Co-leaching of Li, Fe, Al, and Cu from active materials of LFP batteries

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Co-leaching of the cathode and anode materials of lithium iron phosphate (LFP) batteries was studied. It was determined that the nature of mineral acid (nitric, sulfuric, hydrochloric) affects the degree of leaching of Li, Fe, Al, and Cu. Hydrochloric acid was chosen as the most suitable leaching agent. The effect of the following parameters of the leaching of active materials was investigated: process duration, temperature, hydrochloric acid concentration, and solid : liquid ratio. For complete leaching of copper, hydrogen peroxide was used as an oxidizing agent. The conditions for the most complete extraction of target elements were found to be 25°C, 2 h, 2 M hydrochloric acid solution, 0.05 M H2O2 solution, solid : liquid ratio 1 : 50. The possibility of sufficiently complete leaching of the main elements from spent LFP batteries at room temperature was demonstrated.

作者简介

A. Salomatin

Kurnakov Institute of General and Inorganic Chemistry RAS; National Research University Higher School of Economics

Email: yz@igic.ras.ru
俄罗斯联邦, Moscow, 119071; Moscow, 109028

I. Zinov’eva

Kurnakov Institute of General and Inorganic Chemistry RAS

Email: yz@igic.ras.ru
俄罗斯联邦, Moscow, 119071

Yu. Zakhodyaeva

Kurnakov Institute of General and Inorganic Chemistry RAS

编辑信件的主要联系方式.
Email: yz@igic.ras.ru
俄罗斯联邦, Moscow, 119071

A. Voshkin

Kurnakov Institute of General and Inorganic Chemistry RAS

Email: yz@igic.ras.ru
俄罗斯联邦, Moscow, 119071

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