A facile fabrication method was developed to construct a three-dimensional (3D) mesoporous anode by coating single-walled carbon nanotubes (SWCNTs) on a mesoporous polysulfone matrix (MPPS) for microbial fuel cells (MFCs). Owing to highly active surface areas and efficient extracellular electron transfer between Shewanella cells and the anode, the MFC achieved an electricity output of 1410 mW m(-2), being one of the highest among the reported Shewanella-based MFCs.