Electrochemical selective lithium extraction from spent LiFePO 4 cathode sheets and regeneration via C/MgF 2 synergistic coating modification

We propose an LFP regeneration strategy integrating electrochemical Li extraction with C/MgF 2 coating via in situ PVDF-derived HF conversion by MgO, yielding 99.64% pure Li 2 CO 3 and a cathode delivering 151.3 mA h g −1 , rivaling commercial materials.