fig6

Figure 6. Electrochemical performance of Li||LFP cells with PP, PEI and PEI-EDA separators. (A) Cycling performance at the current density of 5 C; (B) Rate performance; (C) EIS at different times; (D) Cycling performance at 60 °C; (E) Cycling performance of cells with high loading; (F) Cycling performance of Li||PEI-EDA||LFP pouch cell; (G) Comparison of electrochemical performances between this work and other reported separators. LFP: LiFePO₄; PEI-EDA: ethylenediamine grafting polyetherimide; PEI: polyetherimide; PP: polypropylene; EIS: electrochemical impedance spectroscopy.