Sekundärbatterie, Elektrische Vorrichtung und Herstellungsverfahren für Sekundärbatterie

Details

Veröffentlichungs-Nr.

EP4773200

Anmeldetag

7. Januar 2025

Veröffentlichung

9. Oktober 2025

Rechtsraum

EP

Abstract

A secondary battery includes a negative electrode plate, where the negative electrode plate includes a current collector and a first active material layer, the first active material layer is disposed on at least one surface of the current collector, the first active material layer includes a silicon-based material and a solid-state electrolyte, and the solid-state electrolyte is at least partially bound to a surface of silicon in the silicon-based material. In the secondary battery and an electric device, the solid-state electrolyte is at least partially bound to the surface of silicon in the silicon-based material, mitigating the issue of silicon-based material swelling and enhancing the structural integrity and stability of the negative electrode plate. In addition, as compared to a silicon-based material coated with a binder in the prior art, the use of a solid-state electrolyte can improve the lithium intercalation capability of the silicon-based material and increase the ion conduction rate in the negative electrode plate, thus mitigating the issue of deteriorated kinetic performance of the secondary battery caused by coating a binder on the silicon-based material.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China