Lithiumsekundärbatterie

Details

Veröffentlichungs-Nr.

EP4738516

Anmeldetag

22. Juli 2024

Veröffentlichung

30. Januar 2025

Rechtsraum

EP

Abstract

A lithium secondary battery according to embodiments of the present invention includes: an electrode assembly including a cathode containing a lithium-transition metal oxide in which a molar ratio of lithium to all metal elements is greater than 1, and an anode disposed opposite the cathode; and an electrolyte solution that impregnates the electrode assembly and includes a fluorine-based additive having a terminal difluorophosphite group (-OPF<2>). By using the fluorine-based additive, side reactions of the electrolyte solution may be suppressed, and the high-voltage charging stability of the cathode active material may be improved.

Anmelder

Firma

SK On Co., Ltd.

Land

🇰🇷 Südkorea