Verfahren zur Herstellung von FEPO4 aus Lithiumeisenphosphat-Abfallkathode

Details

Veröffentlichungs-Nr.

EP4818115

Anmeldetag

3. Dezember 2025

Veröffentlichung

11. Juni 2026

Rechtsraum

EP

Abstract

The present invention relates to a method of preparing FePO<4> from waste lithium iron phosphate cathode. More particularly, the present invention relates to a method of preparing FePO<4> from waste lithium iron phosphate cathode, including step (a) of preparing a hydrogen peroxide mixture by adding an aqueous hydrogen peroxide solution to a solution containing Fe and P components; step (b) of heating the hydrogen peroxide mixture; step (c) of synthesizing FePO<4> by adding an aqueous ammonia solution to the heated hydrogen peroxide mixture; step (d) of separating the synthesized FePO<4>; and step (e) of washing FePO<4> with an acidic washing solution having a pH of 1.3 to 1. 6. According to the present invention, the present invention has an effect of providing a method of preparing FePO<4> from waste lithium iron phosphate cathode, characterized in that impurities derived from waste lithium iron phosphate cathode material are easily removed, and the generation of new by-products is suppressed.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea