Fibrous separation membrane for secondary battery and manufacturing method thereof
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United States of America Patent
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Mar 3, 2015
Grant Date -
Oct 4, 2012
app pub date -
Jun 15, 2011
filing date -
Mar 28, 2011
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Abstract
Disclosed herein is a fibrous separation membrane for secondary batteries, comprising: a polymer layer which partially melts and blocks pores thereof thus cutting off electric current when a temperature of a secondary battery is increased; and heat-resistant resin layers applied on both sides of the polymer layer.
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