Dipartimento di Chimica, Universitá degli Studi di Milano, Via C. Golgi 19, I-20133 Milano, Italy.
Phys Chem Chem Phys. 2013 Jun 14;15(22):8495-505. doi: 10.1039/c3cp44300k. Epub 2013 Feb 12.
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 (Ce(1-x)La(x)O(2-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.
掺杂氧化铈材料因其在固体氧化物燃料电池器件中的应用而受到广泛研究。在这项工作中，我们报告了在燃料电池工作条件下，镧掺杂氧化铈（Ce(1-x)La(x)O(2-x/2)，x = 0.25）的平均和局域结构演变。利用中子粉末衍射数据的常规 Rietveld 分析研究了掺杂对平均结构的影响。在空气和还原气氛下，采用非常硬的 X 射线研究了在高温下的无序程度和局域结构演变。
