<p>This comprehensive study delves into the crucial role that polymers play in promotion of the performance of microbial fuel cells (MFCs). It specifically investigates how polymers impact various components of MFCs, including anode and cathode electrodes, ion exchange membranes, and chamber structures. The study focuses on the modification of anode electrodes using conductive polymers like polyaniline, polythiophene, and polypyrrole to boost electricity generation and improve wastewater treatment. Additionally, it explores the application of polymers in cathode catalyst layers to improve the oxygen reduction reaction and enhance overall MFC performance. This study also highlights the challenges and opportunities associated with MFCs, stressing the need for cost reduction, component lifespan extension, and enhanced power generation. Moreover, it discusses the utilization of polymer composites with other materials, such as metals, metal oxides, and carbon nanotubes, improve the performance and durability of MFCs. The study addresses the significance of membrane materials in MFCs and the development of cost-effective, high-performance membranes. Overall, this research provides a comprehensive overview of the current advancements in MFCs, emphasizing the pivotal role of polymers in improving MFC efficiency and addressing challenges related to renewable energy technologies. This study, underscores the potential of MFCs as a renewable energy technology and highlights the crucial role of polymers in enhancing their efficiency and performance, offering valuable insights into the advancements and challenges in MFC technology.</p>