The application of deep eutectic solvents (DESs) to dissolve metal oxides in lithium-ion batteries (LIBs) recycling represents a green technological alternative to the mineral acids employed in hydrometallurgical recycling processes. However, DESs are much more expensive than mineral acids and must be reused to ensure economic feasibility of LIB recycling. To evaluate DES reusability, the role of the choline chloride-ethylene glycol DES decomposition products on metal oxides dissolution was investigated. The temperatures generally applied to carry on this DES leaching induced the formation of decomposition products that ultimately improved the ability to dissolve LIB metal oxides. The characterization of DES decomposition products revealed that the improved metal dissolution was mainly determined by the formation of Cl3 - , which was proposed to play a pivotal role in the oxidative dissolution of LIB metal oxides.

Decomposition of Deep Eutectic Solvent Aids Metals Extraction in Lithium-Ion Batteries Recycling / Schiavi, PIER GIORGIO; Altimari, Pietro; Sturabotti, Elisa; Marrani, Andrea Giacomo; Simonetti, Giulia; Pagnanelli, Francesca. - In: CHEMSUSCHEM. - ISSN 1864-5631. - 15:18(2022), pp. 1-9. [10.1002/cssc.202200966]

Decomposition of Deep Eutectic Solvent Aids Metals Extraction in Lithium-Ion Batteries Recycling

Pier Giorgio Schiavi;Pietro Altimari;Elisa Sturabotti;Andrea Giacomo Marrani;Giulia Simonetti;Francesca Pagnanelli
2022

Abstract

The application of deep eutectic solvents (DESs) to dissolve metal oxides in lithium-ion batteries (LIBs) recycling represents a green technological alternative to the mineral acids employed in hydrometallurgical recycling processes. However, DESs are much more expensive than mineral acids and must be reused to ensure economic feasibility of LIB recycling. To evaluate DES reusability, the role of the choline chloride-ethylene glycol DES decomposition products on metal oxides dissolution was investigated. The temperatures generally applied to carry on this DES leaching induced the formation of decomposition products that ultimately improved the ability to dissolve LIB metal oxides. The characterization of DES decomposition products revealed that the improved metal dissolution was mainly determined by the formation of Cl3 - , which was proposed to play a pivotal role in the oxidative dissolution of LIB metal oxides.
2022
deep eutectic solvents; extraction; lithium-ion batteries; recycling; waste valorization
01 Pubblicazione su rivista::01a Articolo in rivista
Decomposition of Deep Eutectic Solvent Aids Metals Extraction in Lithium-Ion Batteries Recycling / Schiavi, PIER GIORGIO; Altimari, Pietro; Sturabotti, Elisa; Marrani, Andrea Giacomo; Simonetti, Giulia; Pagnanelli, Francesca. - In: CHEMSUSCHEM. - ISSN 1864-5631. - 15:18(2022), pp. 1-9. [10.1002/cssc.202200966]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1652439
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