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| Abstract: |
| Microbial Fuel Cells (MFCs) are low power output and low power density devices due to many losses, which further leads to troubleshooting while operating under a certain procedure for any application. The study analyzes details for troubleshooting and identifies losses through an illustration of lab scale air cathode Microbial Fuel Cell (MFC). During this procedure, the maximum current achieved is 7.88 mA, corresponding to a maximum power of 6.21 mW against a 100 ?external load resistance for the air cathode MFC. The maximum power density achieved by the air cathode MFC is 1465 mW/m2 at 100 ?. The calculated internal resistance of the cell is 169 ?based on the maximum theoretical power from standard potentials of electrodes, maximum power based on OCV (Open Circuit Voltage) and then actual achieved power. The analysis concludes that overpotentials of electrodes and ohmic losses are the two significant losses that need to be reduced to enhance the power output of MFC. Achievement of a standard polarization curve is possible through supervision of these troubleshooting. |
| Key words: microbial fuel cell cell voltage current open circuit voltage power density polarization curve |
| DOI：10.11916/j.issn.1005-9113.2025093 |
| Clc Number:TM911.45 |
| Fund: |
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| Descriptions in Chinese: |
| Microbial Fuel Cells (MFCs) are low power output and low power density devices due to many losses, which further leads to troubleshooting while operating under a certain procedure for any application. The study analyzes details for troubleshooting and identifies losses through an illustration of lab scale air cathode Microbial Fuel Cell (MFC). During this procedure, the maximum current achieved is 7.88 mA, corresponding to a maximum power of 6.21 mW against a 100 ?external load resistance for the air cathode MFC. The maximum power density achieved by the air cathode MFC is 1465 mW/m2 at 100 ?. The calculated internal resistance of the cell is 169 ?based on the maximum theoretical power from standard potentials of electrodes, maximum power based on OCV (Open Circuit Voltage) and then actual achieved power. The analysis concludes that overpotentials of electrodes and ohmic losses are the two significant losses that need to be reduced to enhance the power output of MFC. Achievement of a standard polarization curve is possible through supervision of these troubleshooting. |
