Doped ceria materials are widely studied for their application in solid oxide fuel cell devices. In this work we report on the average and local structure evolution of La-doped ceria (Ce1 xLaxO2 x/2, x = 0.25) under fuel cells’ operating conditions. The effect of doping on the average structure is investigated using conventional Rietveld analysis of neutron powder diffraction data. The extent of disorder as well as the local structure evolution at high temperature are investigated by employing very hard X-rays under both air and reducing atmosphere.
In situ Pair Distribution Function study on lanthanum doped ceria / M. Coduri, M. Scavini, M. Brunelli, P.G. Masala. - In: PHYSICAL CHEMISTRY CHEMICAL PHYSICS. - ISSN 1463-9076. - 15:22(2013), pp. 8495-8505. [10.1039/c3cp44300k]
In situ Pair Distribution Function study on lanthanum doped ceria
M. CoduriPrimo
;M. ScaviniSecondo
;P.G. MasalaUltimo
2013
Abstract
Doped ceria materials are widely studied for their application in solid oxide fuel cell devices. In this work we report on the average and local structure evolution of La-doped ceria (Ce1 xLaxO2 x/2, x = 0.25) under fuel cells’ operating conditions. The effect of doping on the average structure is investigated using conventional Rietveld analysis of neutron powder diffraction data. The extent of disorder as well as the local structure evolution at high temperature are investigated by employing very hard X-rays under both air and reducing atmosphere.
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