کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1294951 973644 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reverse micelle synthesis of perovskite oxide nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Reverse micelle synthesis of perovskite oxide nanoparticles
چکیده انگلیسی

La0.6Sr0.4CoxFe1−xO3−δ (LSCF), La0.6Sr0.4Cu0.2Fe0.8O3−δ, Ba0.5Sr0.4Co0.8Fe0.2O3−δ and LaFeO3−δ nanoparticles were synthesized by a reverse micelle procedure. Controlling the size of the micelles through the water:oil phase ratio enabled synthesis of phase pure perovskite particles with average sizes from 14 nm to 50 nm. Small amounts of an impurity phase, likely cobalt oxide, were detected in the XRD spectrum of high cobalt content samples of LSCF (x = 0.8). La0.6Sr0.4Co0.2Fe0.8O3−δ nanoparticles were utilized to coat the surface of a dense thin-film La0.6Sr0.4Co0.2Fe0.8O3−δ solid oxide fuel cell cathode. The polarization resistance of the nanoparticle coated electrode, measured at open circuit in air at 973 K, was 20% lower than an equivalent un-coated electrode.


► Nanoscale perovskite powders were synthesized via a reverse micelle technique.
► Particle size was controlled by controlling the micelle size.
► Nanoparticle coated SOFC cathodes show reduced polarization resistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 196, Issue 1, 11 August 2011, Pages 65–72
نویسندگان
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