fig4
![Protective behavior of phosphonate-functionalized imidazolium ionic liquid and its impact on the Li-ion battery performance](https://image.oaes.cc/b9334d41-8a97-4f21-ba5f-b922875bee8f/em3033.fig.4.jpg)
Figure 4. AC impedance spectra and chrono-amperometry curves of the electrolyte without PFIL (A) and the electrolyte with PFIL (B).
Figure 4. AC impedance spectra and chrono-amperometry curves of the electrolyte without PFIL (A) and the electrolyte with PFIL (B).
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