This paper investigates the different flow channel design effects on
direct methanol fuel cell (DMFC) performance. Three types of DMFC flow
channels were fabricated and discussed in this paper. The first type is a
single serpentine flow channel; the second type is the smooth corner
serpentine flow channel, and the third type is the unilateral crooked
serpentine flow channel. Experimental investigations into the DMFC
polarization curves with different flow channel combinations were
conducted. The results show that the anode flow channel type effect is
larger than the cathode flow channel type. The DMFC with the unilateral
crooked serpentine flow channel could increase the DMFC performance.