Improving Microbial Fuel Cell Performance Using Porous Capacitive Composite Bioanode Materials with Energy Storage Function

Microbial fuel cells (MFCs) have shown promise in solving energy and environmental problems, but their practical application is limited by low power output. In this study, carbon nanotubes/polypyrrole composite anode materials were prepared on a porous sponge matrix. By combining the characteristics of sponge, good conductive properties nanotubes, storage ability polypyrrole capacitive materials, exhibited large specific capacity, high porosity, surface area, electron transport ability, biocompatibility. The results showed that maximum density modified MFC reached 7.46 W m−3, which was 2.53 times higher than control anode. stored Qs released 235.6 C m−2, 6.5 electrode. addition, transfer impedance Rct S/CNT/PPy electrode (5.5 Ω) much lower (16.8 Ω). research presented paper demonstrates new approach to improving generation performance MFCs.