Improvement of Li-ion conductivity in A-site disordering lithium-lanthanum-titanate perovskite oxides by adding LiF in synthesis

被引：22
|
作者：
Okumura, Toyoki [1 ]
Yokoo, Koji [1 ]
Fukutsuka, Tomokazu [1 ]
Uchimoto, Yoshiharu [1 ]
Saito, Morihiro [2 ]
Amezawa, Koji [3 ]
机构：
[1] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Kyoto 068501, Japan
[2] Tokyo Univ Sci, Fac Engn, Shinjuku Ku, Tokyo 1620826, Japan
[3] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF POWER SOURCES | 2009年 / 189卷 / 01期
关键词：
Perovskite structure; Li-ion conductor; Solid-state electrolyte; CRYSTAL-STRUCTURE; DIFFRACTION;
D O I：
10.1016/j.jpowsour.2008.10.056
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
La0.56-yLi0.33TiO3-3yF3y (y = 0.017, 0.05) were prepared by a conventional solid-state reaction from a mixture of La2O3, LiCO3, TiO2. and 10% excess LiF. The variation of the lattice parameter with increase of y value in La0.56-yLi0.33TiO3-3yF3y was different from that in conventional lithium-lanthanum-titanate series perovskite oxides, La0.56-yLi0.33+3yTiO3. Bulk Li-ion conductivities of the La0.56-yLi0.33TiO3-3yF3y are higher than those of La0.56-yLi0.33+3yTiO3. Li-ion conductivity of La0.56-yLi0.33TiO3-3yF3y (y=0.017) was 2.30 x 10(-3) S cm(-1) at 30 degrees C, which is, to our knowledge, one of the highest Li-ion conductivities in the oxide compounds. (c) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：536 / 538
页数：3
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