Efficient Regeneration of Used Lithium Iron Phosphate Cathode Materials Using Dispersants

With advancements in new energy vehicle technologies and energy storage solutions, lithium iron phosphate (LFP) batteries have emerged as a prominent category of lithium‐based energy storage systems. However, significant challenges persist in the efficient recycling and structural restoration of spent LFP cathode materials. A key strategy for enhancing recycling efficiency and material value involves the use of dispersants during the regeneration process of decommissioned LFP cathodes. The incorporation of dispersant agents into the recovery workflow improves particle dispersion uniformity, optimizes chemical reactions, and facilitates the reconstruction of cathode crystal structures. This approach not only streamlines the recycling process but also enhances the economic feasibility of reusing degraded LFP materials in sustainable energy systems. It significantly improves the uniformity of particle distribution in reclaimed materials, thereby enhancing their electrochemical performance. Experimental results from recycled LFP demonstrate a specific capacity of 159 mAh/g at 0.05 C, achieving 98.76% of the performance compared to commercial counterparts, and show a 92.92% capacity retention after 200 charge–discharge cycles at 1 C. This method improves both material recovery efficiency and operational durability, establishing a promising pathway for economically sustainable battery recycling.