Investigation on cold start of polymer electrolyte membrane fuel cells stacks with diverse cathode flow fields

Zhu, Yike; Lin, Rui; Han, Lihang; Jiang, Zhonghao; Zhong, Di

doi:10.1016/j.ijhydene.2020.11.021

Cited by 17 publications

(5 citation statements)

References 42 publications

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“…Significantly less studies investigate frost start behavior using segmented measurements (cf. [36][37][38][39][40][41][42][43][44][45][46]).…”

Section: Literature Researchmentioning

confidence: 99%

Analysis of Ice Formation during Start-Up of PEM Fuel Cells at Subzero Temperatures Using Experimental and Simulative Methods

Schmitz,

Bahr,

Gößling

et al. 2023

Energies

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Freeze start is a challenge in the commercialization of PEM fuel cells. In this study, ice formation in cell layers is investigated through experiments and simulations. Segmentation of the fuel cell on the test bench allows to determine the local distributions of current density and high frequency resistance over the active cell area. The location and timing of ice formation are analyzed in the experiments. It is shown that the formation of ice lenses can be detected by local measurements of the high frequency resistances. Then, a multiphysical CFD model is built and validated with the measurements and the commonalities and differences between the model results and the experiments are studied. It is shown that the model determines the freeze start behavior very well in wide operating ranges. Together with the findings from the experimental investigations, the model will finally be used to investigate local ice formation in detail.

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“…Significantly less studies investigate frost start behavior using segmented measurements (cf. [36][37][38][39][40][41][42][43][44][45][46]).…”

Section: Literature Researchmentioning

confidence: 99%

Analysis of Ice Formation during Start-Up of PEM Fuel Cells at Subzero Temperatures Using Experimental and Simulative Methods

Schmitz,

Bahr,

Gößling

et al. 2023

Energies

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“…流场的形状决定了反应气体的分布和排水性能，因此对冷启动性能有显著影响。Hu 等人 [85] 采用数值模拟的方法研究了燃料电池阴极流场形状和 GDL 孔隙率对冷启动过程的影响，通过分析不同时刻燃料电池的电流密度、冰体积分数、温度及含水量等内部参数，发现波浪形流场和 GDL 孔隙率较高的燃料电池冷启动性能最佳。Liao 等人 [12] 建立了一个瞬态三维数值模型来详细分析锯齿形流场的燃料电池冷启动过程(图 5)。结果表明，锯齿形流场能更好地分配 PEMFC 中的反应物和产物，并且增强了电池内部脊下和流道下区域之间沿流动方向的传输。Zhu 等人 [86] 通过改变流道截面宽度设计了变截面蛇形流场、变截面交指形流场和变截面平行流场三种新型的电堆阴极流场，以此提高电堆的排水效率。结果表明，变截面蛇形流场的电堆在冷启动速度最快，且启动失败时性能衰减最小。Li 等人 [87] 设计了一种变截面波浪蛇形流道，发现其可以加强氧气运输和清除积聚的水。Maruo 等人 [88] 开发了一种 3D 细网格阴极流道以改善排水性能，并成功应…”

Section: 和电流密度分布的变化规律，发现降低启动电压可以提高电堆的冷启动性能，实现快速启动。unclassified

Strategy optimization of proton exchange membrane fuel cell cold start

Ji¹,

Lin²

2022

Chin. Sci. Bull.

Self Cite

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“…It has been suggested that optimizing the structure of fuel cell can fundamentally improve the cold-start capability of PEMFC [8]. The structural optimization of PEMFC can be separated into optimization of the PEM [9], optimization of the CL [10][11][12], optimization of microporous layer (MPL) [13], optimization of GDL [14,15], and optimization of flow field structure [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of freeze–thaw cycles on membrane electrode assembly of proton exchange membrane fuel cells and its fault diagnosis method

Zhang,

Chen,

Zhang

et al. 2024

Fuel Cells

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In low‐temperature environment, the residual water in the membrane electrode assembly (MEA) will freeze after the operation of proton exchange membrane fuel cells, which will cause damage to the MEA. In this paper, the effect of freeze–thaw cycles on MEA was studied. Six sets of MEA samples with 0, 20, 40, 60, 80, and 100 times freeze–thaw cycles were set up, and the damage on MEAs is analyzed by polarization curves, electrochemical impedance spectra, cyclic voltammetry curves, and scanning electron microscope. It was found that the freeze–thaw cycles caused degradation on MEA, and the ohmic resistance of MEA increases with the number of cycles increases before the 60 freeze–thaw cycles, and after 60 freeze–thaw cycles, a gap appeared between the proton exchange membrane (PEM) and the catalyst layer, which led to more water entering the PEM and the ohmic resistance of MEA decreased. Besides, according to the data analysis, the experimental samples are divided into three categories (normal MEA, lightly damaged MEA, and seriously damaged MEA). A classifier model combining inception network and light gradient boosting machine (LGBM) was established, and it was found that the combined model was better than inception–dense and LGBM for classification, reaching 96.89%.

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Investigation on cold start of polymer electrolyte membrane fuel cells stacks with diverse cathode flow fields

Cited by 17 publications

References 42 publications

Analysis of Ice Formation during Start-Up of PEM Fuel Cells at Subzero Temperatures Using Experimental and Simulative Methods

Analysis of Ice Formation during Start-Up of PEM Fuel Cells at Subzero Temperatures Using Experimental and Simulative Methods

Strategy optimization of proton exchange membrane fuel cell cold start

Effect of freeze–thaw cycles on membrane electrode assembly of proton exchange membrane fuel cells and its fault diagnosis method

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