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J. Korean Ceram. Soc. > Volume 46(3); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(3): 282.
doi: https://doi.org/10.4191/kcers.2009.46.3.282
수계 테이프 케스팅 법에 의한 봉상 γ-LiAlO2 입자 강화 MCFC 매트릭스 제조 공정의 최적화
최현종, 신미영, 현상훈, 임희천1
연세대학교 신소재공학과
1한국전력공사 전력연구원
Optimization of Rod-shaped γ-LiAlO2 Particle Reinforced MCFC Matrices by Aqueous Tape Casting
Hyun-Jong Choi, Mi-Young Shin, Sang-Hoon Hyun, Hee-Chun Lim1
School of Advanced Materials Science and Engineering, College of Engineering, Yonsei University
1KEPRI, Korea Electric Power Research Institute
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.
Key words: Molten carbonate fuel cell, Aqueous tape casting, Ovalbumin, Rod-shaped gamma-$LiAlO_2$
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