High oxide ion conductivity in Fe and Mg doped LaGaO3 as the electrolyte of solid oxide fuel cells

被引：22

作者：

Enoki, Makiko ^{[1
]}

Yan, Jingwang ^{[1
]}

Matsumoto, Hiroshige ^{[1
]}

Ishihara, Tatsumi ^{[1
]}

机构：

[1] Kyushu Univ, Fac Engn, Dept Appl Chem, Fukuoka 8190395, Japan

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 19-25期

关键词：

oxide ion conductor; LaGaO3; Fe dope; IT SOFC;

D O I：

10.1016/j.ssi.2006.01.015

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：

La(Sr)Ga(Fe,Mg)O-3 exhibited the high oxide ion conductivity and the electrical power generating property of SOFC single cell using La0.7Sr0.3Ga0.7Fe0.2Mg0.1O3-delta (LSGFM) electrolyte was investigated in this study. The transport number of oxide ion is almost 0.8 in LSGFM and so open circuit potential (OCV) is as low as 0.8 V OCV was strongly affected by anode materials and the highest OCV was achieved on Ni-Fe bimetallic anode. The extremely high power density was achieved by using LSGFM for electrolyte of SOFC. The maximum power densities of the cells can be elevated by coating with oxide ion conductor film at anode side. The maximum power density increased in the following order for coating film: LSGM > SDC > YSZ. The maximum power density of 197 and 100 mW/cm(2) can be achieved at 873 and 773 K, respectively, when LSGM film deposited on the anode side of LSGFM. Therefore, LSGFM can be used as electrolyte of SOFC operating at intermediate temperature. (c) 2006 Elsevier B.V All rights reserved.

引用

页码：2053 / 2057

页数：5

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