Ba1-xPrxCo1-yFeyO3-δ as cathode materials for low temperature solid oxide fuel cells

被引：21

作者：

Hui, Rob ^{[1
]}

Sun, Chunwen ^{[1
]}

Yick, Sing ^{[1
]}

Deces-Petit, Cyrille ^{[1
]}

Zhang, Xinge ^{[1
]}

Maric, Radenka ^{[1
]}

Ghosh, Dave ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Fuel Cell Innovat, Vancouver, BC V6T 1W5, Canada

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 16期

关键词：

Cathode materials; Low temperature solid oxide fuel cells; Electrical conductivities; Interfacial impedance; THERMAL-EXPANSION; PR; PERFORMANCE; LA; GD; SM; ND; LN;

D O I：

10.1016/j.electacta.2010.03.053

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ba1-xPrxCo1-yFeyO3-delta (BPCF) perovskite oxides have been synthesized and investigated as cathode materials for low temperature solid oxide fuel cells (LT-SOFCs). Compared with those of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) and Sm0.5Sr0.5CoO3 (SSCo) cathode materials. BPCF has a lower polarization resistance at decreased temperatures. In particular, Ba0.5Pr0.5Co0.8Fe0.2O3-delta showed the lowest polarization loss among the different compositions as a cathode material for LT-SOFCs. The area specific resistance (ASR) of Ba0.5Pr0.5Co0.8Fe0.2O3-delta as a cathode material is 0.70 and 0.185 Omega cm(2) at 500 degrees C and 550 degrees C, respectively. The maximum power density of the cell BPCF/SDC/Ni-SDC with humidified hydrogen as fuel and air as oxidant reaches 860 mW cm(-2) at 650 degrees C. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.

引用

页码：4772 / 4775

页数：4

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