent
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Oct 1, 2002
Grant Date -
N/A
app pub date -
Sep 15, 2000
filing date -
Sep 15, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a separator for an energy cell which includes a compressible web made from a blend of elastomeric material and cross-linking agent, the elastomeric material being selected from natural rubber and a mixture of natural rubber and synthetic rubber. The blend is expanded, cast and cured to form a web containing micropores so that the resulting web comprises an open cell structure having a thickness ranging from about 40 to about 150 mils, an alcohol porosity of from about 45 to about 90% and a compressibility of at least about 20%. Lead-acid battery cells containing the separators have the advantage of significantly improved life as a result of the improved strength and resiliency of the separator.
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