A novel layered perovskite electrode for symmetrical solid oxide fuel cells: PrBa(Fe0.8Sc0.2)2O5+δ

被引：57
作者：
He, Wei [2 ]
Wu, Xuelian [3 ]
Dong, Feifei [1 ,2 ]
Ni, Meng [2 ]
机构：
[1] Guangdong Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
[2] Hong Kong Polytech Univ, Dept Bldg & Real Estate, Bldg Energy Res Grp, Kowloon 999077, Hong Kong, Peoples R China
[3] City Univ Hong Kong, Dept Phys & Mat Sci, Tat Chee Ave, Kowloon 999077, Hong Kong, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2017年 / 363卷
关键词：
Symmetrical solid oxide fuel cell; Electrode; Layered perovskite; Catalytic activity; HIGH-PERFORMANCE; ANODE; SOFCS; CATHODES; CO;
D O I：
10.1016/j.jpowsour.2017.07.059
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：
A layered perovskite PrBa(Fe0.8Sc0.2)(2)O5+delta (PBFSc) is applied as both cathode and anode in the symmetrical solid oxide fuel cells (SOFCs) field and its electrochemical properties are investigated. La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) supported symmetrical cell with PBFSc electrode exhibits polarization resistances of 0.05 Omega cm(2) in air and 0.18 Omega cm(2) in wet H-2 at 800 degrees C. A maximum power density of 921 mW cm(-2) is obtained using wet H-2 as the fuel and ambient air as the oxidant at 850 degrees C. Moreover, the electrode demonstrates good redox stability in both oxidizing and reducing atmospheres. The layered perovsldte PBFSc with favorable performance characteristics is shown to be an effective, redox-stable electrode candidate that can be used for both cathode and anode. (C) 2017 Elsevier B.V. All rights reserved.
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页码：16 / 19
页数：4
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