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J. Korean Ceram. Soc. > Volume 46(6); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(6): 648.
doi: https://doi.org/10.4191/kcers.2009.46.6.648
SiOC 매트(Mat)를 이용한 열전지용 전해질 격리판 제조 및 특성
임경훈, 조광연, 류도형, 신동근, 진은주, 김현이1, 정해원2, 이홍림3
한국세라믹기술원 미래융합세라믹본부
1서울대학교 재료공학부
2국방과학연구소 제4기술연구본부
3연세대학교 신소재공학과
Properties of the Electrolyte Separators for Thermal Batteries Using SiOC Mat
Kyoung-Hoon Lim, Kwang-Youn Cho, Doh-Hyung Riu, Dong-Geun Shin, Eun-Ju Jin, Hyoun-Ee Kim1, Hae-Won Cheong2, Hong-Lim Lee3
Division of Nano materials Application, KICET
1Department of Materials Science and Engineering, Seoul National University
2Agency for Defense Development
3Department of Materials Engineering, Yonsei University
Ceramic fiber separator is the promising material for thermal battery system because it reduces the production cost and offers the potential to a new application compared to a pellet type electrolyte. The electrolyte separator for thermal battery should be easily handled and loaded a large amount of the molten lithium salt. Ceramic fibers were used as an electrolyte separator and the lithium based molten salts were infiltrated into the ceramic filters. Leakage of molten salt (several lithium salts) leads to short-circuit during the thermal battery operation. In this study, a uniform and fine SiOC mat with fibers ranging from 1 to 3 ${mu}m$ was obtained by electrospinning of polycarbosilane and pyrolysis. The optimum spinning conditions for obtaining fine diameters of SiOC fiber were controlled by the solution composition and concentration, applied voltage and spinning rate, release rate by porosity. The pore structures of the ceramic filter and the melting properties of the lithium salts affected to the electrolyte loading and leakage. The importance of the fiber size and porosity and their control was discussed and the mechanical properties were also discussed.
Key words: Thermal battery, Molten salt, Ceramic filter, Electrolyte separator, Infiltration
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