Figure 6

AEMFC performance evaluation. (a) I–V curves of AEMFCs containing Fe-pyPANI-K 700 °C and Pt/C cathodes. The loading of the Fe-pyPANI-K 700 °C catalyst was changed from 1 mg cm−2 to 3 mg cm−2, and it was 0.5 mg cm−2 for Pt/C (b) I–V curves of AEMFCs with Fe-pyPANI-K 700 °C and acid leached-Fe-pyPANI-K 700 °C cathodes with loadings of 1 mg cm−2 and 2 mg cm−2.