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Novel nickel silicide nanowire anodes achieve 323 mW/m² power density in microbial fuel cells with E. coli bacteria, demonstrating 2.5x improvement over conventional electrodes.

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What they did

System
MFC

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Abstract

This study presents novel nickel silicide nanowire anodes that significantly enhance microbial fuel cell performance. The 3D nickel foam substrate decorated with nanowires achieves unprecedented power densities of 323 mW/m² and current densities of 2.24 A/m². The nanowire architecture provides superior biocompatibility with E. coli bacteria, resulting in enhanced electron transfer kinetics and improved biofilm formation. The electrode demonstrates a 2.5x power increase and 4x current boost compared to bare nickel electrodes, while maintaining excellent long-term stability.

Key findings

  • Peak power density: 323 mW/m²
  • Current density: 2.24 A/m²
  • 2.5x power improvement vs bare nickel
  • 4x current density boost
  • Excellent biocompatibility with E. coli
  • Long-term operational stability

Keywords

Microbial fuel cellAnodeNickelNanomaterialsNanowireNanotechnology

Identifiers

DOI
10.1038/s41598-025-91889-x
Journal
Scientific Reports
Year
2025