Impedance Study MFC Set up Anode Cathode References Anode Impedance Biofilm growth Two chamber Bare Graphite felt Bare Graphite felt [44] Biofilm growth Single/ Air-cathode Carbon felt (porous) Carbon felt (porous) [46] Impact of initial biofilm growth Two chamber Carbon paper Carbon paper [41] Time-course correlation of biofilm properties Single/ Air-cathode Carbon paper Carbon paper [43] Effect of mediators Single + Two Carbon paper Carbon paper [42] Effect of pH on anodic reactions Single/ Air-cathode Graphite felt Carbon cloth [51] Cathode Impedance     Effect of substrate Single + Two Carbon paper Carbon paper [42] Effect of substrate diffusion Two chamber Reticulated Vitreous Carbon Foam Reticulated Vitreous Carbon Foam [55] Effect of mediators Single + Two Carbon paper Carbon paper [42] Effect of different cathode materials Single/ Air-cathode Carbon felt Pt, Mn2O3 and Fe2O3 on Carbon paper [57] Effect of different cathode materials Single/ Air-cathode Graphite felt Graphite felt, Carbon paper, Stainless steel mesh [58] Effect of cathode binding agent Single/ Tubular Carbon granules Catalyst layer and Carbon fiber [59] Characterization of Bio-cathode Two chamber Graphite paper Graphite paper [64] Full Cell Impedance     Reactor configuration Single/ tubular air-cathode Carbon granules Carbon cloth [67] Reactor configuration Single/ Tubular/ Upflow Granular activated Carbon Granular activated Carbon [22] Reactor configuration Floating MFC Carbon granules Catalyst layer and Carbon fibre [68] Effects of ionic strength of anode fluid Single/ Air-cathode Carbon cloth Carbon cloth [69] Effect of separators Single/ Air-cathode Graphite fibre brush Carbon cloth [70] Electron transfer mechanism Two chamber Carbon cloth Carbon cloth [71]

Table 1: Summary of literature on the use of electrochemical impedance spectroscopy for microbial fuel cells.