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http://dx.doi.org/10.5229/JKES.2005.8.4.162

Characteristics of (Ca,Sr)-doped LaCrO3 Coating Layer for Ceramic Interconnect of Solid Oxide Fuel Cell  

Lee, Gil-Yong (Hydrogen & Fuel Cells Research Department, Korea Institute of Energy Research)
Peck, Dong-Hyun (Hydrogen & Fuel Cells Research Department, Korea Institute of Energy Research)
Song, Rak-Hyun (Hydrogen & Fuel Cells Research Department, Korea Institute of Energy Research)
Publication Information
Journal of the Korean Electrochemical Society / v.8, no.4, 2005 , pp. 162-167 More about this Journal
Abstract
Using Pechini method, we synthesized the $La_{0.6}Ca_{0.41}CrO_3$ (LCC41) and $La_{0.8}Sr_{0.05}Ca_{0.15}CrO_3$ (LSCC) powders for slurry dip coating, and $La_{0.75}Ca_{0.27}CrO_3$ (LCC27) powder for air plasma spray coating. The sintering property of the powders and their coating properties were investigated. The average particle sizes of the LCC41, LSCC, LCC27 were 0.6, 0.9, $1.5{\mu}m$, respectively. The relative density of LCC41 bulk was to be found about 98%. The LSCC coating on anode support prevented Ca migration of the coated LCC41 on the anode some or less, which was confirmed from EDS result. The air plasma spray-coated LCC27 with the dip-coated LCC41 were more dense and showed better electrical conductivity than those of the air plasma spray-coated LCC27 and the dip-coated LSCC and LSCC41. The LCC41 and LCC27 showed good electrical conductivities, but the LSCC had a poor electrical conductivity probably due to low sinterability
Keywords
Ceramic interconnect; (Ca,Sr) doped $LaCrO_3$; Pechini method; Slurry dip coating; Air plasma spray coating;
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