Performance of proton exchange membrane fuel cells with bionics flow field structures

WANG Zeying; CHEN Tao; ZHANG Jiwei; CHEN Jinqi; FENG Zhengheng

doi:10.16511/j.cnki.qhdxxb.2022.22.009

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Journal of Tsinghua University(Science and Technology) ›› 2022, Vol. 62 ›› Issue (10) : 1697-1705. DOI: 10.16511/j.cnki.qhdxxb.2022.22.009

NUCLEAR AND NEW ENERGY TECHNOLOGY

Performance of proton exchange membrane fuel cells with bionics flow field structures

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Abstract

The flow field has a very important effect on the proton exchange membrane fuel cell (PEMFC) fuel distribution and water management.This study used the structure of ginkgo veins to design a bionic flow field on a bipolar plate.The peak power densities and internal conditions were analyzed using the commercial computional fluid dynamics (CFD) software Fluent.The peak power density,internal mass transfer characteristics and current density distributions of PEMFCs with this bionic flow field,a paralled flow field and a five-snake flow field were compared to show that the bionic flow field increased the peak power density by 28.85% over that of the parallel flow field,which was,however,still 4.36% lower than that of the five-snake flow field.The reactant distribution and the current density in the bionic flow field are better than in the parallel flow field because of the larger pressure.

Key words

proton exchange membrane fuel cell (PEMFC) / bionic flow field / polarization curve / mass transfer / water management

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WANG Zeying, CHEN Tao, ZHANG Jiwei, CHEN Jinqi, FENG Zhengheng. Performance of proton exchange membrane fuel cells with bionics flow field structures[J]. Journal of Tsinghua University(Science and Technology). 2022, 62(10): 1697-1705 https://doi.org/10.16511/j.cnki.qhdxxb.2022.22.009

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