Doped-Ceria Diffusion Barriers Prepared by Infiltration for Solid Oxide Fuel Cells

被引：33

作者：

Kungas, R. ^{[1
]}

Bidrawn, F. ^{[1
]}

Vohs, J. M. ^{[1
]}

Gorte, R. J. ^{[1
]}

机构：

[1] Univ Penn, Dept Chem & Biomol Engn, Philadelphia, PA 19104 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2010年 / 13卷 / 08期

关键词：

calcination; cathodes; cerium compounds; cobalt compounds; diffusion barriers; lanthanum compounds; melt infiltration; samarium; solid oxide fuel cells; strontium compounds; yttrium compounds; zirconium compounds; ANODE-SUPPORTED SOFCS; COMPOSITE CATHODES; TEMPERATURE SOFCS; HIGH-PERFORMANCE; YSZ COMPOSITES; IMPREGNATION METHODS; ELECTRODES; FABRICATION; HYDROCARBONS; (LA; SR)MNO3;

D O I：

10.1149/1.3432253

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

To stabilize solid oxide fuel cell cathodes prepared by infiltration of La(0.8)Sr(0.2)CoO(3) (LSCo) into porous yttria-stabilized zirconia (YSZ), a coating of Sm-doped ceria (SDC) was first deposited onto the YSZ scaffold. The dense SDC coating was prepared by infiltration with aqueous solutions of Sm(NO(3))(3) and Ce(NO(3))(3), followed by calcination to 1473 K. The SDC coating prevented solid-state reactions between LSCo and YSZ at 1373 K. LSCo-SDC/YSZ electrodes exhibited low cathode impedances, similar to 20 m Omega cm(2), at 973 K, with acceptable degradation after heating to 1373 K. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3432253] All rights reserved.

引用

页码：B87 / B90

页数：4

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