Electrochemical Properties of La0.5Sr0.5Co0.8M0.2O3- (M=Mn, Fe, Ni, Cu) Perovskite Cathodes for IT-SOFCs

被引：28
|
作者：
Fu, Yen-Pei [1 ,2 ]
Subardi, Adi [1 ,3 ]
Hsieh, Min-Yen [1 ]
Chang, Wen-Ku [1 ]
机构：
[1] Natl Dong Hwa Univ, Dept Mat Sci & Engn, Hualien 97401, Taiwan
[2] Natl Dong Hwa Univ, Nanotechnol Res Ctr, Hualien 97401, Taiwan
[3] STTNAS, Dept Mech Engn, Yogyakarta 55281, Indonesia
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2016年 / 99卷 / 04期
关键词：
OXIDE FUEL-CELLS; CHEMICAL DIFFUSION-COEFFICIENT; ELECTRICAL-CONDUCTIVITY RELAXATION; DOPED LANTHANUM CHROMITES; OXYGEN REDUCTION; SURFACE EXCHANGE; HIGH-PERFORMANCE; BULK DIFFUSION; COMPOSITE CATHODES; ION-TRANSPORT;
D O I：
10.1111/jace.14127
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：
The electrochemical properties of La0.5Sr0.5Co0.8M0.2O3- (M=Mn, Fe, Ni, Cu) cathodes are investigated with chemical bulk diffusion coefficients (D-chem) and polarization resistances. The electrochemical performance of long-term testing for La0.5Sr0.5Co0.8Cu0.2O3- cathode was carried out to investigate its electrochemical stability. In this work, an anode-supported single cell with a thick-film SDC electrolyte (30 m), a Ni-SDC cermet anode (1 mm), and a La0.5Sr0.5Co0.8Cu0.2O3- cathode (10 m) reaches a maximum peak power density of 983 mW/cm(2) at 700 degrees C. Obviously, Cu substitution for B-site of La0.5Sr0.5CoO3- cathode reduced thermal expansion coefficient (TEC) value and enhanced oxygen bulk diffusion and electrochemical properties. La0.5Sr0.5Co0.8Cu0.2O3- is a promising cathode material for intermediate temperature solid oxide fuel cells (IT-SOFC).
引用
收藏
页码：1345 / 1352
页数：8
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