کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7712839 | 1497423 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performances of nickel-doped SmBaCo2O5+δ-Sm0.2Ce0.8O1.9 composite cathodes for IT-SOFC
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
SmBaCo1.7Ni0.3O5+δ-xSm0.2Ce0.8O1.9 (SBCN-xSDC, x = 0-50 wt.%) composite cathodes were prepared and characterized for potential use in intermediate-temperature solid oxide fuel cells (IT-SOFCs) based on an SDC electrolyte. The electrical conductivity and the thermal expansion coefficient (TEC) decreased with an increase in the SDC content of SBCN-xSDC composite cathodes. TEC values decreased from 15.59 Ã 10â6 Kâ1 for SBCN to 13.17 Ã 10â6 Kâ1 for SBCN-50SDC. Furthermore, the addition of SDC to the SBCN cathode improved its electrochemical performance. Among others, the SBCN-20SDC showed the lowest polarization resistance of 0.0272 Ω cm2 at 800 °C; an anode-supported single-cell configuration of Ni-SDC/SDC/SBCN-20SDC obtained a maximum power density of 628 mW cmâ2 at 800 °C. Even when the content of SDC was raised up to 50 wt.%, the electrochemical performance of SBCN-50SDC still exceeded that of pure SBCN. These results indicated that the SBCN-xSDC composite cathode is a promising material for IT-SOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 2, 12 January 2016, Pages 1176-1186
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 2, 12 January 2016, Pages 1176-1186
نویسندگان
Li-Na Xia, Jing You, Zhi-Ping He, Xiao-Wei Huang, Yan Yu,