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<p>To improve the electrochemical performance of marine sediment microbial fuel cell (MSMFC), a novel composite anode modified by polydopamine (PDA) and sodium polystyrene sulfonate (NaPSS) was proposed. Results indicate that the optimal composite ratio (V<sub>PDA</sub>:V<sub>NaPSS</sub>=5:1) improved the comprehensive performance of anode. The modified anode exhibited maximum power density of 157.60 mW/m², which is 2.80 times higher than blank anode. Moreover, the cyclic voltammetry capacitance and exchange current density of the optimal modified anode are 5.83 times and 2.97 times higher than those of the blank anode, respectively. Hydrophilicity, microbial adhesion and electron transfer efficiency were identified as key factors to the performance of MSMFC. This study provides a novel anode modification method for optimizing MSMFCs which is potential for sustainable energy applications in marine environments.</p>

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Optimization of marine sediment microbial fuel cell performance based on composite modified anode materials of polydopamine and sodium polystyrene sulfonate

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Jun-Lin Huang,
  • Yi Yang,
  • Li-Ze Huangfu,
  • Lin-Meng Wang,
  • Yan Chen,
  • Yu-Bin Fu

摘要

To improve the electrochemical performance of marine sediment microbial fuel cell (MSMFC), a novel composite anode modified by polydopamine (PDA) and sodium polystyrene sulfonate (NaPSS) was proposed. Results indicate that the optimal composite ratio (VPDA:VNaPSS=5:1) improved the comprehensive performance of anode. The modified anode exhibited maximum power density of 157.60 mW/m², which is 2.80 times higher than blank anode. Moreover, the cyclic voltammetry capacitance and exchange current density of the optimal modified anode are 5.83 times and 2.97 times higher than those of the blank anode, respectively. Hydrophilicity, microbial adhesion and electron transfer efficiency were identified as key factors to the performance of MSMFC. This study provides a novel anode modification method for optimizing MSMFCs which is potential for sustainable energy applications in marine environments.