کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7720429 | 1497503 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sm0.5Sr0.5CoO3-Ce1.8Sm0.2O1.9 electrodes enhanced by Sm0.5Sr0.5CoO3 impregnation for proton conductor based solid oxide fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sm0.5Sr0.5CoO3-Ce1.8Sm0.2O1.9 electrodes enhanced by Sm0.5Sr0.5CoO3 impregnation for proton conductor based solid oxide fuel cells Sm0.5Sr0.5CoO3-Ce1.8Sm0.2O1.9 electrodes enhanced by Sm0.5Sr0.5CoO3 impregnation for proton conductor based solid oxide fuel cells](/preview/png/7720429.png)
چکیده انگلیسی
Sm0.5Sr0.5CoO3âδ-Ce0.8Sm0.2O2âδ (SSC-SDC) composites, which are often used as the cathodes for solid oxide fuel cells (SOFCs) with oxygen-ion conducting electrolytes, have been recently shown to be also applicable in SOFCs based on proton conductors such as BaZr0.1Ce0.7Y0.2O3âδ (BZCY). The electrochemical performances of blank SSC-SDC electrodes on BZCY electrolytes are substantially improved in this work by impregnating SSC nanoparticles additionally. When the loading increases, the interfacial polarization resistance of the symmetric cell decreases gradually at first, notably when it exceeds 14 wt.%, and to the lowest value at about 22 wt.%. Furthermore, impregnating SSC reduces the low-frequency-arc resistance that corresponds to the surface exchange step. In addition, impregnating SSC reduces the activation energy for oxygen reduction from 1.14 to 0.70 eV, thus resulting in significantly improvement on electrode performance at the reduced temperatures for SOFCs based on proton conductors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 6, 14 February 2014, Pages 2685-2691
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 6, 14 February 2014, Pages 2685-2691
نویسندگان
Feng Su, Yanxiang Zhang, Meng Ni, Changrong Xia,