fig5
From: Reversible sulfate-anion involved charge storage in layered MnO2 for aqueous symmetric batteries
Figure 5. Electrochemical performance of the MnO2//MnO2 symmetric aqueous battery. (A) CV curves of the MnO2//MnO2 symmetric cell within different voltage windows. (B) GCD curves of the MnO2//MnO2 symmetric cell within a voltage window of 0-1.8 V. (C) Specific capacities at different current densities. (D) Ragone plot comparing the energy and power densities of the MnO2//MnO2 symmetric cell with previously reported energy-storage devices[45]. (E) Cycling performance of the symmetric cell in 0.5 M Na2SO4 electrolyte.
