کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7736184 | 1497964 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The characteristic of strontium-site deficient perovskites SrxFe1.5Mo0.5O6âδ (x = 1.9-2.0) as intermediate-temperature solid oxide fuel cell cathodes
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The characteristic of strontium-site deficient perovskites SrxFe1.5Mo0.5O6âδ (x = 1.9-2.0) as intermediate-temperature solid oxide fuel cell cathodes The characteristic of strontium-site deficient perovskites SrxFe1.5Mo0.5O6âδ (x = 1.9-2.0) as intermediate-temperature solid oxide fuel cell cathodes](/preview/png/7736184.png)
چکیده انگلیسی
As the cathodes for intermediate-temperature solid oxide fuel cells (IT-SOFCs), A-site deficient SrxFe1.5Mo0.5O6âδ (x = 1.9-2.0) (SxFM) materials have been successfully synthesized using the sol-gel combustion method. In the perovskite structure of these oxides, the unit cell varies from pseudocubic to cubic with increasing deficiency. Thermal expansion coefficient of SxFM has also been measured and compared with that of Scandium-stabilized zirconium (ScSZ) electrolyte. X-ray photoelectron spectroscopy (XPS) results indicate that the Sr-deficiency has changed the proportion of Fe2+/Fe3+ and Mo6+/Mo5+ ratios, which directly influences the conductivity of SxFM materials. S1.950FM possesses the largest electrical conductivity and the lowest polarization resistance (Rp) among all the samples. The maximum power densities of a single cell with the S1.950FM cathode reaches 1083 mW cmâ2, and the area specific resistance value is 0.17 Ω cm2 at 800 °C. These results indicate that the A-site deficiency could promote the electrochemical performance of SFM materials as cathodes for IT-SOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 268, 5 December 2014, Pages 771-777
Journal: Journal of Power Sources - Volume 268, 5 December 2014, Pages 771-777
نویسندگان
Guoquan Yang, Jie Feng, Wang Sun, Ningning Dai, Mingyue Hou, Xiaoming Hao, Jinshuo Qiao, Kening Sun,