fig4

Figure 4. (A) Cross-sectional SEM image of the aCoP@CNTs modified separator; (B) CV curves of the cells with different separators under scan rate of 0.1 mV s^-1; (C) cycling performance of the Li-S cells with different separators at 0.2 C; (D) discharge/charge profiles of cells with different separators and the corresponding discharge initial potential (E); (F) the histogram of polarization potential and Q_L/Q_H value derived from charge/discharge profiles; (G) the rate performance and long-term cycling stability at 1C (H) of the batteries with different separators.