Thermomechanical characterisation of commercial Gas Diffusion Layers of a Proton Exchange Membrane Fuel Cell for high compressive pre-loads under dynamic excitation

Faydi, Younes; Lachat, Rémy; Meyer, Yann

doi:10.1016/j.fuel.2016.05.074

Cited by 27 publications

(11 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The acquired data for thickness versus force were converted into stress versus strain curves, as shown in Figure 4. In Reference [11], although the impact of temperature on GDL’s compressive behavior was discussed, it paid more attention to the GDL’s dynamic compression modulus at the static stress of 3.8 MPa, under a wide temperature range, without sufficiently considering the test load ranges to cover the overall nonlinear properties.…”

Section: Resultsmentioning

confidence: 99%

“…The main categories of the research are as follows: mechanical compression behavior [11], pressure distribution [12], electrical properties [13,14], and material structural integrity [15,16]. Faydi et al [11] studied the dynamic compression coefficients of GDLs, over a temperature range from 25 °C to 400 °C, taking into account the expected vibration effects of fuel cell load conditions. They found that the dynamic compression factor of GDLs linearly increases up to the maximum temperature of 280 °C, after which, it then starts to decrease.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Investigation of the Compressive Behavior of Polymer Electrode Membrane Fuel Cell’s Gas Diffusion Layers under Different Temperatures

2018

View full text Add to dashboard Cite

In this paper, a commercial gas diffusion layer is used, to quantitatively study the correlation between its compressive characteristics and its operating temperature. In polymer electrode membrane fuel cells, the gas diffusion layer plays a vital role in the membrane electrode assembly, over a wide range of operating temperatures. Therefore, understanding the thermo-mechanical performance of gas diffusion layers is crucial to design fuel cells. In this research, a series of compressive tests were conducted on a commercial gas diffusion layer, at three different temperatures. Additionally, a microscopical investigation was carried out with the help of a scanning electron microscope, to study the evolution and development of the microstructural damages in the gas diffusion layers which is caused by the thermo-mechanical load. From the obtained results, it could be concluded that the compressive stiffness of the commercial gas diffusion layer depends, to a great extent, on its operational temperature.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Investigation of the Compressive Behavior of Polymer Electrode Membrane Fuel Cell’s Gas Diffusion Layers under Different Temperatures

2018

View full text Add to dashboard Cite

show abstract

“…Some investigations considered that GDLs were linear and isotropic materials without in-depth studies, and the constant Young's modulus [19,20] was employed in the fuel cell stress simulation. In practice, GDLs have been experimentally characterized with nonlinear compressive properties [21][22][23]. Additionally, some researchers have made considerable efforts to develop reliable numerical models [24][25][26][27] to explain the nonlinearity in the compressive performance of GDLs.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Mechanical Properties of a Carbon Paper Gas Diffusion Layer through a 3-D Nonlinear and Orthotropic Constitutive Model

Chen

Ke²,

Ying-song³

et al. 2021

Energies

View full text Add to dashboard Cite

The mechanical loads that gas diffusion layers (GDLs) withstand in polymer electrolyte membrane fuel cell (PEMFC) stacks are sensitive to the assembly and working conditions. The mechanical properties of GDLs mostly depend on their composition materials, microstructural characteristics, operation conditions, etc. An accurate and comprehensive understanding of the mechanical performance of GDLs is significant for predicting the stress distribution and improving the assembly technology of PEMFC stacks. This study presented a novel 3-D nonlinear and orthotropic constitutive model of a carbon paper GDL to represent the material stiffness matrix with its compressive, tensile, and shear properties. Numerical simulations were performed based on the 3-D constitutive model, and the proposed 3-D model was validated against the experimental data reported previously. It is found that the simulation results of the 3-D constitutive model show a good agreement with the experimental results. Besides, the novel 3-D nonlinear and orthotropic model was applied in the overall stress simulation of a simplified PEMFC unit cell, compared to a conventional 3-D linear and isotropic model, and the simulation results of the two models show a significant difference.

show abstract

“…A Proton Exchange Membrane Fuel Cell is a mechanically constrained stack composed of several heterogeneous elements 1 . There are two causes of the membrane and GDL degradation: The presence of transition metals in the membrane catalyzes the conversion of H2O2 in radicals causing chemical degradation of the membrane.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of Effect of Contact Pressure on Mechanical Behavior of Gas Diffusion Layers (GDL) and PFSA Membrane Assembly

Ettouhami¹,

Atifi²,

Mounir³

et al. 2019

Mediterr.J.Chem.,

View full text Add to dashboard Cite

In this study, a Finite Element model has been implemented based on numerical modelling simulations to predict the mechanical behaviour of a representative unit of the fuel cell stack. The GDL deformation has been modelled as a combination of elastic deformation and fibres slippage. Mechanical stresses distribution and deformation are presented concerning the previous model work l with nonlinear orthotropic behaviour of the GDL. The results also show that the state of the stresses in the membrane are highly heterogeneous and largely exceed its elastic limit. The results show that the influence of the temperature variation is not significant in generating stresses. However, the influence of the moisture variation is very significant in generating stresses. Therefore, the increase in relative humidity from 30% to 90° % at T=25°C causes an increase in the maximum Von Mises stress of 0.0836MPa.

show abstract

Thermomechanical characterisation of commercial Gas Diffusion Layers of a Proton Exchange Membrane Fuel Cell for high compressive pre-loads under dynamic excitation

Cited by 27 publications

References 31 publications

An Investigation of the Compressive Behavior of Polymer Electrode Membrane Fuel Cell’s Gas Diffusion Layers under Different Temperatures

An Investigation of the Compressive Behavior of Polymer Electrode Membrane Fuel Cell’s Gas Diffusion Layers under Different Temperatures

Investigation on Mechanical Properties of a Carbon Paper Gas Diffusion Layer through a 3-D Nonlinear and Orthotropic Constitutive Model

Numerical simulation of Effect of Contact Pressure on Mechanical Behavior of Gas Diffusion Layers (GDL) and PFSA Membrane Assembly

Contact Info

Product

Resources

About