fig4

Figure 4. Electrochemical properties of separators: (A) Temperature dependence of ionic conductivity of PP, PP-PEO_60w (EO:Li⁺ = 8:1), PP-PCL_5w and PP-blended PEO_60w/PCL_5w separators; (B) Chronoamperometry profile of Li/PP-blended PEO_60w/PCL_5w separator-LiPF₆/Li symmetric battery under a polarization potential of 10 mV and the EIS before and after the polarization (insert); (C) EIS curves of PP and PP-blended PEO_60w/PCL_5w separators; (D) Electrochemical stability windows of PP, PP-PEO_60w (EO:Li⁺ = 8:1) and PEO_60w/PCL_5w separators.