Figure 7From: Sulfur/graphitic hollow carbon sphere nano-composite as a cathode material for high-power lithium-sulfur batteryDischarge capacities and discharge–charge profiles of Li-S cell. (a) Discharge capacities and (b) discharge–charge profiles at the various current rates. Filled blue squares in (a) represent the discharge capacities of sulfur/carbon black nano-composite made by ball milling for comparison.Back to article page