Co-Fe-N@biochar anode for improvment the electricity generation performance of microbial fuel cell

作者：Xia Zhao, Yumin Xu, Fei Yin, Yucheng Li, Xinyi Li, Qian Wei · 发表于：Environmental Technology · 年份：2023 · DOI：10.1080/09593330.2023.2283797 · 被引用次数：5 · 研究领域：Microbial Fuel Cells and Bioremediation、Supercapacitor Materials and Fabrication、Electrochemical sensors and biosensors

Microbial fuel cells (MFCs) can generate energy while processing organic pollutants, which has a great impact on environmental wastewater treatment applications. In this study, a gel polymer was formed by Co-Fe-N co-doping biochar (Co-Fe-N@BC), which was used as the anode material to improve the electricity generation performance of MFC. The Co-Fe-N@BC material prepared at 900℃ carbonised biomass into more graphitic carbon, and its total resistance (3.56 Ω) was significantly reduced. In the corresponding dual-chamber MFC, the current density was 2.81 A/m2, and the power density reached 1181 mW/m2 at maximum. Among the materials tested, the Co-Fe-N@BC anode MFC had the highest chemical oxygen demand removal rate and coulombic efficiency, reaching 91% and 13%, respectively. It is proved that MFC with Co-Fe-N@BC anode has the best electrochemical performance.