Elektrochemische Vorrichtung und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4738503

Anmeldetag

30. Juni 2023

Veröffentlichung

2. Januar 2025

Rechtsraum

EP

Abstract

The present application relates to an electrochemical device and an electronic device. The electrochemical device of the present application includes a positive electrode, a negative electrode, and an electrolyte. The electrolyte includes an additive, where the additive includes a first additive M, and the first additive M is at least one selected from the group consisting of a fluorinated carbonate compound and a compound containing a sulfur-oxygen double bond. The negative electrode includes a negative electrode active material layer, where the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material includes a hard carbon material. The electrochemical device of the present application has improved high-temperature cycling performance, low-temperature performance, and rate performance while maintaining the specific capacity of the negative electrode active material.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China