Fast oxygen diffusion in A-site ordered perovskites

被引：173

作者：

Taskin, A. A.

Lavrov, A. N.

Ando, Yoichi

机构：

[1] Cent Res Inst Elect Power Ind, Mat Sci Res Lab, Komae, Tokyo 2018511, Japan

[2] Russian Acad Sci, Inst Inorgan Chem, Novosibirsk 630090, Russia

来源：

PROGRESS IN SOLID STATE CHEMISTRY | 2007年 / 35卷 / 2-4期

关键词：

perovskites; cation ordering; oxygen diffusion; fuel cell materials;

D O I：

10.1016/j.progsolidstchem.2007.01.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Materials demonstrating high ion diffusivity are currently attracting a great deal of attention owing to their huge technological potential. We have found that the oxygen diffusivity in doped perovskites, which are among the best oxygen conductors, can be further enhanced by orders of magnitude by inducing crystallographic ordering among lanthanide and alkali-earth ions in the A-site sublattice. Transformation of a simple cubic perovskite, with randomly occupied A-sites, into a layered crystal with alternating lanthanide and alkali-earth planes reduces the oxygen bonding strength and provides disorder-free channels for ion motion, pointing to an efficient way to design new ionic conductors. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：481 / 490

页数：10

共 25 条

[1] PHASE-TRANSITIONS AND IONIC-CONDUCTIVITY IN BI4V2O11 AN OXIDE WITH A LAYERED STRUCTURE [J].