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Characteristics of LSC coated Metallic Interconnect for Solid Oxide Fuel Cell  

Pyo, Seong-Soo (Fuel Cell Research Center, New and Renewable Energy Research Division, Korea Institute of Energy Research)
Lee, Seung-Bok (Fuel Cell Research Center, New and Renewable Energy Research Division, Korea Institute of Energy Research)
Lim, Tak-Hyoung (Fuel Cell Research Center, New and Renewable Energy Research Division, Korea Institute of Energy Research)
Park, Seok-Joo (Fuel Cell Research Center, New and Renewable Energy Research Division, Korea Institute of Energy Research)
Song, Rak-Hyun (Fuel Cell Research Center, New and Renewable Energy Research Division, Korea Institute of Energy Research)
Shin, Dong-Ryul (Fuel Cell Research Center, New and Renewable Energy Research Division, Korea Institute of Energy Research)
Publication Information
Korean Chemical Engineering Research / v.48, no.2, 2010 , pp. 172-177 More about this Journal
Abstract
This study reports the high-temperature oxidation kinetics, ASR(area specific resistance), and interfacial microstructure of metallic interconnects coated with conductive oxides in oxidation atmosphere at $800^{\circ}C$, The conductive material LSC($La_{0.8}Sr_{0.2}CoO_3$, prepared by Solid State Reaction) was coated on the Crofer22APU. The contact behavior of coating layer/metal substrate was increased by sandblast. The electrical conductivity of the LSC coated Crpfer22APU was measured by a DC two probe four wire method for 4000hr, in air at $800^{\circ}C$. Microstructure and composition of the coated layer interface were investigated by SEM/EDS. These results show that a coated LSC layer prevents the formation and growth of oxide scale such as $Cr_2O_3$ and enhances the long-term stability and electrical performance of metallic interconnects for SOFCs.
Keywords
SOFC; Metallic Interconnect; Protective Coating; Lanthanum Strontium Cobalt Oxide;
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