Fig. 4: Zn–air battery performance evaluation. | Nature Communications

Fig. 4: Zn–air battery performance evaluation.

From: d-Orbital steered active sites through ligand editing on heterometal imidazole frameworks for rechargeable zinc-air battery

Fig. 4

a Open-circuit voltage curves, b charge and discharge polarization curves, and c corresponding power density plots for Zn–air battery prepared with BHZ-48 or Pt/C + RuO2 electrodes. d Galvanostatic cycling stability of Zn–air battery prepared with BHZ-48 electrode, and e the Pt/C + RuO2 electrode at a current density of 15 mA cm−2. f Comparison of key performance parameters for BHZ-48 and Pt/C + RuO2 electrodes. A: current density; B: power density; C: lifespan, D: cumulative energy density; E: discharge voltage. g Charge and discharge polarization curves, inset: corresponding discharge voltages and voltage gaps. h Nyquist plots of the flexible Zn–air battery prepared using the BHZ-48 electrode under different bending angles. i Alternating charging mode test, (I) 10 mA cm−2, 60 min, (II) 20 mA cm−2, 30 min, (III) 30 mA cm−2, 20 min, (IV) 40 mA cm−2, 15 min. Inset in i: average discharging voltage variation.

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