کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290192 | 973320 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Porous Ag-Ce0.8Sm0.2O1.9 cermets as anode materials for intermediate temperature solid oxide fuel cells using CO fuel
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To study anode materials for intermediate temperature solid oxide fuel cells with Ce0.8Sm0.2O1.9 (CSO) electrolyte using CO fuel, highly porous Ag-CSO cermets are prepared with MgO pore former and characterized. A single cell with 45Ag-CSO anode (Ag content: 45Â wt%) is fabricated, tested, and compared with the similar cell with Cu-CeO2-CSO anode. The 45Ag-CSO cermet shows high porosity (47%), high electrical conductivity (1254Â SÂ cmâ1 at 923Â K in CO), high activity (0.58mmolCOminâ1gCat.â1) and stability for CO oxidation at 923Â K, and no carbon deposition. The single cell with 45Ag-CSO anode shows high open circuit voltage (1.13Â V at 923Â K and 1.11Â V at 973Â K with pure CO as the fuel and air as the oxidant), high maximum power density (MPD, 178.4Â mWÂ cmâ2 at 923Â K and 438.8Â mWÂ cmâ2 at 973Â K), and high stability (no apparent change in MPD over 100Â h test at 973Â K). This cell is much better in performance than the cell with Cu-CeO2-CSO anode. Given that the CSO electrolyte is 0.385Â mm thick, the performance is very encouraging. All the results suggest that the porous 45Ag-CSO cermet is an excellent anode material for ITSOFC with CSO electrolyte using CO fuel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 862-866
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 862-866
نویسندگان
Feng-Yun Wang, Guo-Bin Jung, Ay Su, Shih-Hung Chan, Xiao Hao, Yu-Chun Chiang,