Print Email Facebook Twitter A detailed look into hydrogen electrochemical oxidation on ceria anodes Title A detailed look into hydrogen electrochemical oxidation on ceria anodes Author Tabish, A.N. (TU Delft Energy Technology; University of Engineering and Technology Lahore) Patel, H.C. (Dutch Institute for Fundamental Energy Research) Schoonman, J. (TU Delft ChemE/Materials for Energy Conversion and Storage) Aravind, P.V. (TU Delft Energy Technology) Date 2018 Abstract Using the Nernst-Planck-Poisson model and a detailed reaction mechanism, we studied the hydrogen electrochemical oxidation on a ceria anode. Resistances caused by surface kinetics, and bulk transport of oxide-ion vacancies and electrons are computed individually to identify the dominant resistive process. The effect of operating conditions like temperature and gas-phase composition on the polarization resistance is evaluated and compared with the experimental data obtained by Electrochemical Impedance Spectroscopy (EIS). The rate-determining step is found to be the charge-transfer reaction in which hydrogen adsorbs at the surface oxide ions and forms hydroxyls along with the charge-transfer to adjacent cerium ions. Based on the rate-determining step, the exchange-current density is also calculated and validated with the experimental data. Subject CeriaElementary kineticsNPP modelPattern anodesSOFC To reference this document use: http://resolver.tudelft.nl/uuid:a69468ad-23b1-420d-89b1-3da453ac442c DOI https://doi.org/10.1016/j.electacta.2018.05.058 Embargo date 2020-07-07 ISSN 0013-4686 Source Electrochimica Acta, 283, 789-797 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2018 A.N. Tabish, H.C. Patel, J. Schoonman, P.V. Aravind Files PDF A_detailed_look_into_hydr ... anodes.pdf 3.49 MB Close viewer /islandora/object/uuid:a69468ad-23b1-420d-89b1-3da453ac442c/datastream/OBJ/view