کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298956 1498406 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of atomization conditions on morphology and SOFC anode performance of spray pyrolyzed NiO–Sm0.2Ce0.8O1.9 composite particles
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effects of atomization conditions on morphology and SOFC anode performance of spray pyrolyzed NiO–Sm0.2Ce0.8O1.9 composite particles
چکیده انگلیسی

NiO–Sm0.2Ce0.8O1.9 (NiO–SDC) composite particles were synthesized by spray pyrolysis (SP). SP resulted in composite particles of NiO enveloped with SDC and these capsule-type composite particles would reduce aggregation of Ni during the reduction from NiO to Ni metals. SOFC anode microstructures and morphologies of NiO–SDC composite precursor particles much affects on SOFC power densities or anode polarization. Therefore, we focused on atomizing conditions of SP process. Relationship between ultrasonic atomization conditions and morphologies of NiO–SDC composites were investigated by controlling temperatures of atomization vessels. The atomizing temperature changed concentration of mists in the vessel, and mean particle size and particle size distribution were increased with an increase in temperature of the atomization vessels. Some extremely large particles were observed by synthesizing at higher atomization temperatures. Large particles contained voids in the particles. The voids in the composite particles would play a role of pore-formers. SOFC measurement showed the synthesis at the atomizing temperature of 30 °C resulted in the high-performance anode. The atomizing process of SP much affected morphology of anode precursor particles, and the atomizing conditions were important to improve anode performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 13–14, May 2006, Pages 1219–1225
نویسندگان
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