Figure 7
(a) CVs at a scan rate of 2 mV s−1 and (b) GCD profiles at 60 mA g−1 for the anode (blue), the cathode (red) and the full cell (black) in 3 M ZnSO4 aqueous electrolytes. (c) Discharge curves of the cell at different rates. (d) Cycle life tests at the current density of 300 mA g−1.
