Electrochemical performance of LSCF based thin film cathodes prepared by spray pyrolysis

被引：139

作者：

Beckel, Daniel ^{[1
]}

Muecke, Ulrich P. ^{[1
]}

Gyger, Thomas ^{[1
]}

Florey, Guillaume ^{[1
]}

Infortuna, Anna ^{[1
]}

Gauckler, Ludwig J. ^{[1
]}

机构：

[1] ETH, Dept Mat, CH-8093 Zurich, Switzerland

来源：

SOLID STATE IONICS | 2007年 / 178卷 / 5-6期

关键词：

thin film; LSCF; cathode; spray pyrolysis; perovskite;

D O I：

10.1016/j.ssi.2007.01.019

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：

La0.6Sr0.4Co0.21Fe0.8O3 (LSCF) based thin film cathodes were fabricated by spray pyrolysis and their performance was evaluated with area specific resistance (ASR). With a maximum processing temperature of 650 degrees C, these cathodes are suitable for application in micro-solid oxide fuel cells (mu-SOFC). The similar to 500 nin thick cathodes showed performance similar to traditional thick film LSCF cathodes (10 - 100 mu m). However, by using a new material composition Ba0.25La0.25Sr0.5Co0.8Fe0.2O3-delta (BLSCF) or by modifying the microstructure, a significant improvement in performance was achieved. Reducing the grain size or introducing a thin dense cathode layer between the porous cathode and the electrolyte were beneficial modifications of the microstructure. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：407 / 415

页数：9

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[1] Reference electrode placement and seals in electrochemical oxygen generators [J].