Journal
JOURNAL OF POWER SOURCES
Volume 182, Issue 2, Pages 476-481Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2008.04.052
Keywords
SOFC; LSCF; GDC composite electrode; Ag-electrode; infiltration method
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Porous La0.6Sr0.4CO0.2Fe0.8O3 (LSCF) electrodes on anode support cells were infiltrated with AgNO3 solutions in citric acid and ethylene glycol. Two types of solid oxide fuel cells with the LSCF-Ag cathode, Ni-YSZ/YSZ/LSCF-Ag and Ni-Ce0.9Gd0.1O1.95(GDC)/GDC/LSCF-Ag, were examined in a temperature range 530-730 degrees C under air oxidant and moist hydrogen fuel. The infiltration of about 18wt.% Ag fine particles into LSCF resulted in the enhancement of the power density of about 50%. The maximum power density of Ni-YSZ/YSZ/LSCF was enhanced from 0.16Wcm(-2) to 0.25Wcm(-2) at 630 degrees C by infiltration of AgNO3. No significant degradation of out-put power was observed for 150h at 0.7V and 700 degrees C. The Ni-GDC/GDC/LSCF-Ag cell showed the maximum power density of 0.415Wcm(-2) at 530 degrees C. (c) 2008 Elsevier B.V. All rights reserved.
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