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This MFC study Abstract Chronoamperometric investigations with rotating disc electrodes (RDEs) were used to characterise the anodic half‐cell of yeast powered microbial fuel cells using methylene blue (MB) as a mediator. Both convection and mediator adsorption were shown to affect the anodic current.

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What they did

System
MFC

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Abstract

Abstract Chronoamperometric investigations with rotating disc electrodes (RDEs) were used to characterise the anodic half‐cell of yeast powered microbial fuel cells using methylene blue (MB) as a mediator. Both convection and mediator adsorption were shown to affect the anodic current. A microbe–mediator limited reaction model was developed and shown to agree well with the experimental data. A power density of ∼150 μW cm –2 was achieved in a full cell, which represented a significant increase from prior reports on yeast‐catalysed fuel cells. The increased power density was enabled by using high mediator concentrations and by controlling the mediator adsorption.

Key findings

  • A power density of ∼150 μW cm⁻² was achieved in a full cell, which represented a significant increase from prior reports on yeast‐catalysed fuel cells.
  • The increased power density was enabled by using high mediator concentrations and by controlling the mediator adsorption.

Keywords

Microbial fuel cellAnodeMediatorYeastAdsorptionMethylene blue

Identifiers

DOI
10.1002/fuce.200800039
Journal
Fuel Cells
Year
2009