کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1491312 1510727 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, phase stability and electrical conductivity of Sr2MgMoO6−δ anode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis, phase stability and electrical conductivity of Sr2MgMoO6−δ anode
چکیده انگلیسی

A freeze-drying precursor method has been used to prepare polycrystalline materials of the new SOFC anode, Sr2MgMoO6−δ. The optimal synthesis conditions were studied in order to avoid secondary phase segregations. These materials were characterised by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermal analysis (TG/DTA) and scanning electron microscopy (SEM). The as-synthesised polycrystalline powders showed homogeneous particle size distribution in the submicrometric range. The stability studies demonstrated that this phase is stable up to 1200 °C under 5% H2-Ar. In addition, impedance spectroscopy was used to determine the conductivity of ceramic pellets prepared under oxidising and reducing atmosphere. Samples sintered in reducing atmosphere exhibit higher conductivity values than those prepared in air.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 43, Issues 8–9, 4 August–4 September 2008, Pages 2441–2450
نویسندگان
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