Determination of internal resistance of two types of microbial fuel cells by the polarization curve and impedance spectroscopy methods

Electricity generation in a microbial fuel cell using yogurt wastewater under alkaline conditions

“…The change of the total internal resistances based on the EIS measurements was consistent with that determined by the polarization curves, but with some differences between these methods. 32 The ohmic resistance in the MFC had the same order as the total internal resistance as follows: 73 AE 8 U < 93 AE 10 U < 136 AE 15 U < 152 AE 15 U < 265 AE 25 U with increase in COD concentration of the feed from 1.0 AE 0.1, 2.0 AE 0.1, 5.0 AE 0.5, 8.0 AE 0.6, to 13.0 AE 1.0 g L À1 . The charge transfer resistances in the MFC were increased from 28 AE 4 U to 114 AE 15 U with increase in COD concentration of the feed from 1.0 AE 0.1 to 13.0 AE 1.0 g L À1 .…”