Highlights
Suitable bioelectrochemical application of ceramic clays with varying Fe2O3 content.
5.75% of Fe2O3 and 1100 °C of sintering temperature allow MFCs to reach 1.045 mW.
The Fe2O3 content mitigates the effect of porosity features on the MFC power output.
Good stability of the MFCs working during 65 days in continuous mode.