SEPARATOR FOR POWER STORAGE DEVICE
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United States of America Patent
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Issued Date -
Dec 16, 2010
app pub date -
Jun 9, 2010
filing date -
Jun 11, 2009
priority date (Note) -
Abandoned
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Abstract
This invention is relates to a separator of a power storage device which is a laminate of a polyolefin porous membrane layer and a fiber layer comprising a solvent spun cellulose; and a separator of a power storage device, wherein the separator is a laminate of a polyolefin porous membrane layer and a fiber layer comprising a solvent spun cellulose, and the volume of a cavity part of the fiber layer is smaller than the volume of a resin part of the polyolefin porous membrane layer.
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