کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1289403 973297 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rapid synthesis of La0.9Sr0.1Ga0.8Mg0.2O3−δ electrolyte by a CO2 laser and its electric properties for intermediate temperature solid state oxide full cells
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Rapid synthesis of La0.9Sr0.1Ga0.8Mg0.2O3−δ electrolyte by a CO2 laser and its electric properties for intermediate temperature solid state oxide full cells
چکیده انگلیسی

A laser rapid solidification (LRS) method has been developed for the synthesis of La0.9Sr0.1Ga0.8Mg0.2O3−δ (LSGM), an excellent electrolyte for solid oxide fuel cells. It is shown that pure perovskite LSGM phase can be produced within a few seconds with this method under optimized synthetic conditions and it solidified in densely packed and relatively ordered ridge-like blocks with a relative density of 98.5%. The unique microstructures are attributed to the oriented crystalline growth in the molten pool dictated by heat transfer directions. It is found that the samples synthesized by LRS exhibit superior electrical properties for fuel cell applications to those by solid state reactions. The conductivities of 0.027, 0.079 and 0.134 S cm−1 measured at 600, 700 and 800 °C, respectively are much higher than those of the samples synthesized by solid state reactions with similar purity and density.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 195, Issue 19, 1 October 2010, Pages 6758–6763
نویسندگان
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