کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1295617 1498407 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of co-dopant addition on the properties of yttrium and neodymium doped barium cerate electrolyte
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effect of co-dopant addition on the properties of yttrium and neodymium doped barium cerate electrolyte
چکیده انگلیسی

The paper discusses the Y and Nd doped barium cerate perovskites prepared by a modified Pechini method. The series prepared is described by the formula BaCe0.80YxNd0.2−x O3−δ. The BaCeO3 based powders, about 10–20 nm sized and uniformly shaped, were obtained through the calcination of the gel at 500 °C for 2 h. Their structures and ionic conductivities were characterized by X-ray diffraction and AC impedance spectroscopy. All the electrolytes were found to be barium cerate based solid solutions of perovskite type structures. Impedance spectra indicate that the grain boundary resistance of the specimen synthesized by this method is smaller than that of the samples prepared by a conventional solid-state method. The ionic conductivities of co-doped barium cerate were a factor of several times than that of the single-doped one at 673–1073 K. Among the electrolytes examined, the one co-doped with 5 mol% Nd and 15 mol% Y shows the best improvement in performance. These co-doped barium cerate are more ideal intermediate temperature (IT) electrolyte materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 11–12, April 2006, Pages 1041–1045
نویسندگان
, , , , ,