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Novel design of a staggered-trap/block flow field for use in serpentine proton exchange membrane fuel cells

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  • Nguyen, Ba Hieu
  • Kim, Hyun Chul

Abstract

Enhancing the transverse velocity to the catalyst layer and exploiting the over-rib flow are two common methods of improving proton exchange membrane fuel cells (PEMFCs). The block flow field configuration significantly affects the augmentation of the transverse velocity to the catalyst layer, whereas the trap configuration significantly increases the molar concentration of O2 at the cathode catalyst layer without a pressure drop penalty. In this study, four-channel PEMFC models with different configurations were used, including the baseline and staggered-trap, -block, and -trap/block channels. The novel flow field with a combination of trap/block configurations exhibits a higher power output than those of the other designs. Furthermore, the novel staggered-trap/block channel induces a higher over-rib flow velocity than that of the baseline channel, leading to more uniform O2 and temperature distributions within the PEMFC. The optimal trap/block design increases the maximum net cell power by 8.04 % at V = 0.5 V.

Suggested Citation

  • Nguyen, Ba Hieu & Kim, Hyun Chul, 2024. "Novel design of a staggered-trap/block flow field for use in serpentine proton exchange membrane fuel cells," Renewable Energy, Elsevier, vol. 236(C).
    • Handle: RePEc:eee:renene:v:236:y:2024:i:c:s0960148124014435
    DOI: 10.1016/j.renene.2024.121375
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