LaGaO3-based cermet for solid oxide fuel cell cathodes

被引：3

作者：

Datta, Pradyot ^{[1
,3
]}

Majewski, Peter ^{[2
]}

Aldinger, Fritz ^{[3
]}

机构：

[1] Tech Univ Clausthal, Inst Met, D-38678 Clausthal Zellerfeld, Germany

[2] Univ S Australia, Sch Adv Mfg & Mech Engn, Mawson Lakes, SA 5095, Australia

[3] Max Planck Inst Met Res, Pulvermet Lab, D-70569 Stuttgart, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2009年 / 29卷 / 08期

关键词：

Oxide materials; Composite cathode; Thermal expansion; Photoelectron spectroscopies; X-ray diffraction; MG-DOPED LAGAO3; OXYGEN PERMEATION; BISMUTH OXIDE; ELECTROLYTE; SR; PERFORMANCE; COMPOSITES; STRONTIUM; OXIDATION; SILVER;

D O I：

10.1016/j.jeurceramsoc.2008.08.030

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：

A series of La0.9Sr0.1Ga0.85Mg0.15O3-delta-Ag cermets with different Ag2O contents were prepared by conventional sintering, assessing their suitability as cathode material for solid oxide fuel cell (SOFC) in combination with Sr- and Mg-doped LaGaO3 electrolytes. Ag2O is found to get dissociated at around 320 degrees C. The chemical compatibility between La0.9Sr0.1Ga0.85Mg0.15O3-delta-Ag (LSGM) and Ag was investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. No reaction or solid solubility between LSGM and Ag was found. Thermal expansion coefficients of the cermets were measured as a function of Ag content and were found to increase with increasing metallic content. Oxygen adsorption at the surface of the cermets could be detected. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1469 / 1476

页数：8

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