Abstract Separation of cathode materials from the current collector remains a challenging task for the recycling of both spent lithium-ion batteries and cathode scraps. Dissolving the organic binder polyvinylidene difluoride (PVDF) with an organic solvent to recover both cathode materials and Al foils is an efficient and promising method. However, the use of toxic solvents limits their practical application in recycling large amounts of cathode scraps generated during the manufacturing process. Cyrene, a bioderived green solvent, is proposed here for a solvent-based separation process. This study investigated a closed-loop recovery process to reclaim cathode materials, Al foils, and PVDF binder from cathode scraps. Additionally, the reuse of the Cyrene solvent led to a circular recycling process. The Cyrene-based separation process embraces a sustainable electrode recovery and reuse platform and paves the way for battery recycling.

中文翻译：

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通过基于 Cyrene 的分离可持续回收阴极废料

摘要 从集电器中分离正极材料对于废旧锂离子电池和正极废料的回收来说仍然是一项具有挑战性的任务。用有机溶剂溶解有机粘合剂聚偏二氟乙烯 (PVDF) 以回收正极材料和铝箔是一种有效且有前景的方法。然而，有毒溶剂的使用限制了它们在回收制造过程中产生的大量阴极废料方面的实际应用。Cyrene 是一种生物衍生的绿色溶剂，这里建议用于基于溶剂的分离过程。本研究调查了从阴极废料中回收阴极材料、铝箔和 PVDF 粘合剂的闭环回收过程。此外，Cyrene 溶剂的再利用导致循环回收过程。