Fig. 6: Electrochemical performances of the Zn||Pt/C/IrO2 full cells with NP Zn and Zn powder anodes.

a Schematic of the Zn-air coin cell used in this study. b Discharging and charging polarization curves and c the corresponding power density curves for discharging. d Voltage vs. time curves at 10 mA/cm2 and 10% DoD, where the insets highlight those during the 30–40th hours.