Sensitivity and Stability Study of Test Conditions for a 1 kW Proton Exchange Membrane Fuel Cell Stack.

IF 3.3 4区 工程技术 Q2 CHEMISTRY, PHYSICAL Membranes Pub Date : 2024-09-18 DOI:10.3390/membranes14090197
Peng Xu, Yingmin Yi, Weijie Wang, Meng Xie, Yiwei Yuan
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Abstract

This study investigates the impact of compression force on stack performance and the effect of testing conditions on sensitivity of stack performance. It explores the variation of assembly force on the pressure distribution at different positions in a 1 kW proton exchange membrane fuel cell stack. Polarization curves and high-frequency resistance (HFR) changes of the stack were measured under different assembly forces, and the optimal assembly force of the stack was determined using the average single-cell voltage (HFR-free). The sensitivity of testing conditions was optimized, and the optimum test parameters at different current densities were identified within the selected range. Stack stability was tested at different current densities using the optimized test conditions, and the sensitivity of test conditions was verified by the fluctuation amplitude of single cell voltage and internal impedance.

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1 千瓦质子交换膜燃料电池堆测试条件的敏感性和稳定性研究。
本研究探讨了压缩力对堆栈性能的影响,以及测试条件对堆栈性能敏感性的影响。研究探讨了装配力对 1 千瓦质子交换膜燃料电池堆不同位置压力分布的影响。测量了不同装配力下电池堆的极化曲线和高频电阻(HFR)变化,并利用平均单电池电压(无 HFR)确定了电池堆的最佳装配力。对测试条件的灵敏度进行了优化,并在选定范围内确定了不同电流密度下的最佳测试参数。利用优化的测试条件测试了不同电流密度下的堆栈稳定性,并通过单电池电压和内部阻抗的波动幅度验证了测试条件的灵敏度。
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来源期刊
Membranes
Membranes Chemical Engineering-Filtration and Separation
CiteScore
6.10
自引率
16.70%
发文量
1071
审稿时长
11 weeks
期刊介绍: Membranes (ISSN 2077-0375) is an international, peer-reviewed open access journal of separation science and technology. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided.
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