Mixed conductivity and electrode properties of Mn-doped Bi-Sr-Fe-based perovskite-type oxides

被引：16

作者：

Baek, Doohyun ^{[1
]}

Kamegawa, Atsunori ^{[1
]}

Takamura, Hitoshi ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

来源：

SOLID STATE IONICS | 2013年 / 253卷

基金：

日本学术振兴会;

关键词：

Bi-Sr-Fe-based perovskite-type oxide; Mixed ionic and electronic conductor; SOFC cathode; Oxygen permeable membrane; Mn-doping effect; CHEMICAL EXPANSION; PERFORMANCE; REDUCTION;

D O I：

10.1016/j.ssi.2013.09.056

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 Fe-site of Bi0.7Sr0.3FeO3-delta (BSF) was doped with manganese to determine any changes in the charged defects and understand how this change affects the electrode properties of this material. The electrical conductivity and oxygen permeability results suggest that Mn-doping effectively improves the electronic compensation of BSF, which is energetically favored by ionic compensation. In terms of electrode properties, 50 mol% Mn-doped BSF (BSFM55) showed more than one order of magnitude greater electrode resistance than BSF, suggesting that kinetics related to ionic defects plays a more important role than electronic defects in determining the properties of Bi-Sr-Fe based perovskite oxides. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：211 / 216

页数：6

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