Related references
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Yang Wang et al.
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Article
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Chunhua Min et al.
Summary: A numerical model of a PEMFC with serpentine flow field was set up in this study. Rectangular or triangular blocks were arranged in the cathode channel to improve cell performance. The results showed that the arranged blocks effectively enhanced reactant mass transfer and the triangular blocks performed better than the rectangular blocks. The blocks arranged in the rear of the turn exhibited the best cell performance, which was attributed to the combined effect of under-rib flow and secondary flow generated by the blocks.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zeting Yu et al.
Summary: This study proposes a systematic methodology combining CFD, ANN, and intelligent optimization algorithms to improve the performance of PEMFC. The improved flow field structure optimized by multi-objective optimization can enhance the maximum power density and oxygen uniformity of PEMFC. The use of trained ANN surrogate models achieves high prediction precision.
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Article
Chemistry, Physical
Qingsong Zuo et al.
Summary: In this study, a new structure with staggered blocks on the flow channels of PEMFC and auxiliary flow channels under the ribs is proposed. The effects of this structure on pressure drop, reactant distribution, and liquid water removal in the fuel cells are investigated through numerical simulation. The results show that the new structure improves performance by increasing current density, equalizing pressure drop, promoting uniform reactant distribution, and enhancing transport across the ribs. It also effectively removes liquid water under high humidification, high current density, and low temperature conditions, ensuring the output performance and durability of the fuel cell.
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Shuxin Liao et al.
Summary: This study proposes a novel sub-channel design to address the flooding problem in proton exchange membrane fuel cells by enhancing gas pressure difference. The effects of sub-channel wall properties and channel geometry on water removal capacity are evaluated through numerical simulations and experimental observations. The results show that the wall contact angle and included angle to the main channel play a crucial role in the drainage performance of the sub-channel.
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Arasy Fahruddin et al.
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A. G. Olabi et al.
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Yonghua Cai et al.
Summary: This study investigates the influence of blockages on mass transfer and performance of PEMFC through 3D models, revealing that factors such as cross section shapes of blockages, ratios of blockage length to channel length and spacing length have a significant impact on the enhancement of mass transfer in PEMFC.
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Chemistry, Physical
Mingxin Liu et al.
Summary: The study simulated a PEMFC with a new tapered slope flow field structure using Ansys Fluent software, showing superior performance, higher drainage efficiency, and more uniform oxygen mass fraction distribution. The double-sided TSFF with a length of 1.2 mm demonstrated the best performance, with a 5.89% increase in maximum power density compared to the serpentine flow field.
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(2021)
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Muthukumar Marappan et al.
Summary: PEMFC is a fuel cell used for power generation without emissions. Better water management and flow field design are crucial for enhanced performance. Various flow field designs' effects on PEMFC performance have been studied in detail.
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Mehrdad Ghasabehi et al.
Summary: The study focuses on a modified parallel PEMFC model, investigated through 3D multiphase computational fluid dynamics simulation to study water management and reactants transport, and explore the interactions between operating parameters. The results indicate that temperature and pressure increase can have a positive effect only with appropriate stoichiometries of fuel and air along with sufficient relative humidities.
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Marco Sauermoser et al.
Summary: This study investigated a fuel cell distributor with tree-like flow field plates through experiments and numerical simulations. The width scaling parameters were found to affect viscous dissipation, but were not directly related to improving PEMFC performance. Water accumulation and a slight increase in single PEMFC resistance were identified as the main reasons for decreased power density. Further improvements recommended reducing the number of branching generation levels and width scaling factor.
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Yinghui Zhang et al.
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Shuan-yang Zhang et al.
Summary: The design of gas flow field significantly impacts the overall performance of PEMFC. Wedge-shaped fins and GDL porosity were found to be crucial for enhancing PEMFC performance, with an increase in fin volume and number, and a decrease in porosity leading to improved performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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Multidisciplinary Sciences
Kui Jiao et al.
Summary: The rapid growth of proton-exchange membrane fuel cell technology is driving the demand for clean and sustainable global energy applications. Increasing PEMFC power density is critical for commercialization, with ambitious goals set globally. Future high-power-density PEMFCs will focus on improving membrane electrode assembly components, water and thermal management, and materials.
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