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This MFC study investigates biofilm, anode. The research focuses on system optimization and characterization.

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What they did

System
MFC

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Abstract

In this study, a novel composite anode electrode for microbial fuel cells (MFCs) was developed by wrapping a carbon sleeve around the surface of carbon veil. While the carbon veil is widely used due to its biocompatibility and surface area, its poor mechanical strength limits long-term operation. The novelty of the study lies in reinforcing the flexible, non-woven carbon veil with a mechanically robust and tubular carbon sleeve layer without compromising performance. This composite electrode (carbon veil + carbon sleeve) improved mechanical integrity and in addition, facilitated better biofilm development. Over a 5 week operation, the composite anode achieved a maximum power output of 527.7 μW, a 3-fold increase compared to using the carbon veil alone (175.5 μW). SEM analysis confirms biofilm improvement in the combined electrodes compared to the control. FTIR analysis confirmed changes in surface functional groups post-operation, suggesting enhanced biofilm-electrode interactions. This work demonstrates a simple yet effective reinforcement strategy that significantly enhances MFC anode durability and power performance.

Keywords

AnodeMicrobial fuel cellCarbon fibersElectrodeComposite numberChemical engineering

Identifiers

DOI
10.1039/d5ra05180k
PubMed
41190140
Journal
RSC advances
Year
2025