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质子交换膜燃料电池中基于晶格的径向流场设计与性能优化

Design and performance optimization of a lattice-based radial flow field in proton exchange membrane fuel cells.

作者信息

Zheng Minggang, Liang Han, Bu Wenxie, Luo Xing, Hu Xiaoxu, Zhang Zhihu

机构信息

School of Mechanical Engineering, Shandong Jianzhu University 1000 Fengming Road Jinan 250101 Shandong China

School of Mechanical Engineering, Tianjin University Tianjin 300350 China.

出版信息

RSC Adv. 2024 Oct 15;14(44):32542-32553. doi: 10.1039/d4ra05965d. eCollection 2024 Oct 9.

DOI:10.1039/d4ra05965d
PMID:39411262
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11474894/
Abstract

The design of the flow field structure in Proton Exchange Membrane Fuel Cells (PEMFCs) plays a pivotal role in determining their electrochemical performance. This study presents a lattice-based radial flow field configuration designed to improve PEMFC efficiency. The difference between the flow field and the traditional flow field is that the flow field is segmented by a small cylindrical rib instead of a longer rib. The research employs COMSOL Multiphysics simulation software to establish the model of the operating conditions of PEMFCs, focusing on analyzing how the number of rib branches and the minimum rib radius influence the oxygen distribution, water distribution, and pressure drop in the system. The results demonstrate that varying the number of rib branches and the minimum radius of the cylindrical ribs has a pronounced impact on the PEMFC's performance. Furthermore, a comparative analysis of multiple design configurations reveals the optimal operating parameters. Specifically, within a quarter of the computational domain, the configuration featuring a minimum rib radius of 0.135 cm and six rib branches delivers the best electrochemical performance.

摘要

质子交换膜燃料电池（PEMFC）中流场结构的设计在决定其电化学性能方面起着关键作用。本研究提出了一种基于晶格的径向流场配置，旨在提高PEMFC的效率。该流场与传统流场的区别在于，流场是由小圆柱形肋条而非较长的肋条进行分割。本研究采用COMSOL Multiphysics模拟软件建立PEMFC运行条件的模型，重点分析肋条分支数量和最小肋条半径如何影响系统中的氧气分布、水分布和压降。结果表明，改变肋条分支数量和圆柱形肋条的最小半径对PEMFC的性能有显著影响。此外，对多种设计配置的对比分析揭示了最佳运行参数。具体而言，在计算域的四分之一范围内，最小肋条半径为0.135厘米且有六个肋条分支的配置具有最佳的电化学性能。

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