Strategies for the Targeted Improvement of Anodic Electron Transfer in Microbial Fuel Cells

The concept of the microbial fuel cell (MFC) has existed for over 100 years, but only within the last decade, the practical implementation has become conceivable due to microbial and technical progress. This review article presents available strategies to increase the limiting extracellular electron transfer (EET) in the anode space of MFCs. Therefore, organism-based improvements as well as the effects of (bio-)polymers and redox mediators on ETT will be demonstrated.