Separator and Non-Aqueous Electrolyte Secondary Battery Using Same
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United States of America Patent
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Issued Date -
Mar 20, 2008
app pub date -
Sep 16, 2005
filing date -
Dec 7, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A separator including at least a layer containing a fine particulate filler and a shutdown layer. The fine particulate filler includes a joined-particle filler that is in the form of a plurality of primary particles joined and bonded to one another. A non-aqueous electrolyte secondary battery including this separator exhibits improved safety, high performance and large current discharge capability particularly at low temperatures.
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