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http://dx.doi.org/10.4191/KCERS.2009.46.3.282

Optimization of Rod-shaped γ-LiAlO2 Particle Reinforced MCFC Matrices by Aqueous Tape Casting  

Choi, Hyun-Jong (School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University)
Shin, Mi-Young (School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University)
Hyun, Sang-Hoon (School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University)
Lim, Hee-Chun (KEPRI, Korea Electric Power Research Institute)
Publication Information
Journal of the Korean Ceramic Society / v.46, no.3, 2009 , pp. 282-287 More about this Journal
Abstract
Rod-shaped particle reinforced $LiAlO_2$ matrices for MCFC were fabricated by an aqueous tape-casting technique. The hydrolysis reaction and agglomeration of $\gamma-LiAlO_2$ particles in aqueous slurries were inhibited by additions of $LiOH{\cdot}H_2O$ and glycerin to the aqueous $\gamma-LiAlO_2$ slurry. The tape-casting, performed using the aqueous slurry containing protein albumin, was fast and led to an effective drying at casting temperature range of $60{\sim}65^{\circ}C$. The strength of the particle reinforced matrix was improved about 4 times compared to that of matrix without reinforcement. Pore size distribution ($0.1{\sim}0.4{\mu}m$) and porosity ($50{\sim}60%$) of the reinforced matrices were determined to be appropriate for the MCFC matrix. The aqueous tape casting process is not only environmental-friendly but also efficient for fabricating MCFC matrices compared to non-aqueous tape casting.
Keywords
Molten carbonate fuel cell; Aqueous tape casting; Ovalbumin; Rod-shaped gamma-$LiAlO_2$;
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