Preparation and Ionic Conductivity of Ultrafine Li2+xRExSi1-xO3 by Sol-Gel Method
来源期刊：JOURNAL OF RARE EARTHS2000年第3期
论文作者：CHEN Ru-fen JIA Mi-ying SONG Xiu-qin
Key words：rare earths; Li2+xRExSi1-xO3 (RE=Pr,Nd,Sm,Gd); ionic conductivity; sol-gel method;
Abstract: Li2+xRExSi1-xO3(RE=Pr, Nd, Sm, Gd; x=0～0.15) samples were prepared by the sol-gel method. DTA-TG, XRD, TEM and A-C impedance techniques were used to investigate the structure, shape, and ionic conductivity of these samples. The results show that the range of solid-solution formation is in 0＜x≤0.09, in which the conductivity of these samples raises with the increasing amount of RE2O3 (RE=Pr, Nd, Sm, Gd) added, and the diameter of the powders is about 100 nm. Compared with the conventional solid-state reaction, the sol-gel method needs low temperature and presents high ionic conductivity.
CHEN Ru-fen1，JIA Mi-ying1，SONG Xiu-qin1
(1.Department of Chemistry, Hebei Normal University, Shijiazhuang 050016, China)
Abstract:Li2+xRExSi1-xO3(RE=Pr, Nd, Sm, Gd; x=0～0.15) samples were prepared by the sol-gel method. DTA-TG, XRD, TEM and A-C impedance techniques were used to investigate the structure, shape, and ionic conductivity of these samples. The results show that the range of solid-solution formation is in 0＜x≤0.09, in which the conductivity of these samples raises with the increasing amount of RE2O3 (RE=Pr, Nd, Sm, Gd) added, and the diameter of the powders is about 100 nm. Compared with the conventional solid-state reaction, the sol-gel method needs low temperature and presents high ionic conductivity.
Key words:rare earths; Li2+xRExSi1-xO3 (RE=Pr,Nd,Sm,Gd); ionic conductivity; sol-gel method;
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