Developing low-cost and high-performance anodes is of great significance for wider applications of microbial fuel cells (MFCs). In this study, microalgae and pyrite were co-pyrolyzed (P/MC) and then coated on carbon felt (CF) with PTFE as a binder. P/MC modification resulted in increased electroactive surface area, superhydrophilicity and higher biocompatibility. Besides, the P/MC-CF anode reduced the charge transfer resistance from 35.1 Ω to 11.4 Ω. The highest output voltage and the maximum power density of the MFC equipped with the P/MC-CF anode were 657 mV and 1266.7 mW/m², respectively, which were much larger than that of the MFC with the CF anode (530 mV, 556.7 mW/m²). The P/MC-CF anode also displayed higher columbic efficiency (39.41%) than the CF anode (32.37%). This work suggests that pyrolyzing microalgae with pyrite is a promising method to enhance the performance of MFCs.

开发低成本、高性能的阳极对于微生物燃料电池（MFCs）的更广泛应用具有重要意义。在这项研究中，微藻和黄铁矿共热解 (P/MC)，然后用 PTFE 作为粘合剂涂覆在碳毡 (CF) 上。P/MC 改性导致增加的电活性表面积、超亲水性和更高的生物相容性。此外，P/MC-CF 阳极将电荷转移电阻从 35.1 Ω 降低到 11.4 Ω。配备 P/MC-CF 阳极的 MFC 的最高输出电压和最大功率密度分别为 657 mV 和 1266.7 mW/m ²，远大于配备 CF 阳极的 MFC（530 mV， 556.7 毫瓦/米²）。P/MC-CF 阳极还显示出比 CF 阳极（32.37%）更高的库伦效率（39.41%）。这项工作表明，用黄铁矿热解微藻是一种提高 MFC 性能的有前途的方法。