SOFC composite electrolyte based on LSGM-8282 and zirconia or doped zirconia from zircon concentrate
来源期刊：International Journal of Minerals Metallurgy and Materials2012年第9期
论文作者：Fitria Rahmawati Bambang Prijamboedi Syoni Soepriyanto Ismunandar
文章页码：863 - 871
摘 要：The aim of this research is to study zirconia-based electrolyte materials to increase the commercial value of zircon concentrate as a side product of tin mining industries. Synthesis of CaO-Y2O3-ZrO2 （CYZ） and 8mol% Y2O3-ZrO2（8YSZ） was carried out by solid state reaction. The result shows that ZrO2 presents in tetragonal phase. Doping of Y2O3 into ZrO2 allows a phase transformation from tetragonal into cubic structure with small percentage of monoclinic phase. Meanwhile, doping of CaO-Y2O3 allows a phase transformation into a single cubic phase. These phase transformations enhance the ionic conductivity of the material. Introduction of 10wt% of LSGM-8282 into CYZ （CYZ-L90:10） allows further improvement of inter-grain contact shown by SEM morphological analysis and leads to the enhancement of ionic conductivity.
Fitria Rahmawati1,2，Bambang Prijamboedi1，Syoni Soepriyanto3，Ismunandar1
1. Inorganic and Physical Chemistry Research Group, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10 Bandung 40132, Indonesia2. Research Group of Solid State & Catalysis, Chemistry Department, Sebelas Maret University, Jl. Ir. Sutami 36 A Kentingan Surakarta 57126, Indonesia3. Metallurgical Engineering Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesha 10 Bandung 40132, Indonesia
摘 要：The aim of this research is to study zirconia-based electrolyte materials to increase the commercial value of zircon concentrate as a side product of tin mining industries. Synthesis of CaO-Y2O3-ZrO2 （CYZ） and 8mol% Y2O3-ZrO2（8YSZ） was carried out by solid state reaction. The result shows that ZrO2 presents in tetragonal phase. Doping of Y2O3 into ZrO2 allows a phase transformation from tetragonal into cubic structure with small percentage of monoclinic phase. Meanwhile, doping of CaO-Y2O3 allows a phase transformation into a single cubic phase. These phase transformations enhance the ionic conductivity of the material. Introduction of 10wt% of LSGM-8282 into CYZ （CYZ-L90:10） allows further improvement of inter-grain contact shown by SEM morphological analysis and leads to the enhancement of ionic conductivity.
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