Sol-gel processing of Sr0.5Sm0.5CoO3 film

Strontium-doped samarium cobaltite (Sm0.5Sr0.5CoO3, SSC) has attracted increasing attention as cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFCs) due to its mixed-conduction characteristics and relatively high ionic conductivity. In this paper, sol-gel-derived SSC films...

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Veröffentlicht in:	Journal of power sources 2006-06, Vol.157 (1), p.385-388
Hauptverfasser:	ZHAOLIN TANG, YONGSONG XIE, HAWTHORNE, Howard, GHOSH, Dave
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells
Online-Zugang:	Volltext
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Zusammenfassung:	Strontium-doped samarium cobaltite (Sm0.5Sr0.5CoO3, SSC) has attracted increasing attention as cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFCs) due to its mixed-conduction characteristics and relatively high ionic conductivity. In this paper, sol-gel-derived SSC films were deposited on yttria stabilized zirconia (YSZ) substrates from an alkoxide solution of strontium isopropoxide, samarium isopropoxide and cobalt isopropoxide. The alkoxide solution was chelated with 2-ethylacetoacetate (CH3COCH2COOC2H5), and the effect of polyethylene glycol (PEG) addition on the crystallization behavior and microstructure evolution of SSC films was investigated. XRD, TGA and SEM measurements indicated that single-perovskite phase SSC films were formed when the films were heated at 700 deg C, and PEG could significantly refine the crystalline size of the SSC film from around 100-50nm.
ISSN:	0378-7753 1873-2755
DOI:	10.1016/j.jpowsour.2005.07.041