کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298972 1498409 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ionic conductivity of Ce1−xNdxO2−x / 2
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Ionic conductivity of Ce1−xNdxO2−x / 2
چکیده انگلیسی

The electrical conductivity of sintered samples of Ce1−xNdxO2−x / 2 (0.01 ≤ x ≤ 0.2) was investigated in air as a function of temperature between 150 and 600 °C using AC impedance spectroscopy. The individual contribution of the bulk and grain boundary conductivities has been discussed in detail. In the low temperature range (< 350 °C), the activation enthalpy for bulk conductivity exhibited a shallow minimum at 3 mol% Nd, with a value of 0.68 eV. The activation enthalpy also produced a shallow minimum at 5 mol% Nd in the high temperature range (> 350 °C), with a value of 0.56 eV. It was shown that Ce1−xNdxO2−x / 2 is an electrolyte that obeys the Meyer Neldel rule. The bulk conductivity data measured by others for the same system has also been recalculated and re-evaluated to facilitate easier comparison with our own data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 7–8, 15 March 2006, Pages 669–676
نویسندگان
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