Rapid room-temperature repair of spent lithium iron phosphate via redox mediators

A rapid room-temperature repair method for spent LiFePO₄ (LFP) powders and electrodes is presented, achieving restoration within 10 minutes. The process facilitates lithiation kinetics through redox reactions between iodide and triiodide ions and supports reuse. This clean, low-energy method provides promising technology for efficiently recycling LFP cathodes.