| Abstract Scope |
Direct recycling of spent lithium-ion batteries has emerged as a promising strategy for reducing critical material waste and lowering the environmental footprint of battery manufacturing. In this work, we present a sustainable solvent-based separation and regeneration framework for recovering cathode materials from end-of-life lithium-ion batteries while preserving their structural integrity. Environmentally friendly solvents were employed to selectively remove binders and separate cathode powders from composite electrodes without extensive chemical decomposition. The recovered cathode materials were subsequently regenerated through relithiation and thermal treatment processes to restore electrochemical performance for reuse in new batteries. The effects of solvent selection and post-treatment conditions on material purity, morphology, crystal structure, and electrochemical behavior were systematically investigated. The results demonstrate that green solvent-assisted recovery can effectively produce high-quality regenerated cathode materials with promising cycling performance, highlighting the potential of direct recycling as a scalable and sustainable pathway for circular battery manufacturing. |