Electrochemical and chemical stability performance improvement of Ba0.5Sr0.5Fe0.91Al0.09O3-δ cathode for IT-SOFC through the introduction of a GDC interlayer

被引：16

作者：

Dai, Yinglei ^{[1
]}

Lou, Zhongliang ^{[1
]}

Wang, Zhenhua ^{[1
,2
]}

Qiao, Jinshuo ^{[1
]}

Sun, Wang ^{[1
]}

Sun, Kening ^{[1
,2
]}

机构：

[1] Beijing Inst Technol, Sch Chem Engn & Environm, Beijing Key Lab Chem Power Source & Green Catalys, Beijing 100081, Peoples R China

[2] Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Solid oxide fuel cells (SOFCs); Cathode; Interlayer; Composite cathode; OXIDE FUEL-CELLS; ELECTRODE-KINETICS; PEROVSKITES; ANODE;

D O I：

10.1016/j.ijhydene.2015.02.131

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：

In order to enhance the electrochemical performance of solid oxide fuel cells (SOFCs), a Gd0.2Ce0.8O2-delta (GDC) interlayer was introduced to Ba0.5Sr0.5Fe0.91Al0.09O3-delta (BSFA) cathode. The chemical stability and microstructure of the samples were characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance was tested by impedance spectroscopy. The results show that BSFA cathode is chemically and mechanically stable with the existence of a GDC interlayer. The polarization resistance of BSFA cathode with a GDC interlayer was 0.3009 Omega cm(2) and the maximum power density (P-max) of an anode supported single cell reached 1321 mW cm(-2) at 750 degrees C. Furthermore, a BSFA-GDC composite cathode was prepared and presented excellent performance with the P-max of 1957 mW cm(-2) at 750 degrees C, providing a feasible choice for IT-SOFC cathodes. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：5939 / 5946

页数：8

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