Negativelektrode mit Siliciumbasiertem Negativelektrodenaktivmaterial und Sekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4210126

Aktenzeichen

EP23150418

Anmeldetag

5. Januar 2023

Veröffentlichung

7. August 2024

Erteilung

7. August 2024

Rechtsraum

EP

IPC

H01M4/04H01M4/134H01M4/1395H01M4/38H01M4/02

Abstract

Provided are a negative electrode including a silicon-based negative electrode active material and a secondary battery including the same. According to an exemplary embodiment of the present invention, a negative electrode for a secondary battery including: a current collector and a negative electrode active material layer including a plurality of silicon-based active material particles, which is positioned on the current collector may be provided, wherein the following Relation is satisfied: 0.01≤A−B≤0.81 wherein A is an average value of Raman spectrum peak intensity ratios Ia/Ib for 50 silicon-based active material particles randomly selected in the negative electrode active material layer, B is an average value of values excluding top 10 values and bottom 10 values, for each Raman spectrum peak intensity ratio Ia/Ib value for the 50 silicon-based active material particles, Ia is a peak intensity at 515115 cm^-1, and Ib is a peak intensity at 470130 cm^-1.

Anmelder

Firma

SK On Co., Ltd.

Land

🇰🇷 Südkorea

Fachgebiete