Elektrolyt und Herstellungsverfahren Dafür, Lithiumbatterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4769629

Anmeldetag

8. September 2025

Veröffentlichung

23. April 2026

Rechtsraum

EP

Abstract

The present application provides an electrolyte, a preparation method therefor, a lithium battery, and an electric device. The electrolyte includes a lithium salt, a solvent, and a film-forming additive, where the solvent includes a low-viscosity solvent having a viscosity of 0.50 mPa·s or less, and the electrolyte meets 0.35≤100∗PD∗AddW≤1.30, where based on the mass of the solvent being 100%, W is the mass fraction of the low-viscosity solvent in the solvent, in units of wt%, and A_dd is the ratio of the mass of the film-forming additive in the electrolyte to the total mass of the lithium salt and the solvent. For positive electrode sheets with different compaction densities, the contents of the low-viscosity solvent and the film-forming additive in the corresponding electrolyte can be determined through calculation, thereby obtaining a matched electrolyte. After a lithium battery is prepared using the positive electrode sheet and the matched electrolyte, the electrolyte exhibits good wettability on the positive electrode sheet, and the lithium battery also demonstrates excellent cycling stability.

Anmelder

Firma

Eve Power Co., Ltd.

Land

🇨🇳 China