Lithiumsekundärbatterie mit Negativem Elektrodenaktivmaterial auf Si-Basis

Details

Veröffentlichungs-Nr.

EP4738594

Anmeldetag

31. März 2023

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

IPC

H01M50/494(ASAHI CHEMICAL IND et al.)

Abstract

Provided is a lithium secondary battery with reduced Hi-pot defects and improved capacity retention rate. According to one aspect of the present disclosure, there is provided a lithium secondary battery including an anode, a cathode, and a separator interposed between the anode and the cathode, in which the anode includes a Si-based anode active material, the separator includes a separator substrate having a plurality of pores and including a polyolefin resin, the polyolefin resin has a polydispersity index (PDI) of 2.5 to 4.2, an average pore size of 20 to 40 nm, and a maximum pore size of 50 nm or less.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea

Fachgebiete