SIMULATION STUDY ON MASS TRANSFER AND ELECTRICAL PERFORMANCE OF PEMFC WITH NOVEL FLOW-GUIDE BLOCK FLOW CHANNEL

Fu Lirong; Tang Yiwen; Liu Jinyi; Wu Shengwei; Xiao Mingwei

doi:10.19912/j.0254-0096.tynxb.2024-1843

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 776-781. DOI: 10.19912/j.0254-0096.tynxb.2024-1843

SIMULATION STUDY ON MASS TRANSFER AND ELECTRICAL PERFORMANCE OF PEMFC WITH NOVEL FLOW-GUIDE BLOCK FLOW CHANNEL

Fu Lirong, Tang Yiwen, Liu Jinyi, Wu Shengwei, Xiao Mingwei

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Abstract

This study develops an improved flow field design by incorporating micro-guide blocks into a traditional straight channel. The guide blocks are arranged in a staggered manner within the flow field to induce airflow disturbances, promoting convective mass transfer and enhancing the transport of reactant gases. A three-dimensional, steady-state, non-isothermal two-phase model of a PEMFC with the novel guide block flow field was developed using the CFD method. The study systematically investigated the output performance, oxygen mass fraction, and gas flow velocity of the fuel cell. The quantitative analysis was conducted to evaluate the impact of the number of guide blocks on fuel cell performance and compared the results with a traditional straight channel PEMFC.The results elucidate the mechanism by which the improved flow field enhances the output performance of the PEMFC. The flow channel with 8 flow-guide blocks, compared to the traditional straight flow channel, shows an 18.73% increase in maximum current density and an 8.46% improvement in the peak power density of the fuel cell, achieving a net power density of 0.6208 W/cm².

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proton exchange membrane fuel cells / numerical models / mass transfer / structural optimization / flow fields / optimization design

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Fu Lirong, Tang Yiwen, Liu Jinyi, Wu Shengwei, Xiao Mingwei. SIMULATION STUDY ON MASS TRANSFER AND ELECTRICAL PERFORMANCE OF PEMFC WITH NOVEL FLOW-GUIDE BLOCK FLOW CHANNEL[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 776-781 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1843

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