Negativelektrode einer Sekundärbatterie, Herstellungsverfahren für Negativelektrode und Sekundärbatterie mit Negativelektrode

Details

Veröffentlichungs-Nr.

EP4718517

Anmeldetag

10. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

H01M4/133(天津爱敏特电池材料有限公司)

Abstract

Provided is a technique to suppress a reduction in a capacity maintenance rate. In the negative electrode disclosed herein, a negative electrode active material layer contains first Si-containing particles and second Si-containing particles. When an expansion rate S2 of the second Si-containing particles is treated as 1, an expansion rate S1 of the first Si-containing particles is more than 0.3 and not more than 0.9. The first Si-containing particles and the second Si-containing particles include LiF coating layers. A second peak intensity ratio of the second Si-containing particles is larger than the first peak intensity ratio of the first Si-containing particles.

Anmelder

Firma

Prime Planet Energy & Solutions, Inc.

Land

🇯🇵 Japan