Graphene/Sulfur@Graphene Composite Structure Material for a Lithium-Sulfur Battery Cathode

Figure 7

Cycling performance of Li-S cells with G/S-G, G/S monolayer, and S monolayer cathodes at (a) 0.1, (b) 0.1, (c) 0.2, and (d) 0.5 C. (e, f) Galvanostatic discharge-charge curves at different C rates in the 1.5–2.8 V voltage window.

(a)

(b)

(c)

(d)

(e)

(f)