Preparation and investigation of electrical and electrochemical properties of lanthanum-based cathode for solid oxide fuel cell

被引：13
|
作者：
Pakzad, Amin [1 ]
Salamati, Hadi [1 ]
Kameli, Parviz [1 ]
Talaei, Zahra [1 ]
机构：
[1] Isfahan Univ Technol, Dept Phys, Esfahan 8415683111, Iran
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 17期
关键词：
LSCF; Resistance; Activation energy; Diffusion coefficient; TRANSPORT;
D O I：
10.1016/j.ijhydene.2010.04.163
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：
In this paper, electrical and electrochemical properties of La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) cathode have been studied. The sample is prepared by solid-state reaction method. The results of the X-ray diffraction have been analyzed by FullProf software and it has been found that LSCF phase has been formed. Resistance of the sample versus temperature in air atmosphere has been measured and the results show that, it decreases by increasing temperature. Activation energy for electrical conductivity has been calculated by fitting the Arrhenius plot with experimental data. Also, resistance of sample has been measured at the different temperature ranges and in the presence of Oxygen/Argon atmosphere. Using electrical relaxation technique and some approximations, ionic diffusion coefficient and activation energy for ionic conductivity have been calculated. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：9398 / 9400
页数：3
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