The Impact on PEMFC of Bionic Flow Field with a Different Branch

Chen, Tao; Xiao, Yong; Chen, Tiezhu

doi:10.1016/j.egypro.2012.08.047

Cited by 49 publications

(21 citation statements)

References 3 publications

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“…Experimental measurements confirmed that the waved-type bottom had a better performance (by 42.1% at 0.4 V operating voltage) compared to the serpentine design . When additional parallel channels were added to the leaf-based design in Figure 9C, the obtained biomimetic mesh-type flow field exhibited more uniform gas distribution, a higher gas consumption ratio, generated less ohmic heat, but had a larger amount of condensed water near the utlet of the system (Chen et al, 2012).…”

Section: Plant Leaf-based Designsmentioning

confidence: 99%

“…It was demonstrated that such designs provide further uniform gas distribution across the GDL and higher PEMFC performance in comparison to the conventional serpentine FFP design, due to a more uniform pressure-and velocity distribution within the flow channels. This allows a more homogeneous diffusion of reactants onto the MEA active area (Kloess et al, 2009;Chen et al, 2012;Roshandel et al, 2012;Guo et al, 2014;Ouellette et al, 2018). It was detected, that interdigitated designs with >2 generations, need a relatively high pressure drop between adjacent branches to ensure better uniformity of the gas distributions without 'dead zones' between the branches.…”

Section: Plant Leaf-based Designsmentioning

confidence: 99%

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Flow Field Patterns for Proton Exchange Membrane Fuel Cells

et al. 2020

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Flow field designs for the bipolar plates of the proton exchange membrane fuel cell are reviewed; including the serpentine, parallel, interdigitated, mesh type or their mixtures, furthermore 2D circular and 3D tubular geometries, porous, fractal, and biomimetic flow fields. The advantages/disadvantages and tendencies from field optimizations are discussed. The performance of each flow field design is compared to the conventional serpentine flow field. Good flow field plates give uniform gas distributions, low pressure drop for transport, and sufficient rib area to provide high electronic conductivity. A good field should also prevent water condensation, remove water efficiently, and provide sufficiently high moisture content in the membrane. The demands on design are sometimes contradictory. Future work should aim for a flow field geometry and topology that produces uniform gas delivery at a low pressure-drop, and at the same time has an optimal channel shape for better water removal. It is concluded that for an area-filling gas distributor, the developments should aim to find a flow field in accordance with minimum entropy production, making an emphasis on multi-criteria optimization methods.

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Section: Plant Leaf-based Designsmentioning

confidence: 99%

Section: Plant Leaf-based Designsmentioning

confidence: 99%

Flow Field Patterns for Proton Exchange Membrane Fuel Cells

et al. 2020

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“…Increasing the bifurcation number thus decreasing the channel cross-section contributes to fuel cell performance in also bioinspired flow patterns as happens in fuel cells, which has conventional flow fields. 77 On the other hand, bifurcation addition to conventional flow fields like parallel flow field which already has low pressure drop along flow length does not serve a significant contribution to pressure drop. After all, it is found that bifurcation addition is prone to provide more effective reactant distribution on the active surface.…”

Section: Bioinspired Flow Field Patternsmentioning

confidence: 99%

Polymer electrolyte membrane fuel cell flow field designs and approaches for performance enhancement

Celik

Karagöz

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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Polymer electrolyte membrane fuel cells are carbon-free electrochemical energy conversion devices that are appropriate for use as a power source on vehicles and mobile devices emerging with their high energy density, lightweight structure, quick startup and lower operating temperature capabilities. However, they need more developments in the aspects of reactant distribution, less pressure drops, precisely balanced water content and heat management to achieve more reliable and higher overall cell performance. Flow field development is one of the most important fields of study to increase cell performance since it has decisive effects on performance parameters, including bipolar plate, and thus fuel cell weight. In this study, recent developments on conventional flow field designs to eliminate their weaknesses and innovative design approaches and flow field architectures are obtained from patent databases, and both numerical and experimental scientific studies. Fundamental designs that create differences are introduced, and their effects on the performance are discussed with regard to origin, objective, innovation strategy of design besides their strength and probable open development ways. As a result, significant enhancements and design strategies on flow field designs in polymer electrolyte membrane fuel cells are summarized systematically to guide prospective flow field development studies.

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“…In recent years, some new flow fields have emerged, such as intersecting flow field [11], spiral flow field [12], tree-like flow field [13] and radial flow field [14,15]. In addition, Toyota Mirai [16,17] developed a 3D complex flow field good at water management and oxygen delivery, but the channel structure is complex, costly and difficult to process.…”

Section: Introductionmentioning

confidence: 99%

Radial Flow Field of Circular Bipolar Plate for Proton Exchange Membrane Fuel Cells

Zhu¹,

Zheng²

2019

IJHT

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The channel structure of flow field is an important influencing factor of the operation and performance of proton exchange membrane fuel cell (PEMFC). Based on circular bipolar plate, three radial flow fields, namely, Radial-I, Radial-II and Radial-III, with different structures were created, and compared to disclose the effects of radial channel on the flow field for the PEMFC. The results show that radial flow fields clearly outperformed traditional flow fields like parallel, single serpentine and multiple serpentine flow fields. Radial-II has the highest current density and power density than any other flow field. The channel and rib widths of radial flow field have greater impacts on PEMFC performance than channel depth. Radial flow field can effectively improve the water discharge and reduce the pressure drop of the PEMFC. The research findings shed new light on the performance improvement of the PEMFC.

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The Impact on PEMFC of Bionic Flow Field with a Different Branch

Cited by 49 publications

References 3 publications

Flow Field Patterns for Proton Exchange Membrane Fuel Cells

Flow Field Patterns for Proton Exchange Membrane Fuel Cells

Polymer electrolyte membrane fuel cell flow field designs and approaches for performance enhancement

Radial Flow Field of Circular Bipolar Plate for Proton Exchange Membrane Fuel Cells

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