Assessment of stability and protonic conduction in NASICON ceramics

被引：3

作者：

Fuentes, RO

Smirnova, OA

Kharton, VV

Figueiredo, FM ^{[1
]}

Marques, FM

机构：

[1] Univ Aveiro, CICECO, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal

[2] CINSO, CITEFA, CONICET, Buenos Aires, DF, Argentina

[3] Univ Aberta, Sci & Tecnol Dept, P-1269001 Lisbon, Portugal

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2004年 / 24卷 / 10-11期

关键词：

conductivity; impedance spectroscopy; microstructure-final; NASICON; powders-solid state reaction; proton conduction;

D O I：

10.1016/j.jeurceramsoc.2003.10.040

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

NASICON-type Na3Si2Zr1.88Y0.12PO11.94 and Na3.2Si2.2Zr1.88Y0.12P0.8O11.94 ceramics were obtained by a standard ceramic route. The structural and microstructural analysis of materials processed tinder different conditions suggested that the amount of Na- and P-rich liquid phases formed during the high temperature sintering is smaller for Na3.2Si2.2Zr1.88Y0.12P0.8O11.94. Indeed, samples of this composition showed a considerably worse sinterability. Total conductivity values obtained as a function of the humidity content show no evidence for protonic conduction in NASICON between 373 and 473 K. Results obtained at lower temperatures are not conclusive due to the significant degradation of the electrolyte/electrode interfaces and surfaces in wet atmospheres. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：3049 / 3055

页数：7

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