Anodenaktivmaterial für eine Lithiumsekundärbatterie, Herstellungsverfahren dafür und Lithiumsekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4057384

Aktenzeichen

EP22161651

Anmeldetag

11. März 2022

Veröffentlichung

25. September 2024

Erteilung

25. September 2024

Rechtsraum

EP

IPC

H01M4/133H01M4/134H01M4/1393H01M4/1395H01M4/38H01M4/583

Abstract

An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. A peak intensity ratio in a Raman spectrum of silicon defined as I(515)/I(480) is 1.2 or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.

Anmelder

Firma

SK On Co., Ltd.

Land

🇰🇷 Südkorea

Fachgebiete