Fig. 4: Electrocatalytic performance of Fe,W-N-C and other reference catalysts.
From: Ten thousand hour stable zinc air batteries via Fe and W dual atom sites
a LSV curves without iR correction for Fe,W-N-C, Fe,WC-N-C, Fe-N-C, W-N-C, WC-N-C, and commercial 20 wt% Pt/C catalysts in oxygen-saturated 0.1 M KOH electrolyte (25 ± 1 °C, pH=13.0 ± 0.5, the resistance of the solution was 45 ± 5 Ω) at 1600 rpm with scan rate of 5 mV s−1. b Onset potential (Eonset), half-wave potential (E1/2) and kinetic current density (JK) (0.82 V, V versus RHE) for the different catalysts. c ORR polarization curves of the Fe,W-N-C catalyst at different rotating speeds. d Koutecky-Levich plots and electron transfer numbers at different potentials of the Fe,W-N-C catalyst. e H2O2 yield and electron transfer number of Fe,W-N-C and Pt/C catalysts measured by RRDE. f Chronoamperometric response curves for Fe,W-N-C and Pt/C catalysts.
