Experimental and computational study on the dynamic interaction between load variation and back pressure control in a polymer electrolyte membrane fuel cell for automotive application

Kim, Dong Kyu; Koh, Jae Seon; Kim, Min Soo; Song, Han Ho

doi:10.1016/j.ijhydene.2015.07.101

Cited by 25 publications

(3 citation statements)

References 30 publications

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“…Among various flow field patterns, the most commonly used types are the serpentine flow field and the parallel flow field [20]. The single-channel serpentine flow field can effectively remove products based on a highpressure difference between the gas inlet and the outlet [21,22]. However, the parallel flow field can distribute concentrations of materials more evenly compared to other types of flow fields [1,23,24].…”

Section: Introductionmentioning

confidence: 99%

Influences of Flow Channel on Electrochemical Characteristics of Polymer Electrolyte Fuel Cells Humidified with NaCl Contained H2O

Yoo

Cho

2023

Sustainability

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In this study, the effects of flow field types on the electrochemical properties of polymer electrolyte membrane fuel cells (PEMFCs) humidified with NaCl solution are systematically investigated. The parallel flow field and serpentine flow field were used to investigate the PEMFCs. Long-term stability was evaluated for 20 h using chronoamperometry. Fuel cells with both parallel and serpentine flow fields showed a decrease in performance because of the NaCl solution. Interestingly, the PEMFC with the serpentine flow field showed significantly more severe degradation during long-term stability evaluation compared to the fuel cell with the parallel flow field. Electrochemical impedance spectroscopy analysis showed that a significant increase in faradaic resistance caused the degradation of the performance. After long-term stability examinations, regenerations of fuel cells were performed with deionized water at a constant voltage (0.4 V). After the regeneration, the performance of the fuel cells with the serpentine flow field was improved more (52.96%) than the PEMFC with the parallel flow field (1.22%).

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Section: Introductionmentioning

confidence: 99%

Influences of Flow Channel on Electrochemical Characteristics of Polymer Electrolyte Fuel Cells Humidified with NaCl Contained H2O

Yoo

Cho

2023

Sustainability

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“…Hence, several attempts have been reported to develop new components, e.g., membranes, catalyst layers, and GDLs, which can be applied under low RH operation [61‐67]. Furthermore, using back‐pressure devices, the fuel cell performance is enhanced under pressured atmosphere as this condition renders advantages, such as increased exchange current density of the reaction, improved kinetics, and mass transfer .…”

Section: Introductionmentioning

confidence: 99%

Effect of Porous Metal Flow Field in Polymer Electrolyte Membrane Fuel Cell under Pressurized Condition

et al. 2017

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A flow field represents an interesting research area related to polymer electrolyte membrane fuel cells (PEMFCs), as it is a component crucial for the distribution of gas‐phase reactants. In this study, a metal foam was characterized and applied as a flow field in a PEMFC unit cell. In addition, the electrochemical performance of the metal foam was compared with that of the commonly used serpentine flow field. At a relative humidity (RH) of 100%, no significant difference in performance was observed between the metal foam and serpentine flow field. However, the performance of a single cell with the metal foam was superior to that of the common flow field under an RH of 20% under pressurized conditions. Furthermore, the factors affecting fuel cell performance by application of the flow field were discussed.

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“…In a view to optimize the operational parameters, a designer must develop several trials/experiments to determine the change in objective function with relation to input factors and which parameters are most relevant, but this approach involves high cost in conducting the experiments. 27 Many publications in the literature discuss the influence of various factors on electrical performance, including as pressure, flow rate, and temperature, 28 influence of high flow velocity and temperature on the reaction kinetics and output voltage, 29 the effect of operating pressure, 30 the effect of inlet humidification, 31 and the effect of GDL parameters. 32 In all the works mentioned above, authors have analyzed the cell performance qualitatively by independently varying each parameter by keeping the remaining parameters as constant; Yet, the quantitative importance of each relevant operational parameter is not assessed.…”

mentioning

confidence: 99%

Sensitivity Analysis of Operational Parameters of a High Temperature-Proton Exchange Membrane Fuel Cell

K. P.,

Varghese,

Joseph

et al. 2023

J. Electrochem. Soc.

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The lack of widespread commercialization of High-Temperature Proton Exchange Membrane Fuel Cells (HT-PEMFC) is primarily due to their poor performance and durability. Various factors impact the performance of fuel cells, one such crucial factor being the operational parameters. Suitable operating conditions not only enhance the output cell performance but also extend a fuel cell’s life. Current research on the impact of operational factors on HT-PEMFC performance is largely qualitative in nature, with no quantitative indication of affecting the sensitivity of these parameters. In the present work, a three-dimensional, non-isothermal HT-PEMFC model developed earlier is used to investigate the influential sensitivities of five crucial operating parameters, each with four different levels, and is analyzed quantitatively using six evaluation indexes. The orthogonal/Taguchi method L16(45) is implemented to investigate the impact of operating parameters quantitatively. Further, the effect of each operating parameter on evaluation indexes under different operational current density regimes is investigated. The findings show that, of the parameters chosen, the working temperature and cathode pressure are the most sensitive to cell voltage and cathode overpotential distribution under all operating current density regimes. The findings would provide more precise recommendations for experimental research targeted at improving cell performance by optimizing operational parameters.

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Experimental and computational study on the dynamic interaction between load variation and back pressure control in a polymer electrolyte membrane fuel cell for automotive application

Cited by 25 publications

References 30 publications

Influences of Flow Channel on Electrochemical Characteristics of Polymer Electrolyte Fuel Cells Humidified with NaCl Contained H2O

Influences of Flow Channel on Electrochemical Characteristics of Polymer Electrolyte Fuel Cells Humidified with NaCl Contained H2O

Effect of Porous Metal Flow Field in Polymer Electrolyte Membrane Fuel Cell under Pressurized Condition

Sensitivity Analysis of Operational Parameters of a High Temperature-Proton Exchange Membrane Fuel Cell

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