Results on the high temp. oxidn. of Ni, as obtained when the metal is the anode of an electrochem. cell with Y2O3-stabilized ZrO2 (YSZ) as the electrolyte, are presented. Three-electrode cyclic voltammetry was used to study oxide growth at the YSZ|Pt paste (Ptp)|(NiO)Ni interface by a cell system where sintered Fe-wustite electrodes act both as ref. and counter electrodes. The anal. of the voltammetric curve was carried out by considering that an O-producing charge transfer occurs at the YSZ/Ptp interface and that the oxide grows under an external elec. field which inhibits the oxidn. kinetics. A method for calcg. the current/voltage curve of the growing oxide is also reported.
CERAMIC ELECTROLYTE CELLS IN HIGH-TEMPERATURE OXIDATION OF METALS / Gozzi, Daniele; Tomellini, M; Petrucci, L; Cignini, Pl. - In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - ISSN 0013-4651. - STAMPA. - 134:3(1987), pp. 728-733. [10.1149/1.2100541]
CERAMIC ELECTROLYTE CELLS IN HIGH-TEMPERATURE OXIDATION OF METALS
GOZZI, Daniele;
1987
Abstract
Results on the high temp. oxidn. of Ni, as obtained when the metal is the anode of an electrochem. cell with Y2O3-stabilized ZrO2 (YSZ) as the electrolyte, are presented. Three-electrode cyclic voltammetry was used to study oxide growth at the YSZ|Pt paste (Ptp)|(NiO)Ni interface by a cell system where sintered Fe-wustite electrodes act both as ref. and counter electrodes. The anal. of the voltammetric curve was carried out by considering that an O-producing charge transfer occurs at the YSZ/Ptp interface and that the oxide grows under an external elec. field which inhibits the oxidn. kinetics. A method for calcg. the current/voltage curve of the growing oxide is also reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
