fig4

Figure 4. (A) Galvanostatic charge/discharge profiles of Li-S cells with MXene-decorated and Au QDs@MXene-decorated separators, and (B) corresponding cycling performance at 0.2 C (E/S ratio of 6.0 μL mg^-1). (C) Cycling performance comparison for the two cells at 0.5 C. (D) Rate performance of S cathodes with different separators. (E) Long-term cycling performance at 1 C. (F) EIS comparison of Li-S cells with MXene-decorated and Au QDs@MXene-decorated separators after the 100th cycle at 0.5 C. (G) XPS spectra of S 2p for the cycled Li anodes with MXene-decorated and Au QDs@MXene-decorated separators.