02926nam a2200265Ia 4500003001000000005001700010040000900027245018900036490010100225520190900326650003302235650001802268650001302286650003402299650001302333650002602346700001402372700001502386700001602401700001502417700001502432700001702447856015502464008004102619MX-MdCICY20260521091757.0  cCICY10aNumerical analysis of the relation between the porosity of the fuel electrode support and functional layer, and performance of solid oxide fuel cells using computational fluid dynamics0 aInternational Journal of Hydrogen Energy. 52, 936-951, 2024, DOI: 10.1016/j.ijhydene.2023.06.1663 aThe development of the hydrogen industry brings new technological challenges. Solid oxide fuel cells (SOFCs) seem to be one of the leading devices for hydrogen conversion and its production while operating in its reverse mode (as an electrolyser). Fine-tuning of SOFC microstructure might extend cells life and boost their performance. The article presents original numerical studies of the performance of solid oxide fuel cells, based on the OpenFuelCell model, extended by fuel and oxidant concentration loss equations. Transport phenomena in the porous structure of the anode functional layer (AFL) and the anode support layer (ASL) were simulated using the modified Fick's law (MFL) and the Knudsen diffusion coefficient. The presented research focuses on the influence of fuel distribution in fuel electrode of SOFC together with reacting zones and on the influence of AFL and ASL microstructure characteristics on cell performance. The studies included porosity in the range of 30%-60% for both types of anode layers. The obtained results showed a significant impact of the porosity characteristics on the SOFC performance and indicated the possible direction for further improvement. Numerical studies have shown that an increase in anode layers porosity of 30% allows for an increase in cell efficiency of even 15%. Experimental, as well as numerical results, showed that above a porosity of 49%, further increasing the porosity has no strong effect on the results. Also, a novelty in the work and an important part of it is the comparison of the impact of microstructure manipulation of the two anodic layers. Improvement of ASL microstructure allows to better, more homogeneous, fuel distribution inside the anode. Additionally, it increases the concentration of the fuel in the functional layer by up to 8%, which leads to increase in SOFC performance. © 2023 Hydrogen Energy Publications LLC14aCOMPUTATIONAL FLUID DYNAMICS14aGAS DIFFUSION14aHYDROGEN14aMICROSTRUCTURAL MODIFICATIONS14aPOROSITY14aSOLID OXIDE FUEL CELL12aMachaj K.12aKupecki J.12aNiemczyk A.12aMalecha Z.12aBrouwer J.12aPorwisiak D.40uhttps://drive.google.com/file/d/1dsyCgvbnm9TkiMRvoIT0WuZFJJ6T8aR0/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta @cicy.edu.mx250602s9999    xx |||||s2   |||| ||und|d