Preparation and electrochemical properties of La1.0Sr1.0FeO4+δ as cathode material for intermediate temperature solid oxide fuel cells

被引：11
作者：
Huang, Jianhua [1 ]
Jiang, Xiaoying [1 ]
Li, Xiaobo [1 ]
Liu, Aiqin [1 ]
机构：
[1] Henan Inst Sci & Technol, Coll Chem & Chem Engn, Xinxiang 453003, Peoples R China
来源：
JOURNAL OF ELECTROCERAMICS | 2009年 / 23卷 / 01期
关键词：
Solid oxide fuel cells; Cathode material; K2NiF4-type structure; Electrochemical properties;
D O I：
10.1007/s10832-008-9536-9
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Cathodic material La1.0Sr1.0FeO4+delta for an intermediate temperature solid oxide fuel cell (IT-SOFC) was prepared via the glycine-nitrate process and characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). XRD results showed that no reaction occurred between the La1.0Sr1.0FeO4+delta electrode and Sm0.2Ce0.8O1.9 (SDC) electrolyte at 1000 A degrees C. SEM results showed that the electrode formed good contact with the SDC electrolyte after sintering at 1000 A degrees C for 2 h. The electrochemical properties of La1.0Sr1.0FeO4+delta were measured using electrochemical impedance spectroscopy (EIS) and steady state polarization measurement. At 700 A degrees C, the polarization resistance was about 3.90 Omega cm(2), and the lowest polarization overpotential was 57 mV at a current density of 55 mA cm(-2).
引用
收藏
页码：67 / 71
页数：5
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