fig4

Figure 4. (A) UV-vis spectra of the supernatants (inset: digital images of blank Li₂S₆, Li₂S₆-MXene, and Li₂S₆-ZIF-L/MXene solutions, respectively). (B) CV curves of symmetric cells. (C) The first CV curves of the PP, MXene@PP, and ZIF-L/MXene@PP-based Li-S cells. Tafel plots of the (D) cathodic peak and (E) anodic peak derived from the CV curves. (F) CV curves of ZIF-L/MXene@PP-based Li-S cell at 0.1, 0.2, 0.3, 0.4, and 0.5 mV s⁻¹, respectively. Plots of peak current densities for (G) peak I, (H) peak II, and (I) peak III vs. the square root of the scan rate.