کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6612722 | 459590 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative study of electrochemical properties of different composite cathode materials associated to stable proton conducting BaZr0.7Pr0.1Y0.2O3-δ electrolyte
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High-temperature proton conductor BaZr0.7Pr0.1Y0.2O3-δ (BZPY) was investigated as electrolyte for intermediate temperatures (400-800 °C) solid oxide fuel cells (IT-SOFCs), which exhibited excellent chemical stability in atmospheres containing CO2 and water vapor. In addition, both La0.4Sr0.6Co0.2Fe0.8O3-δ-BaZr0.7Pr0.1Y0.2O3-δ (LSCF-BZPY) and La0.4Sr0.6Co0.2Fe0.8O3-δ-Ce0.8Sm0.2O1.9 (LSCF-SDC) composite oxides were fabricated and evaluated as working cathodes for anode-supported IT-SOFCs based upon thin BZPY electrolytes. The single cells with LSCF-BZPY cathode showed the maximum power density of 86.7 mW cmâ2 at 700 °C and the calculated activation energy was 91.19 kJ mol-1. While the cells with LSCF-SDC cathode exhibited the higher maximum power density of 112.4 mW cmâ2 at 700 °C and the calculated activation energy was 101.61 kJ mol-1. The experimental results indicated that proton electron mixed conducting composite cathodes are more promising and beneficial than oxygen-ion electron mixed conducting composite cathodes for proton-conducting SOFCs during actual low operating temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 146, 10 November 2014, Pages 1-7
Journal: Electrochimica Acta - Volume 146, 10 November 2014, Pages 1-7
نویسندگان
Yihan Ling, Fang Wang, Ling Zhao, Xingqin Liu, Bin Lin,