MASS TRANSFER SIMULATION AND PERFORMANCE STUDY OF PEMFC WITH NON-UNIFORM FLOW CHANNEL

Wang Naixiao; Cheng Youliang; Ding Rui; Fan Xiaochao

doi:10.19912/j.0254-0096.tynxb.2024-1062

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 173-179. DOI: 10.19912/j.0254-0096.tynxb.2024-1062

MASS TRANSFER SIMULATION AND PERFORMANCE STUDY OF PEMFC WITH NON-UNIFORM FLOW CHANNEL

Wang Naixiao^1,2, Cheng Youliang^1,2, Ding Rui^1,2, Fan Xiaochao³

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Abstract

Based on the traditional serpentine flow channel, several non-uniform flow channel structures with alternating, gradient, trumpet, and dispersed types were proposed in this paper. By establishing a three-dimensional isothermal steady-state PEMFC simulation model, the effects of non-uniform flow channels on the mass transfer characteristics and output performance of PEMFCs were analyzed. The results show that compared to the conventional serpentine flow channel, non-uniform designs can effectively improve the transport and distribution of reactant gases and products within the flow channel, enhance the electrochemical reaction process, and achieve higher membrane current densities. Furthermore, these designs can better balance transport performance and pressure loss matching, effectively improving the energy utilization efficiency of PEMFCs. Specifically, the MD-Ⅵ flow channel increases the peak current density of PEMFCs by 10.2% and the peak power density by 14.2%. The non-uniform designs are expected to provide more ideas for the innovation and optimization of PEMFC flow channel structures.

Key words

hydrogen energy / PEMFC / non-uniform flow channel / numerical simulation / output performance / mass transfer

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Wang Naixiao, Cheng Youliang, Ding Rui, Fan Xiaochao. MASS TRANSFER SIMULATION AND PERFORMANCE STUDY OF PEMFC WITH NON-UNIFORM FLOW CHANNEL[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 173-179 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1062

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