کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9761584 | 1498420 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single chamber solid oxide fuel cells with integrated current-collectors
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
Single chamber solid oxide fuel cells (SC-SOFCs) based on the system Sm0.5Sr0.5CoO3âδ/Ce0.9Gd0.1O1.95/Ni-Ce0.8Gd0.2O1.90 were investigated. Pt-meshes that were embedded in both electrodes were used as current collectors in order to achieve low overpotentials. The cells generated 271 mW/cm2 at 500 °C and 468 mW/cm2 at 600 °C on a gas mixture of methane and air (CH4/O2 = 1.6) with a total flow of 1500 ml/min. The air flow was varied (260, 780, 1120, and 1340 ml/min) while the flow of methane was kept at 380 ml/min. It was found that the open circuit voltage (OCV) and the maximum power density (Pmax) were strongly dependent on the airflow and the operating temperature. The influences of Palladium-addition to the anode as well as Co-doping of the electrolyte on the OCV and Pmax have been studied and compared to an unmodified cell. Pd-containing anodes allow for higher power outputs at low airflow. The presence of Co in the electrolyte raises the OCV but decreases the maximum power density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 19â22, June 2005, Pages 1717-1722
Journal: Solid State Ionics - Volume 176, Issues 19â22, June 2005, Pages 1717-1722
نویسندگان
B.E. Buergler, M.E. Siegrist, L.J. Gauckler,