Verfahren zur Rückgewinnung von Positivelektrodenaktivmaterial

Details

Veröffentlichungs-Nr.

EP4769647

Anmeldetag

5. Juni 2025

Veröffentlichung

11. Dezember 2025

Rechtsraum

EP

IPC

H01M10/54

Abstract

The present invention relates to a method for recovering a positive electrode active material, and the method for recovering the positive electrode active material according to the present invention includes a first step of immersing a positive electrode, including a positive electrode current collector and a positive electrode composite layer containing a positive electrode active material and a binder, in an organic solvent capable of dissolving the binder to separate the positive electrode composite layer and the positive electrode current collector; a second step of removing the positive electrode current collector to obtain a first treatment solution including the positive electrode active material, the binder, and the organic solvent; a third step of removing at least some of the organic solvent included in the first treatment solution; a fourth step of precipitating the binder by adding water to the first treatment solution and separating the precipitated binder to obtain a second treatment solution including the positive electrode active material, the water, and the organic solvent; a fifth step of separating the positive electrode active material from the second treatment solution to obtain a third treatment solution including the water and the organic solvent; and a sixth step of removing the water from the third treatment solution and recovering the organic solvent.

Anmelder

Firma

LG ENERGY SOLUTION, LTD.

Land

🇰🇷 Südkorea

Fachgebiete