Separator, manufacturing method of the same, and electrochemical device having the same
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United States of America Patent
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Mar 15, 2016
Grant Date -
Sep 19, 2013
app pub date -
Mar 27, 2013
filing date -
Jul 20, 2011
priority date (Note) -
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Abstract
The separator of the present invention comprises a porous composite having a porous substrate and a first porous coating layer formed on at least one surface of the porous substrate and comprising a mixture of inorganic particles and a first binder polymer; and a second porous coating layer formed on a first surface of the porous composite and comprising a mixture of cathode active material particles, a second binder polymer and a first conductive material, a third porous coating layer formed on a second surface of the porous composite and comprising a mixture of anode active material particles, a third binder polymer and a second conductive material, or both of the second porous coating layer and the third porous coating layer. Also, the separator of present invention may further comprise a fourth porous coating layer formed on at least one outermost surface thereof and comprising a fourth binder polymer.
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