@article{8287, author = {A. N. Tabish and H. C. Patel and J. Schoonman and P. V. Aravind}, title = {A detailed look into hydrogen electrochemical oxidation on ceria anodes}, 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.}, year = {2018}, journal = {Electrochimica Acta}, volume = {283}, pages = {789-797}, month = {9/2018}, doi = {10.1016/j.electacta.2018.05.058}, language = {eng}, }