Fig. 3From: Magnet anode enhances extracellular electron transfer and enrichment of exoelectrogenic bacteria in bioelectrochemical systemsNyquist plots of MFCs (a), the inset is the enlarged curves of the low current density region. The internal resistances of MFCs (b) analyzed by fitting to the equivalent circuit: Rs (Rct1Q1) (Rct2Q2), where Rs, Rct1, and Rct2 represent ohmic resistance, charge transfer resistance, and finite diffusion resistance, respectivelyBack to article page