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

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Effect of cathode geometry on the electrochemical performance of flat tubular segmented-in-series(SIS) solid oxide fuel cell

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Title
Effect of cathode geometry on the electrochemical performance of flat tubular segmented-in-series(SIS) solid oxide fuel cell
Author
Mushtaq, UsmanKim, Dae-WiYun, Ui-JinLee, Jong-WonLee, Seung-BokPark, Seok-JooSong, Rak-HyunKim, GuntaeLim, Tak-Hyoung
Issue Date
2015-05
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.40, no.18, pp.6207 - 6215
Abstract
A flat tubular segmented in series (SIS)-SOFC was fabricated with variable cathode thicknesses and the performance characteristics were analyzed. Vacuum slurry dip coating and screen printing technique were employed to coat the NiO-Ce1ScSZ10 anode, Ce1ScSZ10 electrolyte, and La0.6Sr0.4Co0.2Fe0.8 cathode on the extruded 3YSZ ceramic support. A sub module consisting of 5-cell with a total active electrode area of 4cm2 was interconnected in series using Ag-glass composite. Electrochemical performance analysis was conducted between 600 and 800°C using 300CC/min. 3vol.% humidified hydrogen fuel and 1500CC/min. air as oxidant. The results obtained from electrochemical impedance spectroscopy and current-voltage polarization curves revealed a 57μm thick cathode layer as the optimum thickness. An application of LSCo as the cathode current collector on the surface of the cathode enhanced the performance by approximately 30% at 750°C. © 2015 Hydrogen Energy Publications, LLC
URI
https://scholarworks.unist.ac.kr/handle/201301/11363
URL
http://www.sciencedirect.com/science/article/pii/S0360319915006138
DOI
10.1016/j.ijhydene.2015.03.040
ISSN
0360-3199
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