Enhancement of the protonic conductivity of alpha-zirconium phosphate by composite formation with alumina or silica

被引：26

作者：

Glipa, X ^{[1
]}

Leloup, JM ^{[1
]}

Jones, DJ ^{[1
]}

Roziere, J ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,ESA CNRS 5072,LAB AGREGATS MOL & MAT INORGAN,F-34095 MONTPELLIER 5,FRANCE

来源：

SOLID STATE IONICS | 1997年 / 97卷 / 1-4期

关键词：

zirconium phosphate; alumina; silica; conductivity enhancement;

D O I：

10.1016/S0167-2738(97)00064-7

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：

The protonic conductivity of zirconium phosphate, Zr(HPO4)(2) . H2O(alpha-ZrP), can be increased by dispersion with up to ca. 30 mole% inorganic oxide. This positive composite effect is observed both when alpha-ZrP is coprecipitated from a delaminated form with colloidal silica and when it is intimately dispersed with alpha-Al2O3 by ball-milling. The absolute value of the conductivity depends on the pre-treatment undergone by ZrP but, in all cases, it is enhanced by 5-10 times after composite formation with a maximum observed at ca. 20 mole % inorganic oxide. These effects are explained in terms of local modification of the hydrogen phosphate surface.

引用

页码：227 / 232

页数：6

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