Figure 4

Performance of the sulfur aerogels in lithium sulfur batteries.
(a) Total areal discharge capacity vs. cycle number at 0.1 C for different electrode mass-loading. (b) Inset: Specific discharge capacity (solid line) and coulombic efficiency (dashed line) vs. cycle number at 0.1 C. (c) Galvanostatic voltage profiles at 0.1 C. (d) Rate capability test performed between 0.1–2 C.