Synthesis and characterization of scandia ceria stabilized zirconia powders prepared by polymeric precursor method for integration into anode-supported solid oxide fuel cells

被引：22
作者：
Tu, Hengyong [1 ]
Liu, Xin [1 ]
Yu, Qingchun [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Inst Fuel Cell, Sch Mech Engn, Shanghai 200240, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 06期
关键词：
Intermediate temperature solid oxide fuel cells; Anode-supported; Electrolyte; Scandia-stabilized zirconia; Polymeric precursor method; ELECTRICAL-CONDUCTIVITY; ELECTROLYTE; PERFORMANCE;
D O I：
10.1016/j.jpowsour.2010.11.108
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：
Scandia ceria stabilized zirconia (10Sc1CeSZ) powders are synthesized by polymeric precursor method for use as the electrolyte of anode-supported solid oxide fuel cell (SOFC). The synthesized powders are characterized in terms of crystalline structure, particle shape and size distribution by X-ray diffraction (XRD), transmission electron microscopy (TEM) and photon correlation spectroscopy (PCS). 10Sc1CeSZ electrolyte films are deposited on green anode substrate by screen-printing method. Effects of 10Sc1CeSZ powder characteristics on sintered films are investigated regarding the integration process for application as the electrolytes in anode-supported SOFCs. It is found that the 10Sc1CeSZ films made from nanosized powders with average size of 655 nm are very porous with many open pores. In comparison, the 10Sc1CeSZ films made from micron-sized powders with average size of 2.5 mu m, which are obtained by calcination of nano-sized powders at higher temperatures, are much denser with a few closed pinholes. The cell performances are 911 mW cm(-2) at the current density of 1.25 A cm(-2) and 800 degrees C by application of Ce0.8Gd0.2O2 (CGO) barrier layer and La0.6Sr0.4CoO3 (LSC) cathode. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：3109 / 3113
页数：5
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