한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제30권5호
  • /
  • Pages.331-337
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  • 2017
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  • 1226-7945(pISSN)
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  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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이트리아 안정화 지르코니아 바인더에 의한 열전지 전기화학적 특성

Electrochemical Properties of Yttria Stabilized Zirconia Binder for Thermal Batteries

  • 김지연 (국방과학연구소 제4기술연구본부)
  • Kim, Jiyoun (The 4th Research and Development Institute, Agency for Defense Development)
  • 투고 : 2017.03.06
  • 심사 : 2017.03.23
  • 발행 : 2017.05.01
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초록

Thermal batteries, reserve power source, is activated by melting of molten salt at the temperature range of $350{\sim}550^{\circ}C$. To immobile the molten state electrolyte when the thermal battery is activated, the binder must be added in electrolyte. Usually, molten salts include 30~40 wt% of MgO binder to ensure electrical insulation as well as safety. However, the conventional MgO binder tends to increase ionic conductive resistance and thus the inclusion of the binder increases the total impedance of the battery. This paper mainly focused on the study of yttria stabilized zirconia (YSZ) as an alternative binder for molten salt. The chemical stability between the molten salt and YSZ is measured by XRD and DSC. And the sufficient path for ionic conduction on molten salt could be confirmed by the enhanced wetting behavior and the enlarged pore size of YSZ. The electrochemical properties were analyzed using single cell tests so that it showed the outstanding performance than that using MgO binder.

키워드

참고문헌

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