Elektrolytlösung für eine Sekundärbatterie mit Wasserfreiem Elektrolyt und Sekundärbatterie mit Wasserfreiem Elektrolyt damit

Details

Veröffentlichungs-Nr.

EP4712192

Anmeldetag

6. Juni 2024

Veröffentlichung

12. Dezember 2024

Rechtsraum

EP

Abstract

The present invention provides a nonaqueous electrolyte solution which, when used in a nonaqueous electrolyte secondary battery containing Si and/or silicon oxide as a negative electrode active material, can exhibit at least one of improvement of a capacity retention rate after cycles and reduction of the amount of generated gas during high temperature storage in the nonaqueous electrolyte secondary battery. A nonaqueous electrolyte solution contains (I) a nonaqueous organic solvent; (II) a solute that is an ionic salt; and (III) a compound represented by formula (1) or a compound represented by formula (3). (3): PO(OR4)y(OR5)3-y. In formula (1), for example, each R1 is independently a hydrogen atom, a halogen atom, a linear alkyl group having 1-12 carbon atoms or a branched alkyl group having 3-12 carbon atoms. In formula (3), each R4 independently represents an alkenyl group or an alkynyl group; R5 represents an alkyl group or an aryl group; and y is an integer of 2-3.

Anmelder

Firma

Central Glass Co., Ltd.

Land

🇯🇵 Japan