Sekundärbatterie und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4723217

Anmeldetag

8. Januar 2026

Veröffentlichung

8. April 2026

Rechtsraum

EP

Abstract

A secondary battery, including a negative electrode plate and an electrolyte, where the negative electrode plate includes a negative electrode active material layer. The negative electrode active material layer includes graphite and a silicon-carbon material, and an average sphericity of the silicon-carbon material is 0.81 to 0.95. The electrolyte includes ethylene carbonate, propylene carbonate, ethyl propionate and propyl propionate, where based on a mass of the electrolyte, a mass percentage of the ethylene carbonate is a%, a mass percentage of the propylene carbonate is b%, a mass percentage of the ethyl propionate is c%, a mass percentage of the propyl propionate is d%, and (a+b)/(c+d) is in a range of 0.23 to 1.51.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China