Flow Field Effect on the Performance of Direct Formic Acid Membraneless Fuel Cells: A Numerical Study

Shyu, Jin‐Cherng; Hung, Sheng-Huei

doi:10.3390/pr9050746

Cited by 8 publications

(6 citation statements)

References 25 publications

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“…It exhibits the worst performance among the anode flow‐field plates applied in this study. The increases in power and current densities are also lower than those of the other flow‐field plate designs, because the glucose solution does not reach the entire flow path, owing to the characteristics of the parallel flow path, and it is difficult to disperse because of the low differential pressure [11,51,52] . Consequently, even if the channel width is increased, the performance is low because the glucose permeability is not sufficiently improved.…”

Section: Resultsmentioning

confidence: 96%

Flow Channel Architecture and Diffusion Characteristics of Nonenzymatic Electrochemical Glucose Fuel Cells with Proton Exchange Membrane

et al. 2022

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A nonenzymatic glucose fuel cell directly oxidizes glucose to gluconic acid as a Pt‐based abiotic catalyst in a proton exchange membrane environment and has various advantages (e. g., biocompatibility, chemical stability, high ionic conductivity). We report the permeability of a less hydrophobic diffusion layer for three flow‐field designs (serpentine, interdigitated, and parallel). In all cases, as the channel width of the flow path increases, the power density increases and the Ohmic resistance decreases. The serpentine shape (channel and rib widths: 1.5 and 0.5 mm, respectively) exhibits remarkable maximum power and current densities (cell voltage: 60 mV) of 103.4 μW cm−2 and 1,273 μA cm−2 compared to those of the parallel (46.5 μW cm−2 at 683 μA cm−2) and interdigitated (74.0 μW cm−2 at 878 μA cm−2) shapes, respectively. Furthermore, permeability and performance analyses according to the single‐cell temperature, glucose concentration, and flow rate changes provide various perspectives on glucose fuel cells.

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Section: Resultsmentioning

confidence: 96%

Flow Channel Architecture and Diffusion Characteristics of Nonenzymatic Electrochemical Glucose Fuel Cells with Proton Exchange Membrane

et al. 2022

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“…The simulations were compared to experimental data, showing that the serpentine channel geometry performed better. Moreover, Shyu and Hung [15] analyzed direct formic acid membraneless fuel cells (DFAMFCs) with different geometries of flow channels. In other words, the geometry configuration is crucial to understanding the complex process of any fuel cell.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis Of The Liquid Saturation At The Cathode Side Of A PEM Fuel Cell With Different Flow Paths

Ceballos,

Sierra,

Ordoñez

2024

Preprint

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The performance of fuel cells is greatly influenced by the design of the flow channels, making it one of the most significant factors impacting their overall performance. In this work, numerical simulations on serpentine, parallel, and interdigitated geometries are carried out using an open-source toolbox at 0.5, 0.4, and 0.3 V to observe the liquid water saturation distribution at the cathode side of a three-dimensional multiphase non-isothermal model of a Protonic Exchange Membrane Fuel Cell. The results indicate that the serpentine flow channel shows the maximum current density and the minimum saturation distribution. Also, it is shown that maximum saturation values are located at the edges of the membrane-electrode assembly. There is an important change in the ionic distribution which directly impacts the current density.

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“…The design of bipolar plates has an important influence on the reactant gas distribution of fuel cells. Not only can a suitable flow field improve fuel cell performance, but it can also reduce water flooding and improve fuel efficiency [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of PEM Fuel Cells with an Additional Outlet in the Parallel Flow Field

et al. 2021

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The design of bipolar plates is critical for improving the performance of proton exchange membrane fuel cells (PEMFCs). In this research, a new additional outlet based on a PEMFC’s parallel flow field was proposed, and three different positions of outlet were designed on the target side of gas flowing in parallel channels. The results revealed that the additional outlets are able to increase the gas speed through channels near the additional outlets, which results in a lower water saturation and a more uniform distribution of oxygen concentration at the interface between the catalyst layer (CL) and gas diffusion layer (GDL). With the variation of the outlet position in the target side, it was found that the additional outlet set in the middle of the target side exhibits the highest increase of peak power density, namely, 13%. Furthermore, the optimal position of the additional outlet was proved to be suitable for PEMFCs with various active surface areas, indicating the universality of the present results in the study.

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Flow Field Effect on the Performance of Direct Formic Acid Membraneless Fuel Cells: A Numerical Study

Cited by 8 publications

References 25 publications

Flow Channel Architecture and Diffusion Characteristics of Nonenzymatic Electrochemical Glucose Fuel Cells with Proton Exchange Membrane

Flow Channel Architecture and Diffusion Characteristics of Nonenzymatic Electrochemical Glucose Fuel Cells with Proton Exchange Membrane

Numerical Analysis Of The Liquid Saturation At The Cathode Side Of A PEM Fuel Cell With Different Flow Paths

Performance Enhancement of PEM Fuel Cells with an Additional Outlet in the Parallel Flow Field

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