MESSAI.iO

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This MFC study investigates power density, electron transfer. Key performance metrics include power density, current density.

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What they did

System
MFC

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Abstract

This study investigates microbial fuel cell (MFC) performance through the modification of Saccharomyces cerevisiae with gold nanoparticles (AuNPs) and polypyrrole (PPy). The yeast/AuNP-modified electrodes generated the highest median current of 2.57 nA, significantly outperforming the yeast/PPy-modified (0.82 nA) electrodes. Power density measurements further confirmed the superior performance of the yeast/AuNP-modified electrodes, showcasing a notable improvement in current densities and power outputs. Yeast/AuNP-modified graphite electrodes produced a higher power density of 22.8 mW/m², while exhibiting a lower current density compared to electrodes modified solely with yeast, which achieved a power density of 5.7 mW/m². These findings highlight the potential of AuNPs in significantly enhancing the electrochemical performance of yeast-based MFCs, providing a promising approach for the development of more efficient bioelectrochemical systems.

Keywords

Microbial fuel cellYeastElectrodeColloidal goldSaccharomyces cerevisiaeElectrochemistry

Identifiers

DOI
10.3390/microorganisms13081938
PubMed
40871441
Journal
Microorganisms
Year
2025