Macroporous graphitic carbon foam decorated with polydopamine as a high-performance anode for microbial fuel cell

作者：Jiang, Hongmei; Yang, Lu; Deng, Wenfang; Tan, Yueming^*; Xie, Qingji

来源：Journal of Power Sources, 2017, 363: 27-33.

DOI：10.1016/j.jpowsour.2017.07.064

• Macroporous graphitic carbon foam
• Polydopamine
• Maltose
• Microbial fuel cell
• Anode

Herein, a macroporous graphitic carbon foam (MGCF) electrode decorated with polydopamine (PDA) is used as a high-performance anode for microbial fuel cell (MFC) applications. The MGCF is facilely prepared by pyrolysis of a powder mixture comprising maltose, nickel nitrate, and ammonia chloride, without using solid porous template. The MGCF is coated with PDA by self-polymerization of dopamine in a basic solution. The MGCF can provide a large surface area for bacterial attachment, and PDA coated on the MGCF electrode can further promote bacterial adhesion resulting from the improved hydrophility, so the MGCF-PDA electrode as an anode in a MFC can show ultrahigh bacterial loading capacity. Moreover, the electrochemical oxidation of flavins at the MGCF-PDA electrode is greatly accelerated, so the extracellular electron transfer mediated by flavins is irriproved. As a result, the MFC equipped with a MGCF-PDA anode can show a maximum power density of 1735 mW cm(-2), which is 6.7 times that of a MFC equipped with a commercial carbon felt anode, indicating a promising anode for MFC applications.

• 出版日期2017-9-30
• 单位湖南师范大学