fig8
![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.8.jpg)
Figure 8. Cycling performance and coulombic efficiency of Li||NCM811 cells with the electrolyte without PFIL and the electrolyte with PFIL (A) with the first four cycles at 0.1 C and following cycles at 0.5 C; Nyquist plots of Li||NCM811 cells cycled in the electrolyte without PFIL (B) and the electrolyte with PFIL (C), respectively.