کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10155495 1666351 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Image analysis of the porous yttria-stabilized zirconia (YSZ) structure for a lanthanum ferrite-impregnated solid oxide fuel cell (SOFC) electrode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Image analysis of the porous yttria-stabilized zirconia (YSZ) structure for a lanthanum ferrite-impregnated solid oxide fuel cell (SOFC) electrode
چکیده انگلیسی
Image analysis and quantification were performed on porous scaffolds for building SOFC cathodes using the two types of YSZ powders. The two powders (U1 and U2) showed different particle size distribution and sinterability at 1300 °C. AC impedance on symmetrical cells was used to evaluate the performance of the electrode impregnated with 35-wt.% La0.8Sr0.2FeO3. For example, at 700 °C, the electrode from U2 powder shows a polarization resistance (Rp) of 0.21 Ω cm2, and series resistance (Rs) of 8.5 Ω cm2 for an YSZ electrolyte of 2-mm thickness, lower than the electrode from U1 powder (0.25 Ω cm2 for Rp and 10 Ω cm2 for Rs) does. The quantitative study on image of the sintered scaffold indicates that U2 powder is better at producing architecture of high porosity or long triple phase boundary (TPB), which is attributed as the reason for the higher performance of the LSF-impregnated electrode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 16, December 2018, Pages 5463-5470
نویسندگان
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