Fig. 7
From: Robust bifunctional oxygen electrocatalyst with a “rigid and flexible” structure for air-cathodes
a Open-circuit plots, the inset shows the photograph of a red LED powered by two home-made Zn–air batteries in series with Au-NWs/Ni6MnO8 as the air-cathode; b discharge polarization and power density curves; c discharge curves of Zn–air batteries at 5 mA cm−2; d long-term cycling performance at the charging and discharging current density of 10 mA cm−2. The enlarged 1st and last cycle discharge and charge voltage profiles of Zn–air batteries with e the Au-NWs/Au6MnO8 catalyst and f the Pt/C + RuO2 catalyst
