Direct Recycling of Li-ion Batteries: Challenges and Solutions for Sustainable EV Future

With the exponential expansion of electric vehicles (EVs), the disposal of Li-ion batteries (LIBs) is poised to increase significantly in the coming years. Effective recycling of LIBs is essential to address environmental concerns and tap into their economic value. Direct recycling has recently emerged as a promising solution at the laboratory level, offering significant environmental benefits and economic viability compared to pyrometallurgical and hydrometallurgical recycling methods. However, its commercialization has not been realized in terms of financial feasibility. This perspective comprehensively analyzes the obstacles that impede the practical implementation of direct recycling, including disassembling, sorting, separation and technological limitations. Furthermore, potential solutions are suggested to tackle these challenges in the short term. The need for long-term, collaborative endeavors among manufacturers, battery producers, and recycling companies is outlined to advance fully automated recycling of spent LIBs. Lastly, a smart direct recycling framework is proposed to achieve the full life cycle sustainability of LIBs.\n\nEVs: Electric vehicles\nLIBs: Li-ion batteries\nPyrometallurgical: Pyrometallurgical recycling method\nHydrometallurgical: Hydrometallurgical recycling method