Recycelbare Organische Liganden zur Selektiven Extraktion von Kobalt in Lithium-Ionen-Batterien

Details

Veröffentlichungs-Nr.

EP4775697

Anmeldetag

10. Januar 2025

Veröffentlichung

15. Juli 2026

Rechtsraum

EP

Abstract

The present invention relates to a method for selectively recovering cobalt from lithium ion batteries (LIBs) which comprises: (i) providing a black mass containing metals; (ii) leaching the black mass obtaining a first solution containing said metals; (iii) basifying the first solution to obtain a precipitate comprising cobalt; (iv) dissolving the precipitate with concentrated HCl, HBr, or HI, obtaining a second solution which is evaporated to obtain a crude product comprising CoX<2> (with X being Cl, Br, or I), (v) forming an organometallic cobalt complex by contacting the crude product with an organic ligand of formula (I) in the presence of a mixture of solvents; and (vi) separating the cobalt and the chelating agent from the organometallic complex formed by means of liquid-liquid extraction. Furthermore, the invention relates to the use of an organic ligand of formula (I) for recovering cobalt from LIB.

Anmelder

Firmen

Universidad del País Vasco/Euskal Herriko Unibertsitatea
Innovation Tree S.L.

Land

🇪🇸 Spanien