La0.9-xCaxCe0.1CrO3-δ as potential anode materials for solid oxide fuel cells

被引：17

作者：

Dong, Xihui ^{[1
]}

Ma, Shuguo ^{[2
]}

Huang, Kevin ^{[1
]}

Chen, Fanglin ^{[1
]}

机构：

[1] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA

[2] Univ S Carolina, Coll Engn & Comp, Columbia, SC 29208 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 14期

关键词：

Lanthanum chromite; Ceramic anode; SOFC; Perovskite; PEROVSKITE-TYPE OXIDE; ELECTRICAL-CONDUCTIVITY; LANTHANUM CHROMITE; CARBON FORMATION; DOPED LAGAO3; CERIA; SPECTROSCOPY; PERFORMANCE; ELECTRODES; RESISTANCE;

D O I：

10.1016/j.ijhydene.2012.04.112

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：

LaCrO3 doped with calcium and cerium on the A-site in the series of La0.9-xCaxCe0.1CrO3-delta (LCCC3060, LCCC4050, LCCC5040, LCCC6030 corresponding to x = 0.6, 0.5, 0.4, and 0.3 respectively), is synthesized by a sol gel combustion method and evaluated as anode material for solid oxide fuel cells (SOFCs). Relatively higher Ca-doping on La in LaCrO3 is found to improve both electronic and ionic conductivity. LCCC compositions have demonstrated good chemical stability in reducing atmospheres. Evaluation of the LCCC material as anode in symmetrical cell configuration shows that the highest Ca-doping composition results in the lowest activation energy and the lowest polarization resistance. La0.8Sr0.2Ga0.83Mg0.17O3-delta (LSGM) electrolyte-supported single cells with LCCC3060 as the anode and La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) as the cathode show that LCCC3060 can be a potential anode material for H-2, but not for CH4. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：10866 / 10873

页数：8

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