کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1278741 | 1497572 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Occurrence of power overshoot for two-chambered MFC at nearly steady-state operation Occurrence of power overshoot for two-chambered MFC at nearly steady-state operation](/preview/png/1278741.png)
At high electrical current regime power overshoot may occur in microbial fuel cell (MFC) operation with both cell voltage and electrical current declining at reduced external loads. This study demonstrated the power overshoot in a two-chamber MFC using acetate and oxygen respectively as anodic and cathodic fuels. The cell worked well until reaching 0.51 V and 790 mA/m2 at power density of 400 mW/m2; further reducing external load leads to decrease in both cell voltage and generated current. During the noted power overshoot regime the internal resistance of MFC increased monotonically with decreasing external load. Based on the electrochemical analysis of anodic and cathodic losses, the occurrence of power overshoot is proposed to be determined by the combined resistance of intracellular loss and of extracellular electron transfer (EET) loss.
Journal: International Journal of Hydrogen Energy - Volume 36, Issue 21, October 2011, Pages 13896–13899