Influence of local porosity and local permeability on the performances of a polymer electrolyte membrane fuel cell

Assembly techniques for proton exchange membrane fuel cell stack: A literature review

“…The gradual distribution of PTFE in the GDL is usually used to improve the interaction between conductivity and porosity [137]. This type of GDL with a porosity gradient can reduce the water content near the BPP side, avoid flooding, and maintain a certain humidity on the CL side [138,139].…”

Investigations on the Morphology and Water Inventory of GDLs Using µ-Computer Tomography and Monte Carlo Modeling

“…These are commonly called µ-CT devices and, due to the much lower price per visualization experiment, they allow for routine investigations and comparative material studies. In recent years, knowledge and awareness of the crucial influence of the non-uniform pressure distribution applied to the GDL material within the cell upon cell performance [4,5,6] has increased. In spite of that, to the best of our knowledge there have been no attempts so far to investigate the material properties under realistic load conditions by means of X-ray techniques; yet first inspiring results of a 3-D visualization and characterization study on uncompressed GDLs employing this technique have been recently published [7].…”

Numerical study of inhomogeneous deformation of gas diffusion layers on proton exchange membrane fuel cells performance

“…Besides, there remains a lot of further analysis via numerical studies regarding the influence of the compressional deformation on the variation of the transport properties based on experimental measurement. For instance, Akiki et al [45] presented a two-dimensional model to simulate the distribution of local porosity and the local permeability in GDL induced by different clamping force. Molaeimanesh et al [46] captured GDL microstructural changes via pore-scale simulation technique using lattice Boltzmann method (LBM), which has a great capability in dealing with complicated pore structures.…”