METHOD OF PREPARING SEPARATOR FOR LITHIUM SECONDARY BATTERY, SEPARATOR PREPARED THEREFROM, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME
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Jun 5, 2014
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Sep 24, 2012
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Abstract
The present invention provides a method of preparing a separator for a lithium secondary battery, comprising: forming a porous coating layer on at least one surface of a porous substrate, the porous coating layer comprising inorganic particles; bringing polymer particles into electric charging to obtain electrically charged polymer particles; transferring the electrically charged polymer particles on the top surface the porous coating layer to form a functional coating layer; and fixing the functional coating layer with heat and pressure, a separator prepared by the method, and a lithium secondary battery comprising the separator.
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