Interpretation of an inductive loop in the impedance of the impregnated La0.6Sr0.4Co0.2Fe0.8O3-δ-Y2O3 stabilized ZrO2 cathodes

被引：5
作者：
Chen, Jing [1 ]
Wan, Dongjin [1 ]
Sun, Xuzhuo [1 ]
Li, Bo [1 ]
机构：
[1] Henan Univ Technol, Coll Chem Chem & Environm Engn, Zhengzhou 450001, Henan, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2018年 / 818卷
基金：
中国国家自然科学基金;
关键词：
Inductive loop; Impregnated cathode; Polarization resistance; Solid oxide fuel cell; NANO-STRUCTURED ELECTRODES; COMPOSITE CATHODES; ELECTROCHEMICAL PERFORMANCE; OXIDE; PEROVSKITE; CONDUCTIVITY; REDUCTION;
D O I：
10.1016/j.jelechem.2018.04.032
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrocatalytic performance of the impregnated La0.6Sr0.4Co0.2Fe0.8O3-delta-Y2O3 stabilized ZrO2 (YSZ) cathodes has been investigated by electrochemical impedance spectroscopy (EIS) using a "three-electrode" configuration for intermediate temperature solid oxide fuel cells. The significant inductive loop observed in the fourth quadrant was related to two factors, one is the amount of LSCF loading, the other is the testing temperatures. The inductive loop in the impedance spectra disappeared under dc bias or low oxygen partial pressure. Based on this, the inductive loop in the impedance spectra is closely related to the excess oxygen adsorbed on the surface of electrode can be concluded.
引用
收藏
页码：231 / 235
页数：5
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