Power overshoot that presents in the power curves of microbial fuel cells (MFCs) is one of the main reasons for the deterioration of MFC performance over the high current region. In this research, the mechanisms of power overshoot were investigated with single-chamber MFCs integrated with carbon cloth anode and Fe/N-doped carbon cathodes possessing varied capacitance properties. It was revealed that insufficient anodic current produced at high potential is responsible for power overshoot generation, which could be eliminated with higher capacitive cathode (7.79 F) compared with the one with lower capacitive cathode (3.74 F). This elimination can be ascribed to the improvement of MFC capacitance induced by cathode capacitance, which was proved by MFC charge-discharge test. However, cathode capacitance can only increase the MFC capacitance to a limited extent, as power overshoot can still occur when applying long stabilization time for polarization test.

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微生物燃料电池（MFC）的功率曲线中出现的功率过冲是在高电流区域MFC性能下降的主要原因之一。在这项研究中，研究了功率过冲的机理，该方法是将单室MFC与碳布阳极和具有不同电容特性的Fe / N掺杂碳阴极集成在一起。结果表明，在高电势下产生的阳极电流不足是造成功率超调的原因，与较低电容阴极（3.74 F）相比，较高的电容阴极（7.79 F）可以消除该过冲。这种消除可归因于由阴极电容引起的MFC电容的改善，这已通过MFC充放电测试证明。然而，

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