fig3

Figure 3. Electrochemical performance of the MnO₂-Zn and MnO₂/VOSO₄-Zn batteries: (A) Cycling performance at 1 mAh cm^-2, (B and C) charge and discharge curves, and (D) cyclic performance at 5 mAh cm^-2 and 10 mA cm^-2, (E and F) discharge curves at 5 mAh cm^-2 and various current densities, and (G) cyclic performance at 10 mAh cm^-2 and 10 mA cm^-2.