Oxide ion conductivity in Bi(2)W(1-x)ME(x)O(6-x/2) (ME=Nb,Ta)

被引：43

作者：

Baux, N ^{[1
]}

Vannier, RN ^{[1
]}

Mairesse, G ^{[1
]}

Nowogrocki, G ^{[1
]}

机构：

[1] ENSCL, LAB CRISTALLOCHIM & PHYSICOCHIM SOLIDE, URA CNRS 452, F-59652 VILLENEUVE DASCQ, FRANCE

来源：

SOLID STATE IONICS | 1996年 / 91卷 / 3-4期

关键词：

bismuth tungstate oxide; niobium bismuth tungstate oxide; tantalum bismuth tungstate oxide; substituted Bi2WO6; oxide anion conductors;

D O I：

10.1016/S0167-2738(96)00459-6

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：

Oxygen deficient Bi2WO6 phases have been synthesized by substitution for W-VI with Nb-V and Ta-V, in this m = 1 member of the Aurivillius series. The composition range of the solid solutions is limited to 0<x<0.15 according to a formula Bi2W1-x(Nb or Ta)(x)O-6-x/2. The maximum oxygen ion conductivities are obtained when x = 0.05 for both phases with moderate activation energies. The performances are intermediate between those of the high conductor BIMEVOX phases and those of doped higher members of the Aurivillius series m = 2, 3 and 4. These results provide the first experimental evidence of the predominant role of the Bi3+ 6s(2) lone pair in the oxide ion diffusion process within these layered phases.

引用

页码：243 / 248

页数：6

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