Porous separator having inverse opal structure for secondary battery and method for manufacturing the same
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United States of America Patent
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Oct 30, 2018
Grant Date -
Jan 14, 2016
app pub date -
Oct 31, 2014
filing date -
Oct 31, 2013
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Abstract
The present disclosure provides a porous separator substrate with an inverse opal structure obtained by using an engineering plastic resin with high heat-resistance, and a manufacturing method thereof. In the method, a non-crosslinked polymer resin is used to form an opal structure and a crosslinked polymer resin is penetrated into the opal structure and an organic solvent is used to remove the polymer particles being used to form the opal structure, thereby manufacturing a porous substrate with an inverse opal structure. According to the present disclosure, a separator having good porosity and air permeability can be provided without the problems of heat-resistance decrease, pore closing and thickness decrease.
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