Highly textured thin La0.8Sr0.2Ga0.8Mg0.2O3 films were grown by pulsed laser deposition on SrTiO3 buffered (001) MgO. Microstructural studies and X ray diffraction data indicate that films have a columnar structure as a consequence of the structural misfit between film and substrate. Columnar nanosized grains tend to coalesce in thicker films. Electrochemical impedance measurements show that the transport properties are limited by grain boundaries effects: thinner films having a lower conductivity and a higher activation energy.
Di Bartolomeo, E., D'Epifanio, A., Tebano, A., Pugnalini, C., Nan, Y., Balestrino, G., et al. (2011). Epitaxial thin film electrolytes for solid oxide fuel cells. In EFC 2011: Proceedings of the 4th European fuel cell Piero Lunghi conference and exhibition (pp.389-390). ENEA.
Epitaxial thin film electrolytes for solid oxide fuel cells
Di Bartolomeo E.;D'Epifanio A.;Tebano A.;Pugnalini C.;Balestrino G.;Licoccia S.
2011-01-01
Abstract
Highly textured thin La0.8Sr0.2Ga0.8Mg0.2O3 films were grown by pulsed laser deposition on SrTiO3 buffered (001) MgO. Microstructural studies and X ray diffraction data indicate that films have a columnar structure as a consequence of the structural misfit between film and substrate. Columnar nanosized grains tend to coalesce in thicker films. Electrochemical impedance measurements show that the transport properties are limited by grain boundaries effects: thinner films having a lower conductivity and a higher activation energy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
