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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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Strontium effect of lanthanum doped ordered Perovskite composite cathode on electrochemical characteristics for IT-SOFCs

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Title
Strontium effect of lanthanum doped ordered Perovskite composite cathode on electrochemical characteristics for IT-SOFCs
Author
Choi, SihyukPark, SeonhyeShin, JeeyoungKim, Guntae
Issue Date
2013-01
Publisher
The Electrochemical Society
Citation
ECS Transactions, v.57, no.1, pp.2157 - 2162
Abstract
The effects of Sr substitution for Ba on the structural properties, electrical conductivity, and electrochemical performance of a cation-ordered perovskite LaBaCo2O5+δ(LBCO) oxide have been investigated as a cathode material for IT-SOFC applications. The electrical conductivity of LaBa0.5Sr0.5Co2O 5+δ (LBSCO) is much higher than that of Sr-free LBCO. The minimum area specific resistance value is achieved at LBSCO composite with 40 wt % Ce0.9Gd0.1O2+δ (GDC). The best performance of LBSCO-40GDC based on a GDC electrolyte reaches 1.254 W cm-2 at 600 °C. Therefore, the ordered perovsikte structure, LBSCO-40GDC, is a potential candidate cathode material in IT-SOFC applications.
URI
https://scholarworks.unist.ac.kr/handle/201301/6138
URL
http://ecst.ecsdl.org/content/57/1/2157
DOI
10.1149/05701.2157ecst
ISSN
1938-5862
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