Homogenization of a catalyst layer model for periodically distributed pore geometries in PEM fuel cells

摘要

We formally derive an effective catalyst layer model comprising the reductionof oxygen for periodically distributed pore geometries. By assumption, thepores are completely filled with water and the surrounding walls consist ofcatalyst particles which are attached to an electron conducting microstructure.The macroscopic transport equations are established by a multi-scale approach,based on microscopic phenomena at the pore level, and serve as a first steptoward future optimization of catalyst layer designs.