Abstract
SUMMARY The study systematically analyzes the performance of micro direct methanol fuel cell (μDMFC) with different flow fields. A two-phase three-dimensional model is developed to evaluate the mass transport accurately. The transport of methanol and air, the pressure distribution, the anode saturation, and the methanol crossover are numerically observed, the under-rib convection is also investigated numerically. The flow fields with an active area of 0.64 cm2 are fabricated on silicon wafers by micro electromechanical system technology. Performance of μDMFCs with different flow fields is sorted as: double-serpentine flow field (DSFF) > single-serpentine flow field (SSFF) > triple-serpentine flow field (TSFF), and the dynamic test results indicate the cell with DSFF takes the shortest time to reach a stable power output when compared with other cells. Copyright © 2013 John Wiley & Sons, Ltd.
Published Version
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