Fig. 5: Performances of ZABs with Fe,W-N-C air cathode and in situ XAS characterizations. | Nature Communications

Fig. 5: Performances of ZABs with Fe,W-N-C air cathode and in situ XAS characterizations.

From: Ten thousand hour stable zinc air batteries via Fe and W dual atom sites

Fig. 5: Performances of ZABs with Fe,W-N-C air cathode and in situ XAS characterizations.

a Galvanostatic discharge/charge cycling stability tests for liquid-state ZAB based on Fe,W-N-C air cathode at a current density of 5 mA cm−2. b Discharge polarization and power density plots of Fe,W-N-C and Pt/C-IrO2 based ZABs. c Cycling stability test of the flexible solid-state ZAB with Fe,W-N-C air cathode at a current density of 5 mA cm−2, and the insets are digital photos of the ZAB at flat/bent/revert flat states. d Simplified schematic illustration of the solid-state ZAB during the in situ XAS tests. e Fe K-edge XANES spectra of Fe,W-N-C based ZAB during the discharging and charging processes at different current densities. f Fe K-edge XANES spectra of Fe,W-N-C based ZAB in resting state after several discharge/charge cycles.

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