期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 608, 期 -, 页码 272-277出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.04.154
关键词
Solid oxide fuel cell; Direct carbon; Doped lanthanum gallate; Oxygen ionic conductivity
资金
- National Science Foundation of China (NSFC) [20976063]
Perovskite-type La0.9Sr0.1Ga0.8Mg0.2O3 (delta)(LSGM) is synthesized by conventional solid state reaction. Its phase composition, microstructure, relative density, and oxygen-ionic conductivity are investigated. Tubular electrolyte-supported solid oxide fuel cells (SOFCs) are prepared with the LSGM as electrolyte and gadolinia doped ceria (GDC) mixed with silver as anode. The SOFCs are operated with Fe-loaded activated carbon as fuel and ambient air as oxidant. A typical single cell gives a maximum power density of 383 mWcm(2) at 850 degrees C, which is nearly 1.3 times higher than that of the similar cell with YSZ as electrolyte. A stability test of 72 min is carried out at a constant current density of 210 mA cm(2), with a fuel utilization of 60%, indicating that LaGaO3-based electrolyte is promising to be applied in direct carbon SOFCs (DC-SOFCs). (C) 2014 Elsevier B.V. All rights reserved.
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