کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10569583 | 973867 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of Pr/Gd co-doped ceria by using the citric acid-nitrate combustion method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and characterization of Pr/Gd co-doped ceria by using the citric acid-nitrate combustion method Synthesis and characterization of Pr/Gd co-doped ceria by using the citric acid-nitrate combustion method](/preview/png/10569583.png)
چکیده انگلیسی
A series of Ce0.8Gd0.2âxPrxO1.90 (xâ¯=â¯0-0.10) compositions have been synthesized by citric acid-nitrate combustion method for intermediate temperature solid oxide fuel cells (ITSOFCs). Characterization studies were carried out with X-ray diffraction (XRD), scanning electron microscopy (SEM) and AC impedance spectroscopy. X-ray diffraction results showed that a single-phase fluorite structure formed at a relatively low calcination temperature which is 600â¯Â°C. Dense Ce0.8Gd0.2âxPrxO1.90 pellets were successfully prepared by sintering at 1400â¯Â°C for 6â¯h. The relative density of Ce0.8Gd0.2âxPrxO1.90 samples was over 94% of the theoretical density. The two-probe AC impedance spectroscopy was used to study the ionic conductivity of co-doped ceria samples. According to the electrochemical impedance spectroscopy results, the conductivity of the Ce0.8Gd0.10Pr0.10O1.90 (ÏTotal,750 °Câ¯=â¯5.1â¯Ãâ¯10â2â¯S/cm) composition was found to be higher than that of gadolinia-doped ceria (Ce0.8Gd0.20O1.90 (ÏTotal,750 °Câ¯=â¯3.4â¯Ãâ¯10â2â¯S/cm). Due to higher ionic conductivity, it is thought that this composition can be a potential candidate to be used as an electrolyte material in ITSOFCs applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 326, 15 November 2018, Pages 69-76
Journal: Solid State Ionics - Volume 326, 15 November 2018, Pages 69-76
نویسندگان
Aliye Arabacı,