fig5

Figure 5. (A) CV curves at different scan rates for Co₃S₄/rGO-160-8; (B) the relationship between peak current and the square root of scan rate; (C) GCD curves for Co₃S₄/rGO-160-8 at different current densities; (D) Rate performance of different electrode materials; (E) Nyquist plots for different electrode materials; (F) Cycling performance of Co₃S₄/rGO-160-8 at 4 A·g^-1. CV: cyclic voltammetry; GCD: displays the galvanostatic charge-discharge; rGO:reduced graphene oxide.