ORGANIC/INORGANIC COMPOSITE POROUS SEPARATOR AND PREPARATION METHOD THEREOF AND ELECTROCHEMICAL DEVICE
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United States of America Patent
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Feb 26, 2015
app pub date -
Jul 29, 2014
filing date -
Aug 21, 2013
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Abstract
The present disclosure provides an organic/inorganic composite porous separator and a preparation method thereof and an electrochemical device. The organic/inorganic composite porous separator comprises: a porous substrate; and an organic/inorganic composite porous coating coated on at least one surface of the porous substrate; the organic/inorganic composite porous coating comprises inorganic particles, an adhesive and organic particles with at least two swelling degrees, and the organic particles are swollen by a plasticizer. A preparation method of an organic/inorganic composite porous separator is used for preparing the previous organic/inorganic composite porous separator. An electrochemical device comprises the organic/inorganic composite porous separator. The separator can form an excellent interface, thereby reducing the risk of organic particles blocking micro pores, helping to improve the permeability of the separator, and improving the conductivity of the separator.
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