Separator for electrochemical device, and electrochemical device
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United States of America Patent
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Jun 29, 2021
Grant Date -
Nov 15, 2007
app pub date -
Dec 8, 2005
filing date -
Dec 8, 2004
priority date (Note) -
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Abstract
An electrochemical device having excellent safety at high temperature is provided by using a separator for an electrochemical device, which is made of a porous film comprising: a porous base (5) having a heat-resistant temperature of 150° C. or higher and including filler particles (3); at least one kind of shutdown resin (6) selected from the group consisting of resin A that has a melting point in a range of 80° C. to 130° C. and resin B that absorbs an electrolyte and swells due to heating, and the swelling degree is increased as the temperature rises; and a binder (4).
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