Understanding the influence of MEA interfaces properties on PEMFC mechanical behavior through numerical analysis

Ouerghemmi, Marwa; Carral, Christophe; Mele, Patrice

doi:10.1016/j.ijhydene.2024.04.200

Cited by 2 publications

(3 citation statements)

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“…Materials model behavior.-The material model behavior used in this study is similar to that of Ouerghemmi et al 49 or Kusoglu et al 30 The main equations governing the elasto-plastic model are detailed below.…”

Section: Methodsmentioning

confidence: 99%

“…This model has been widely used in the literature. 28,32,49 GDL.-Modeling of the irreversible mechanical behavior under compressive stress…”

Section: Methodsmentioning

confidence: 99%

“…These facts can lead to errors in the in-plane stress induced by the clamping process or in the compressive stress under the land due to overstresses induced by the land/channel pattern. Ouerghemmi et al 49 proposed a numerical study of the influence of the interfacial properties on the mechanical behavior of PEMFC showing a relationship between the plastic deformation of the membrane and the interfacial properties of the MEA components. Ramani et al 45 used simulation to highlight the beneficial effect of enhanced adhesion between Catalyst Coated Membrane (CCM) and GDL.…”

Section: Pemfcmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Investigation of the Irreversible Behavior of GDL Under Cyclic Hygrothermal Loading

Mons-Quendo,

Blachot,

Poirot-Crouvezier

et al. 2024

J. Electrochem. Soc.

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Performances of proton exchange membrane fuel cells (PEMFCs) is impacted by the physical properties of the gas diffusion layer (GDL). These properties, including thickness and porosity, are irreversibly modified by diverse processes, notably by the clamping of the PEMFC or the swelling of the membrane during cell operation. This can result in irreversible deformation of the GDL, with consequent impact on the performance and durability of the PEMFCs. This phenomenon, which is difficult to apprehend experimentally, is also challenging to investigate numerically. An elastoplastic law related to the irreversible strain of the GDL after compression is proposed in this study and implemented in a finite element model. Variations in GDL’s properties during humidity and temperature cycles are studied depending on PEMFC clamping methods using numerical simulations. The influences of processing conditions, i.e. the membrane electrode assembly hot pressing process, on GDLs properties are also investigated numerically. The results demonstrate the necessity to take into account the evolution of the mechanical properties of PEMFC components, with a significant influence of clamping process, life load and hot pressing process on the physical properties of the GDL as thickness, porosity, or intrusion in the gas channels.

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Section: Methodsmentioning

confidence: 99%

“…This model has been widely used in the literature. 28,32,49 GDL.-Modeling of the irreversible mechanical behavior under compressive stress…”

Section: Methodsmentioning

confidence: 99%