Durability of Anode-supported SOFC Stack Using La(Ni,Fe)O3 Cathode

被引：7
作者：
Yoshida, Y. [1 ]
Komatsu, T. [1 ]
Chiba, R. [1 ]
Yokoo, M. [1 ]
Hayashi, K. [1 ]
Orui, H. [1 ]
Arai, H. [1 ]
机构：
[1] NTT Corp, NTT Energy & Environm Syst Labs, Morinosato Atsugi, Kanagawa 2430198, Japan
来源：
SOLID OXIDE FUEL CELLS 11 (SOFC-XI) | 2009年 / 25卷 / 02期
关键词：
OXIDE FUEL-CELL; LANI(FE)O-3; COATINGS;
D O I：
10.1149/1.3205551
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The durability of a power generation unit composed of an anode-supported SOFC with a La(Ni,Fe)O-3 cathode and uncoated metallic interconnects was measured. A high electrical conversion efficiency of 60% (LHV) was obtained for more than 7000 h. A thermal cycling test was conducted at t = 1500 h and little decay was observed. During the test the cell voltage decreased gradually after t = 5000 h. The cell voltage reduction rate was 0.5% per 1000 h. Resistance changes in the power generation unit were analyzed with impedance spectroscopy. The cathode polarization resistance and ohmic resistance both increased with time. The elements Si and B contained in the water that condensed from the anode exhaust gas were identified using inductively coupled plasma.
引用
收藏
页码：421 / 428
页数：8
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