974285.fig.003a
(a)
974285.fig.003b
(b)
Figure 3: Electrochemical performance of HSCG. (a) CV profiles of the first and second cycles; (b) galvanostatic profiles at a current density of 50 mA g−1 with a cut-off potential between 5 mV and 2.5 V; (c) cycling profiles; (d) rate performance profile.