In situ sinterable cathode with nanocrystalline La0.6Sr0.4Co0.2Fe0.8O3-delta for solid oxide fuel cells

Title
In situ sinterable cathode with nanocrystalline La0.6Sr0.4Co0.2Fe0.8O3-delta for solid oxide fuel cells
Author(s)
김혜경김주희[김주희]박영민[박영민]
Keywords
FERRITE-BASED PEROVSKITES; TEMPERATURE
Issue Date
201105
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.36, no.9, pp.5617 - 5623
Abstract
A nanocrystalline powder with a lanthanum based iron- and cobalt-containing perovskite, La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF), is investigated for solid oxide fuel cell (SOFC) applications at a relatively low operating temperature (600-800 degrees C). A LSCF powder with a high surface area of 88 m(2) g(-1), which is synthesized via a complex method with using inorganic nano dispersants, is printed onto an anode supported cell as a cathode electrode. A LSCF cathode without a sintering process (in situ sintered cathode) is characterized and compared with that of a sintering process at 780 degrees C (ex situ sintered cathode). The in situ sintered SOFC shows 0.51 A cm(-2) at 0.9 V and 730 degrees C which is comparable with that of the ex situ sintered SOFC. The conventional process for SOFCs, the ex situ sintered SOFC, including a heat treatment process after printing the cathodes, is time consuming and costly. The in situ sinterable nanocrystalline LSCF cathode may be effective for making the process simple and cost effective. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/25212http://dx.doi.org/10.1016/j.ijhydene.2011.02.011
ISSN
0360-3199
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공과대학 > 신소재공학부 > Articles
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