A highly efficient anode is very crucial for an improved microbial fuel cell (MFC) performance. In this study, a binder-free manganese cobalt oxide (MnCo₂O₄@CF) anode was synthesized using a conventional carbon felt (CF) by a facile hydrothermal method. A large electrochemically active and rough electrode surface area of MnCo₂O₄@CF anode improved the substrate fluxes and microbial adhesion/growth. Furthermore, the electrochemical tests on the synthesized anode confirmed the superior bioelectrochemical activity, reduced ion transfer resistance, and excellent capacitance. This resulted in an improved power density (945 mW/m²), which was 3.8 times higher than that of CF anode. The variable valence state, high stability and biocompatibility of MnCo₂O₄@CF resulted in continuous current density performance for five MFC cycles. High-throughput biofilm analysis revealed the enrichment of electricity producing phylum of Proteobacteria and Bacteroidetes (∼90.0%), which signified that the modified MnCo₂O₄ anode accelerated the enrichment of electro-active microbes.

高效阳极对于提高微生物燃料电池（MFC）的性能至关重要。在这项研究中，使用常规的碳毡（CF）通过简便的水热法合成了无粘结剂的氧化锰钴（MnCo ₂ O ₄ @CF）阳极。MnCo ₂ O ₄ @CF阳极具有较大的电化学活性和较粗糙的电极表面积，可改善基材通量和微生物粘附/生长。此外，对合成阳极的电化学测试证实了其优异的生物电化学活性，降低的离子转移阻力和出色的电容。这样可以提高功率密度（945 mW / m ²），是CF阳极的3.8倍。MnCo ₂ O ₄ @CF的可变价态，高稳定性和生物相容性导致了五个MFC循环的连续电流密度性能。高通量生物膜分析表明，变形杆菌和拟杆菌的产电门富集（〜90.0％），这表明改性的MnCo ₂ O ₄阳极加速了电活性微生物的富集。