화학공학소재연구정보센터
Journal of Power Sources, Vol.187, No.1, 85-89, 2009
Evaluation of Sr0.88Y0.08TiO3-CeO2 as composite anode for solid oxide fuel cells running on CH4 fuel
Sr0.88Y0.08TiO3 (YST) was synthesized and the performance of a YST-CeO2 composite as an alternative anode for the direct Utilization of CH4 in Solid oxide fuel cells (SOFCs) was investigated. X-ray diffraction showed that YST had good chemical compatibility with CeO2 and YSZ (8 mol% Y-doped ZrO2). The shrinkage of the YST-CeO2 composite oil sintering was less than that of pure YSZ and CeO2, and its thermal-expansion behavior was similar to that of YSZ. With YSZ as electrolyte, ScSZ (10 mol% Sc-doped ZrO2)-LSM (La0.8Sr0.2MnO3) as cathode, and YST-CeO2 composite as anode, single cells were prepared and tested in both H-2 and CH4. The maximum power density obtained at 900 degrees C was 161.7 mW cm(-2) in H-2 atmosphere and 141.3 mW cm(-2) in CH4. The results demonstrated the potential of using YST-CeO2 composite as the anode for SOFCs. Crown Copyright (c) 2008 Published by Elsevier B.V. All right s reserved.