Anodenaktivmaterial für eine Lithiumsekundärbatterie, Herstellungsverfahren dafür und Lithiumsekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4057391

Aktenzeichen

EP22161654

Anmeldetag

11. März 2022

Veröffentlichung

28. September 2022

Rechtsraum

EP

IPC

H01M4/583H01M4/133H01M4/134H01M4/1393H01M4/1395H01M4/38H01M4/02

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. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm 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