Effect of the lattice volume on the Al3+ ion conduction in NASICON type solid electrolyte

被引：13
作者：
Hasegawa, Y
Imanaka, N
机构：
[1] Osaka Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan
[2] Osaka Univ, Handai Frontier Res Ctr, Suita, Osaka 5650871, Japan
来源：
SOLID STATE IONICS | 2005年 / 176卷 / 31-34期
关键词：
trivalent ion; NASICON type structure; aluminum; lanthanum; titanium;
D O I：
10.1016/j.ssi.2005.02.028
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：
New trivalent Al3+ ion conductors with NASICON type structure, [Al-0.2(Zr1-xTix)(0.8)](20/19)Nb(PO4)(3) and (Al1-xLax)(4/19(1-x)) Zr(16-19x)/19(1-x)Nb(PO4)(3), were developed and their ion conducting properties were investigated. The lattice size of the NASICON type (AlxZr1-x)(4/(4-x))Nb(PO4)(3) series was successfully controlled by intentionally doping Ti4+ ion or La3+ ion in the crystal lattice, and the most suitable lattice size for the Al3+ ion conduction was identified from the relationship between the Al3+ ion conductivity and the lattice volume. The highest ion conductivity of 6.1 X 10(-4) S(.)cm(-1) at 600 degrees C was obtained for [Al-0.2(Zr0.8Ti0.2)0.8](20/19)Nb(PO4)(3) among the NASICON type phosphate series prepared. Since the Al3+ ion conduction was dependent upon the crystal lattice size, it was demonstrated that the crystal lattice volume can be one of the key factors to optimize the ion conduction in the NASICON type structure. (c) 2005 Elsevier B.V. All rights reserved.
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页码：2499 / 2503
页数：5
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