期刊
ENERGIES
卷 3, 期 4, 页码 592-606出版社
MDPI
DOI: 10.3390/en3040592
关键词
biofuel cell; internal resistances; electrogenic; anode impedance; capacitance
资金
- Oak Ridge National Laboratory (ORNL)
- U.S. Department of Energy [DE AC05-00OR22725]
- American Chemical Society, Green Chemistry Initiative
Impedance changes of the anode, cathode and solution were examined for an air-cathode microbial fuel cell (MFC) under varying conditions. An MFC inoculated with a pre-enriched microbial culture resulted in a startup time of less than ten days. Over this period, the anode impedance decreased below the cathode impedance, suggesting a cathode-limited power output. Increasing the anode flow rate did not impact the anode impedance significantly, but it decreased the cathode impedance by 65%. Increasing the anode-medium ionic strength also decreased the cathode impedance. These impedance results provide insight into electron and proton transport mechanisms and can be used to improve MFC performance.
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