Upcycling spent lithium-ion battery cathodes into cobalt-polyphenol networks by DES dissolution and solvent-induced crystallization

Wang, Zeyu; Chen, Yu; Zhou, Fengyi; Qin, Rui; Tian, Yurun; Xue, Zhimin; Mu, Tiancheng

doi:10.1039/d4gc01036a

Green Chem.

2024

DOI: 10.1039/d4gc01036a

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Upcycling spent lithium-ion battery cathodes into cobalt-polyphenol networks by DES dissolution and solvent-induced crystallization

Zeyu Wang,

Yu Chen,

Fengyi Zhou

et al.

Abstract: The industrialization of recycling the spent lithium-ion batteries present promising opportunities and challenges. Herein, we developed a strategy by combination of task-specific deep eutectic solvent (3,4,5-trihydroxybenzoic acid: choline chloride) dissolution...

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Cited by 17 publications

References 32 publications

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Recycling Solid Electrolytes from All‐Solid‐State Lithium‐Ion Batteries by Using Deep Eutectic Solvents as Green Extractants

Chen,

Shi,

Zhang

et al. 2024

ChemSusChem

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All‐solid‐state lithium‐ion batteries (ASSLIBs) are attracting significant attention due to their high energy density, conductivity and safety. However, they are expected to generate substantial waste in the near future, leading to resource depletion and environmental pollution. Therefore, it is crucial to achieve green, mild and safe recovery of ASSLIBs. Here, we for the first time to use green deep eutectic solvents (DESs) to effectively recover solid‐state electrolytes (SSEs) from ASSLIBs at mild temperature. Results show that Li leaching efficiency can reach up to 87.5% with a superhigh Li/La selectivity of 1902 at a low temperature of 80 oC. Furthermore, 70 anti‐solvents are screened to recycle the dissolved SSEs from leachate and 12 anti‐solvents could precipitate SSEs from leachate at room temperature. This research opens new possibilities for recovering SSEs from ASSLIBs using the sustainable, cost‐effective and safe solvents.

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Recycling Solid Electrolytes from All‐Solid‐State Lithium‐Ion Batteries by Using Deep Eutectic Solvents as Green Extractants

Chen,

Shi,

Zhang

et al. 2024

ChemSusChem

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Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

Chen,

Shen,

Liu

et al. 2024

ChemSusChem

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Spent all‐solid‐state sodium‐ion batteries (ASIBs) containing toxic and precious metal would be produced significantly and lead to resource waste and environmental pollution as the wide application of ASIBs in the near future. Therefore, it is necessary to develop green strategy for recovery of ASIBs. Here, we propose a safe, mild and green strategy to recover toxic and precious metals from cathode/solid electrolyte of ASIBs by using natural low‐melting mixture solvents (LoMMSs) with high selectivity and high leaching efficiency. Natural LoMMSs are abundant, natural available, cheap, non‐flammable, biodegradable and biocompatible. Results show that natural LoMMSs could leach nearly 100% Na and achieve superhigh Na/Zr selectivity of up to 58 from ASIBs at mild temperature, outperforming the recycling efficiency and selectivity of lithium‐ion batteries cathode. More importantly, we find that water could be used as a green and low‐cost anti‐solvent to precipitate the extracted metal from the leachate with low‐energy consumption at room temperature. This work provides a cost‐effective, energy‐saving, mild, green strategy for the recovery of cathode/solid electrolyte from spent ASIBs with high safety and high selectivity.

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Morphology engineering of inorganic nanocrystals with deep eutectic solvents (DESs): Current developments and future prospects

Mahto,

Ali,

Barhoi

et al. 2025

Coordination Chemistry Reviews

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Upcycling spent lithium-ion battery cathodes into cobalt-polyphenol networks by DES dissolution and solvent-induced crystallization

Abstract: The industrialization of recycling the spent lithium-ion batteries present promising opportunities and challenges. Herein, we developed a strategy by combination of task-specific deep eutectic solvent (3,4,5-trihydroxybenzoic acid: choline chloride) dissolution...

Cited by 17 publications

References 32 publications

Recycling Solid Electrolytes from All‐Solid‐State Lithium‐Ion Batteries by Using Deep Eutectic Solvents as Green Extractants

Recycling Solid Electrolytes from All‐Solid‐State Lithium‐Ion Batteries by Using Deep Eutectic Solvents as Green Extractants

Natural Low‐Melting Mixture Solvents for Green Recovery of Spent All‐Solid‐State Sodium‐Ion Batteries with Superior Efficiency over Lithium‐Ion Batteries

Morphology engineering of inorganic nanocrystals with deep eutectic solvents (DESs): Current developments and future prospects

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