Abstract
Bipolar plate flow field design is crucial for optimizing Proton Exchange Membrane Fuel Cell (PEMFC) performance. This study employs three-dimensional simulations and Computational Fluid Dynamics (CFD) methods to analyze and compare traditional Straight Parallel Flow Field (SPFF), Block Incorporated Flow Field (BIFF), Sub-channel Ribbed Flow Field (SRFF), and Combined Block and Sub-channel Flow Field (CBSFF). The findings indicate that CBSFF not only demonstrates superior oxygen distribution characteristics at high current densities but also shows improved uniformity in moisture and temperature distribution. In addition, the effect of the structural parameters of the CBSFF flow field on its performance has been investigated. In particular, at a voltage of 0.5 V, the net power of the CBSFF is increased by 18 percent compared with that of the SPFF when the height of the block, hb=0.5, and the height of the subchannel, hs=0.3, are used.
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