Separator für eine Wiederaufladbare Batterie und Wiederaufladbare Batterie damit

Details

Veröffentlichungs-Nr.

EP4742410

Anmeldetag

6. November 2025

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

Abstract

Provided are a separator for a rechargeable lithium battery, and a rechargeable lithium battery including the separator. The separator includes one or more fibrous layers, wherein at least one of the fibrous layers includes a fiber network of fibers containing a first copolymer, and at least one of the fibrous layers includes a polyimide-based fiber, or a core-shell fiber containing a polyimide-based resin. The first copolymer includes a copolymer of a monomer mixture, which includes a first structural unit including a unit derived from an aromatic based unsaturated monomer; a second structural unit derived from a (meth)acryl-based monomer containing an alkyl group with 4 or more carbon atoms in the main chain in an ester moiety; and a third structural unit derived from a monomer containing a sulfonic acid group.

Anmelder

Firma

SAMSUNG SDI CO., LTD.

Land

🇰🇷 Südkorea