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Hydration Equilibrium-controlled Cation-Anion Coordination Competition for Precise Recovery of All Valuable Metals from Spent Lithium-ion Batteries
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PRE
AI
M
J
S
Y
Q
C
Z
D
W
王
Z
DOI：10.1039/D5EE05276A.png)
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Abstract
En 中文
The selective recovery of metals from spent lithium-ion batteries (LIBs); particularly from Ni-based ternary (NCM) cathode materials; is a significant challenge due to their complex elemental composition. Herein; we present a novel; sustainable method that addresses the limitations of traditional techniques; which often rely on extractants or precipitants for metal separation. By precisely controlling temperature and H2O content in deep eutectic solvents (DESs); we achieve efficient and selective recovery of Ni; Li; Co; and Mn; with recovery efficiencies >94% and product purities >97%; all without the need for additional chemicals. Additionally; the used DES can be regenerated by evaporating H2O and replenishing reagents; enhancing both sustainability and cost-effectiveness. A successful scale-up in a 10 L reaction unit validates the industrial feasibility of the process. This work presents a major advancement in the sustainable recycling of spent LIBs; offering a practical and eco-friendly solution for efficient multi-metal separation and resource recovery.
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30.8
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6.9K
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