期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 157, 期 4, 页码 B536-B541出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3284519
关键词
additives; cathodes; cerium compounds; crystal microstructure; crystal morphology; nanocomposites; particle size; samarium compounds; solid oxide fuel cells; strontium compounds
资金
- Department of Energy [DE-FG02-05ER46255]
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois
- Northwestern University
Nanocomposite Sm0.5Sr0.5CoO3-x (SSC)-Ce0.9Gd0.1O1.95 (GDC) solid oxide fuel cell (SOFC) cathodes were produced by infiltrating SSC nitrate solutions into GDC scaffolds. A single infiltration of a concentrated solution resulted in a low polarization resistance of 0.1 cm(2) at 600 degrees C. Infiltrate solution additives slightly improved the SSC phase purity but did not significantly alter the SSC particle morphology/size or the infiltrated cathode polarization resistance. Polarization resistance predictions made using microstructural observations and a simple model were found to be within 35% of the experimentally measured values without the use of fitting parameters.
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