Structural optimization of (La, Sr)CoO3-based multilayered composite cathode for solid-oxide fuel cells

Title
Structural optimization of (La, Sr)CoO3-based multilayered composite cathode for solid-oxide fuel cells
Authors
박선영지호일김혜령윤경중손지원김병국제해준이해원이종호
Keywords
Solid-oxide fuel cell (SOFC); Lanthanum strontium cobaltite; Cathode functional layer; Cathode-current-collecting layer; Oxygen reduction reaction
Issue Date
2013-04
Publisher
Journal of power sources
Citation
VOL 228, 97-103
Abstract
In the present study, (La, Sr)CoO3 material was screen-printed as a cathode and as current-collecting layers for planar-type low-temperature solid-oxide fuel cells (SOFCs). The compositional effects of the cathode functional and current-collecting layer on unit-cell performance were investigated using AC and DC polarization experiments. Two different cathode (La, Sr)CoO3 materials, La0.6Sr0.4CoO3 and La0.8Sr0.2CoO3, were examined, and La0.6Sr0.4CoO3 was found to be more effective for increasing the electrocatalytic activation and collection efficiency of the current produced in the cathode reaction. Furthermore, a well-designed architecture for the current-collecting layer was very effective in increasing unit-cell performance by reducing the contact resistance between SOFC cathodes and interconnects.
URI
http://pubs.kist.re.kr/handle/201004/44359
ISSN
03787753
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KIST Publication > Article
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