An X-Ray Tomography Based Lattice Boltzmann Simulation Study on Gas Diffusion Layers of Polymer Electrolyte Fuel Cells

摘要

This work reports a feasibility study into the combined full morphological reconstructionnof fuel cell structures using X-ray computed micro- and nanotomography and latticenBoltzmann modeling to simulate fluid flow at pore scale in porous materials. This worknprovides a description of how the two techniques have been adapted to simulate gasnmovement through a carbon paper gas diffusion layer (GDL). The validation work demonstratesnthat the difference between the simulated and measured absolute permeabilitynof air is 3%. The current study elucidates the potential to enable improvements in GDLndesign, material composition, and cell design to be realized through a greater understandingnof the nano- and microscale transport processes occurring within the polymernelectrolyte fuel cell.