Foti, GyoergyJaccoud, ArnaudFalgairette, CyrilComninellis, Christos2012-01-092012-01-092012-01-09200910.1007/s10832-007-9352-7https://infoscience.epfl.ch/handle/20.500.14299/76472WOS:000271982300015The electrochemical behavior of Pt/YSZ electrodes in oxygen containing atmosphere at 450 A degrees C has been investigated by double-step chronoamperometry and programmed linear sweep cyclic voltammetry. The response of the O-2(g),Pt/YSZ system in these experiments could be separated into a time dependent and a steady state contribution, the former being dominated by pseudocapacitive processes. It is proposed that Pt-O type species were stored via different processes at three different locations in the O-2(g),Pt/YSZ system: (1) Build-up of a platinum oxide monolayer at the Pt/YSZ binary interface. (2) Formation of Pt-O species at the triple phase boundary and their spreading-out along the Pt/gas interface. (3) Growth of the platinum oxide layer from the binary Pt/YSZ interface toward the bulk of the platinum electrode.Platinum electrodeYszCharge storagePseudocapacitancePt,O-2(G)/Stabilized Zirconia InterfacesStabilized ZirconiaElectrode-ReactionPlatinumOxidationOxygenCelltext::journal::journal article::research article