کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1527494 995389 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Y2Zr2O7 (YZ)-pyrochlore based oxide as an electrolyte material for intermediate temperature solid oxide fuel cells (ITSOFCs)—Influence of Mn addition on YZ
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Y2Zr2O7 (YZ)-pyrochlore based oxide as an electrolyte material for intermediate temperature solid oxide fuel cells (ITSOFCs)—Influence of Mn addition on YZ
چکیده انگلیسی

Compositions in the pyrochlore system Y2Zr2O7 (YZ) and Y2Zr2−xMnxO7−δ (YZM) (where x = 0.025, 0.05, 0.075 and 0.10) were examined as possible alternatives to stabilised zirconia solid oxide electrolyte in intermediate temperature solid oxide fuel cells (ITSOFC). Such materials were prepared by glycine–nitrate combustion process. The prepared compounds were characterised by X-Ray Diffraction and Thermal analysis. Circular pellets were fabricated and annealed at different temperatures ranging from 1000 to 1400 °C. The sintering behaviour of YZ and YZM were investigated to obtain information on the densification factor, relative percentage shrinkage/expansion in volume after heat treatment and apparent porosity value. The small doping level of Mn (≤10.0 wt%) resulted in increased conductivity values. The component diffusion coefficients and mobility of ions are calculated from its conductivity value. Dcomp and μi are found in the range of 10−8 cm2 s−1 and 10−7 cm2 V−1 s−1, respectively. The key features, which make the YZ and YZM systems attractive as a fuel cell electrolyte, are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 108, Issue 1, 15 March 2008, Pages 102–108
نویسندگان
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