Contribution and investigation to compare models parameters of (PEMFC), comprehensives review of fuel cell models and their degradation

Blal, Mohamed; Benatiallah, A.; Neçaïbia, Ammar; Lachtar, Salah; Sahouane, Nordine; Boutarfaïa, Ahmed

doi:10.1016/j.energy.2018.11.095

Cited by 96 publications

(26 citation statements)

References 82 publications

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“…The literature on the modeling of fuel cells is expansive (see, for example, [9,[13][14][15][16][17][18][19][20][21]). The fuel cell is a complex, non-linear system, and not all aspects of the physics, chemistry and engineering of the system are completely understood yet.…”

Section: A Brief Review Of the Literaturementioning

confidence: 99%

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A New Model for Constant Fuel Utilization and Constant Fuel Flow in Fuel Cells

Chakraborty

2019

Applied Sciences

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This paper presents a new model of fuel cells for two different modes of operation: constant fuel utilization control (constant stoichiometry condition) and constant fuel flow control (constant flow rate condition). The model solves the long-standing problem of mixing reversible and irreversible potentials (equilibrium and non-equilibrium states) in the Nernst voltage expression. Specifically, a Nernstian gain term is introduced for the constant fuel utilization condition, and it is shown that the Nernstian gain is an irreversibility in the computation of the output voltage of the fuel cell. A Nernstian loss term accounts for an irreversibility for the constant fuel flow operation. Simulation results are presented. The model has been validated against experimental data from the literature.

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Section: A Brief Review Of the Literaturementioning

confidence: 99%

“…For the constant fuel utilization operation, Equations (11), (12), (20) and (23) show that p H 2 , p O 2 , and p H 2 O all are directly proportional to (i.e., increase linearly with) the input fuel flow rate. This is shown in Figure 3, where the straight lines have been obtained using the parameter values in Table 1.…”

Section: Constant Fuel Utilizationmentioning

confidence: 99%

A New Model for Constant Fuel Utilization and Constant Fuel Flow in Fuel Cells

Chakraborty

2019

Applied Sciences

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“…Proton exchange membrane fuel cell (PEMFC) has attracted the attention of more and more people because of its high efficiency and pollution-free advantages. 1 It has great potential as an alternative power unit in the portable and transportation sectors. 2 But there are still some key issues that need to be resolved before it can be mass commercialization.…”

Section: Introductionmentioning

confidence: 99%

Rapid degradation characteristics of an air‐cooled PEMFC stack

et al. 2020

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Summary Durability is one of the obstacles to the large‐scale commercialization of proton exchange membrane fuel cell (PEMFC) stacks. Understanding its decay behavior is a prerequisite for improving durability. In this study, rapid degradation characteristics of an air‐cooled PEMFC stack are investigated. Due to the simultaneous presence of various degradation sources, the maximum power of the PEMFC stack has been reduced by 39.6% after just 74.6 h of operations. Performance degradation characteristics are sought by analyzing the cell voltage, temperature distribution, ion chromatography, and surface morphology of the gas diffusion layer. The result shows that abnormal cell voltage and temperature distribution can reflect the problematic location. The fluoride ion emission rate is 0.111 mg/day, which proves that the membrane has been seriously degraded. Contact angle reduction and impurities attached to the surface of the gas diffusion layer lead to the water management failure. It is also found that the main factor for performance degradation could be different under different current conditions. And more information can be found under higher current conditions during monitoring the decay of PEMFCs. This study helps to deepen the understanding of performance degradation characteristics.

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“…In the past two decades, CFD models have been extensively developed and applied to investigate factors influencing durability and degradation rates of materials determining the lifetime of fuel cells [10,[20][21][22][23][24][25][26][27]. Gidwani et al [20] studied durability and degradation of PEM fuel cells with a focus on carbon corrosion at electrodes.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CFD Simulation of an Industrial PEM Fuel Cell with Local Degradation Effects

et al. 2020

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The polymer electrolyte membrane (PEM) fuel cell model of a commercial software package is presented. The basic performance model is extended by two chemical degradation effects: ionomer degradation and carbon corrosion including platinum oxidation. The ionomer degradation model describes the ionomer mass loss due to hydrogen peroxide formation and subsequent attack of the ionomer by radicals. The carbon corrosion model calculates the carbon mass loss caused by carbon oxidation and the active area reduction due to platinum oxidation. The degradation models are coupled with an agglomerate model of the catalyst layer. The model is validated against measurements on an industrial cell. For these measurements, the cell is equipped with a segmented measuring board, which is used to measure the current density distribution and high frequency resistance of every segment. In order to test the predictability of the model under different operating conditions, measurements for stoichiometry and pressure variations are carried out. Calculated and measured current density distributions of the cell, aged by an accelerated stress test, are compared for the validation of the degradation model. Moreover, 3D simulation results of the fresh and aged cells are analyzed in detail and the influence of operating conditions on fuel cell aging is pointed out.

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Contribution and investigation to compare models parameters of (PEMFC), comprehensives review of fuel cell models and their degradation

Cited by 96 publications

References 82 publications

A New Model for Constant Fuel Utilization and Constant Fuel Flow in Fuel Cells

A New Model for Constant Fuel Utilization and Constant Fuel Flow in Fuel Cells

Rapid degradation characteristics of an air‐cooled PEMFC stack

CFD Simulation of an Industrial PEM Fuel Cell with Local Degradation Effects

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