کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1294973 973647 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical performance of IT-SOFCs with a double-layer anode
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Electrochemical performance of IT-SOFCs with a double-layer anode
چکیده انگلیسی

A new type of anode with double layers, composed of an outer layer Ni-CeO2 (about 0.5 mm) with relatively large porosity and pore size and an inner layer adjacent to the electrolyte Ni-SDC (about 120 μm), was developed for direct utilization of methane fuel in low-temperature solid oxide fuel cells (SOFCs) with thin-film SDC electrolytes. Cells with this novel anode were fabricated using a tri-layer co-pressing technique. This anode microstructure is believed to lower the anodic concentration polarization when using methane as fuel. Impedance measurements show that the anode polarization resistance of the cell with the novel anode in H2 is only 0.02 Ω cm2 which is lower than a conventional Ni/SDC anode. However, it is about 0.2 Ω cm2 lower when using methane as fuel, which is consistent with the results of electrochemical measurements, inferring that the novel anode shows a relatively high catalytic activity towards methane than the conventional anode. The stability of the cell with the novel anode at 600 °C when using methane as fuel was also studied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 167, Issue 1, 1 May 2007, Pages 90–93
نویسندگان
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