Thermodynamic analysis of a Proton Exchange Membrane fuel cell

Özgür, Tayfun; Yakaryilmaz, Ali Cem

doi:10.1016/j.ijhydene.2018.06.152

Cited by 36 publications

(4 citation statements)

References 21 publications

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“…The power density of the compensation flow field is also relatively high. Taking into account the operational voltage of a single cell is approximately 0.6 V, 30 the performance of the both flow fields at a current density of 1 A cm –2 is further discussed.…”

Section: Resultsmentioning

confidence: 99%

“…In fact, due to the limitation of single cell power, multiple single-layer cells need to be assembled into multilayer stacks to obtain higher power . Thus, in the stacking direction, there will be a superposition of nonuniformity . To conduct a more in-depth analysis of the PEMFC performance in the stack level working environment, the single cells are assembled into a five-layer stack, as shown in Figure d.…”

Section: Pemfc 3d Multiphysical Coupling Modelmentioning

confidence: 99%

“… 29 Thus, in the stacking direction, there will be a superposition of nonuniformity. 30 To conduct a more in-depth analysis of the PEMFC performance in the stack level working environment, the single cells are assembled into a five-layer stack, as shown in Figure 1 d.…”

Section: Pemfc 3d Multiphysical Coupling Modelmentioning

confidence: 99%

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Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Zhao,

Hu,

et al. 2024

ACS Omega

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The flow field design of the proton exchange membrane fuel cell (PEMFC) had a great impact on the performance and lifespan of the cell. To improve the uniformity of the substance component inside the PEMFC, referring to the serpentine flow field, a kind of compensating flow field is designed and investigated. Under the same conditions, the homogeneity of the two flow field structures is compared, and the influence of the homogeneity of two flow field distributions on the performance of the PEMFC is further analyzed. The polarization curve, maximum pressure difference at the inlet and outlet of the flow channel, and thermal stress generated by temperature gradients are used as performance indicators for evaluating the performance of the cell. The results show that after compensation, the distribution uniformity of each component in the flow field is improved, and the power density, water management, and thermal management capabilities are better than those in the traditional flow field design. Furthermore, the thermal performance of the single-layer cell and five-layer stack was compared. The results show that the more fuel cell layers, the greater the temperature difference within the cell, which will result in greater thermal stress. In the compensation flow field, the thermal stress of a single-layer unit is 14% lower than that of a serpentine flow field, and the thermal stress of a five-layer stack is 20% lower.

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Section: Resultsmentioning

confidence: 99%

Section: Pemfc 3d Multiphysical Coupling Modelmentioning

confidence: 99%

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Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Zhao,

Hu,

et al. 2024

ACS Omega

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“…Finally, the exergetic efficiency η ex is defined as the ratio between the net generated electrical power W and the exergy difference between reactants and products, as defined in Equation ( 5) above [48][49][50][51]:…”

Section: Q Andmentioning

confidence: 99%

Exergetic Performance of a PEM Fuel Cell with Laser-Induced Graphene as the Microporous Layer

et al. 2021

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The microporous layer (MPL) constitutes a critical component of the gas diffusion layer within the membrane electrode assembly (MEA) of a proton exchange membrane fuel cell (PEM FC). The MPL plays a fundamental role in various processes during FC operation: control of membrane humidification, heat distribution throughout the MEA, excess water removal from the cathode, and transportation of fuel to the reaction sites. Previously, we investigated the performance of a fuel cell unit employing an MPL based on laser-induced graphene (LIG) produced by the laser pyrolysis of polymeric (polyimide) substrates. The prototype LIG-based unit was tested over the typical range of relative humidity and temperature conditions. The polarization curves observed in that study displayed broad ohmic loss regions and high stability along the concentration loss regions, an interesting electrical behavior that justified developing the present voltage-current density study for the same FC prototype compared to one bearing a commercial pyrolytic carbon black MPL. The same operating conditions as in the first study were applied, in order to properly compare the performance efficiencies between the two systems; these are evaluated by considering the thermodynamic losses influence on the exergy efficiency, to exceed any limitations inherent in the classical energy efficiency analysis.

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Microwave-assisted solvothermal preparation of Zr-BDC for modification of proton exchange membranes made of SPEEK/PBI blends

et al. 2020

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Thermodynamic analysis of a Proton Exchange Membrane fuel cell

Cited by 36 publications

References 21 publications

Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Exergetic Performance of a PEM Fuel Cell with Laser-Induced Graphene as the Microporous Layer

Microwave-assisted solvothermal preparation of Zr-BDC for modification of proton exchange membranes made of SPEEK/PBI blends

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