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US 2018/0123106 A1Published application
Complex separator for electrochemical element, comprising bonding layer, and electrochemical element comprising same
AssigneeLG Chem, Ltd.
InventorsJin-Young SHIN, Young-Deok KIM, Su-Jin YOON
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Abstract
The present disclosure relates to a composite separator for an electrochemical element and the electrochemical element including the same. More specifically, the present disclosure relates to a separator with excellent durability and improved formation of a bonding layer of a thin film and improved bonding force with an electrode, and a method for manufacturing the same. Further, the present disclosure pertains to an electrochemical element comprising the aforementioned separator.
Claims15
A composite separator for electrochemical element, the separator comprising:
- a porous polymeric material;
- and
- a porous coating layer formed on at least one side surface of the porous polymeric material,
- wherein the composite separator includes an electrode bonding layer formed on both surfaces or on at least one surface of outermost surfaces thereof,
- the porous coating layer includes inorganic particles and binder resin, an entirety or portion of a surface of the inorganic particles being coated with the binder resin, and thus the particles are laminated by point binding and/or plane binding between the inorganic particles and stratified,
- the porous coating layer has a porous structure formed by interstitial volume between the inorganic particles, and
- the electrode bonding layer includes a particulate polymer having adhesive characteristics, and glass transition temperature of the particulate polymer is −110° C. to 0° C.
4 more elements
Dependencies are inferred from the claim text.