BROWSE

Related Researcher

Author's Photo

Kim, Guntae
gunslab
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM

ITEM VIEW & DOWNLOAD

SOFC anodes based on infiltration of La(0.3)Sr(0.7)TiO(3)

Cited 58 times inthomson ciCited 61 times inthomson ci
Title
SOFC anodes based on infiltration of La(0.3)Sr(0.7)TiO(3)
Author
Lee, ShiwooKim, GuntaeVohs, J. M.Gorte, R. J.
Keywords
OXIDE FUEL-CELLS; DOPED STRONTIUM-TITANATE; DIRECT OXIDATION; HYDROCARBONS; PERFORMANCE; SRTIO3; CARBON; SR; CONDUCTIVITY; FABRICATION
Issue Date
2008
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.155, no.11, pp.B1179 - B1183
Abstract
Composites formed by infiltration of 45 wt % La0.3 Sr 0.7 Ti O3 (LST) into 65% porous yttria-stabilized zirconia (YSZ) were examined for application as solid oxide fuel cell (SOFC) anodes. Although LST does not react with YSZ, the structure of the LST deposits was strongly affected by the calcination temperature. At 1373 K, the LST formed loosely packed, 0.1 μm particles that filled the YSZ pores. The conductivity of this composite depended strongly on the pretreatment conditions but was greater than 0.4 Scm after heating to 1173 K in humidified (3% H2 O) H2. Following calcination at 1573 K, the LST had sintered significantly, decreasing the conductivity of the composite by a factor of approximately 5. The addition of a catalyst was critical for achieving reasonable electrochemical performance, with the addition of 0.5 wt % Pd and 5 wt % ceria increasing the power density of otherwise identical cells from less than 20 to 780 mW cm2 for operation in humidified (3% H2 O) H2 at 1073 K. Electrodes prepared from LST deposits calcined at 1373 K were found to exhibit a much better performance than those prepared from LST deposits calcined at 1573 K, demonstrating that the structure of the composite is critical for achieving high performance.
URI
Go to Link
DOI
10.1149/1.2976775
ISSN
0013-4651
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
2-s2.0-52649179364.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU