Reversible operation of microtubular solid oxide cells using La0.6Sr0.4Co0.2Fe0.8O3-δ-Ce0.9Gd0.1O2-δ oxygen electrodes

被引：57
作者：
Lopez-Robledo, M. J. [1 ,2 ]
Laguna-Bercero, M. A. [1 ]
Larrea, A. [1 ]
Orera, V. M. [1 ]
机构：
[1] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, C Pedro Cerbuna 12, E-50009 Zaragoza, Spain
[2] Gen Mil Acad, Ctr Univ Def, Zaragoza, Spain
来源：
JOURNAL OF POWER SOURCES | 2018年 / 378卷
关键词：
Electrochemical properties; Extrusion; Microtubular; SOFC; SOEC; HIGH-TEMPERATURE ELECTROLYSIS; DOPED CERIA INTERLAYER; FUEL-CELLS; STEAM ELECTROLYSIS; COMPOSITE CATHODES; HYDROGEN ELECTRODE; HIGH-PERFORMANCE; DESIGN ISSUES; DEGRADATION; STABILITY;
D O I：
10.1016/j.jpowsour.2017.12.035
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：
Yttria stabilized zirconia (YSZ) based microtubular solid oxide fuel cells (mT-SOFCs) using La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) and Ce0.9Gd0.1O2-delta (GDC) as the oxygen electrode, along with a porous GDC electrolyte-electrode barrier layer, were fabricated and characterized in both fuel cell (SOFC) and electrolysis (SOEC) operation modes. The cells were anode-supported, the NiO-YSZ microtubular supports being made by Powder Extrusion Moulding (PEM). The cells showed power densities of 695 mW cm(-2) at 800 degrees C and 0.7 V in SOFC mode, and of 845 mA cm(-2) at 800 degrees C and 1.3 V in SOEC mode. AC impedance experiments performed under different potential loads demonstrated the reversibility of the cells. These results showed that these cells, prepared with a method suitable for using on an industrial scale, are highly reproducible and reliable, as well as very competitive as reversible SOFC-SOEC devices operating at intermediate temperatures.
引用
收藏
页码：184 / 189
页数：6
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