SEPARATOR HAVING POROUS COATING LAYER AND ELECTROCHEMICAL DEVICE HAVING THE SAME
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United States of America Patent
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Dec 3, 2014
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May 3, 2011
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Abstract
The present invention refers to a method for manufacturing a separator, comprising preparing first inorganic particles having an average diameter of 1 to 10 μm and coated with a coupling agent, and second inorganic particles having an average diameter of 50 to 500 nm and coated with a coupling agent on the surface thereof; mixing the first inorganic particles and the second inorganic particles together with a binder polymer and adding the resulting mixture to a solvent to obtain a slurry; and coating the slurry on at least one surface of a porous substrate.
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