Anode für Sekundärbatterie und Lithiumsekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4769531

Anmeldetag

19. Dezember 2025

Veröffentlichung

1. Juli 2026

Rechtsraum

EP

Abstract

An anode for a secondary battery comprising: an anode current collector; and an anode active material coating comprising: a first anode active material layer disposed on the anode current collector and comprising a first anode active material, and a second anode active material layer disposed on the first anode active material layer and comprising a second anode active material, wherein the first anode active material comprises first silicon-based active material particles, the second anode active material comprises second silicon-based active material particles, wherein the second anode active material layer comprises a silicon-containing active material in a greater amount than the first anode active material layer, wherein a ratio of the content of the first silicon-based active material particles in the total weight of the first anode active material to the sum of the contents of the first silicon-based active material particles in the total weight of the first anode active material and the second silicon-based active material particles in the total weight of the second anode active material is greater than 0 and less than or equal to 0.1 and wherein a mass loading of the second anode active material layer is greater than a mass loading of the first anode active material layer.

Anmelder

Firma

SK On Co., Ltd.

Land

🇰🇷 Südkorea