Negativelektrode einer Sekundärbatterie, Herstellungsverfahren für Negativelektrode und Sekundärbatterie mit Negativelektrode

Details

Veröffentlichungs-Nr.

EP4718516

Anmeldetag

8. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

(SAKAMOTO JUNICHI et al.)

Abstract

Provided is a technique to suppress a swell of the negative electrode. In the negative electrode disclosed herein, a negative electrode active material layer includes a first layer at a negative electrode current collector side and a second layer at a surface layer side. The first layer contains first Si-containing particles. The second layer contains second Si-containing particles. A Si content rate of the second Si-containing particles is smaller than a Si content rate of the first Si-containing particles. Each of the first Si-containing particles and the second Si-containing particles include a LiF coating layer. A second peak intensity ratio relating to a LiF of the second Si-containing particles is smaller than a first peak intensity ratio relating to the LiF of the first Si-containing particles. A difference between the first peak intensity ratio and the second peak intensity ratio is 0.050 to 1.00.

Anmelder

Firma

Prime Planet Energy & Solutions, Inc.

Land

🇯🇵 Japan