@article{Bertei:2016:10.1016/j.ijhydene.2016.09.100, author = {Bertei, A and Ruiz-Trejo, E and Tariq, F and Yufit, V and Atkinson, A and Brandon, NP}, doi = {10.1016/j.ijhydene.2016.09.100}, journal = {International Journal of Hydrogen Energy}, pages = {22381--22393}, title = {Validation of a physically-based solid oxide fuel cell anode model combining 3D tomography and impedance spectroscopy}, url = {http://dx.doi.org/10.1016/j.ijhydene.2016.09.100}, volume = {41}, year = {2016} }
TY - JOUR AB - This study presents a physically-based model for the simulation of impedance spectra in solid oxide fuel cell (SOFC) composite anodes. The model takes into account the charge transport and the charge-transfer reaction at the three-phase boundary distributed along the anode thickness, as well as the phenomena at the electrode/electrolyte interface and the multicomponent gas diffusion in the test rig. The model is calibrated with experimental impedance spectra of cermet anodes made of nickel and scandia-stabilized zirconia and satisfactorily validated in electrodes with different microstructural properties, quantified through focused ion beam SEM tomography. Besides providing the material-specific kinetic parameters of the electrochemical hydrogen oxidation, this study shows that the correlation between electrode microstructure and electrochemical performance can be successfully addressed by combining physically-based modelling, impedance spectroscopy and 3D tomography. This approach overcomes the limits of phenomenological equivalent circuits and is suitable for the interpretation of experimental data and for the optimisation of the electrode microstructure. AU - Bertei,A AU - Ruiz-Trejo,E AU - Tariq,F AU - Yufit,V AU - Atkinson,A AU - Brandon,NP DO - 10.1016/j.ijhydene.2016.09.100 EP - 22393 PY - 2016/// SN - 1879-3487 SP - 22381 TI - Validation of a physically-based solid oxide fuel cell anode model combining 3D tomography and impedance spectroscopy T2 - International Journal of Hydrogen Energy UR - http://dx.doi.org/10.1016/j.ijhydene.2016.09.100 UR - http://hdl.handle.net/10044/1/40461 VL - 41 ER -
Transition to Zero Pollution is a flagship initiative of the Imperial's Academic Strategy, with a vision to realise a sustainable zero pollution future. The initiative brings researchers from different disciplines together to take a systems approach to tackling pollution in all its forms.