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Effect of Particle Size of Cathode Materials on Discharge Properties of Thermal Batteries

양극 활물질의 입도에 따른 열전지 출력 특성 연구

  • Lee, Jungmin (The 4th R&D Institute-3, Agency for Defense Development)
  • 이정민 (국방과학연구소, 4기술연구본부 3부)
  • Received : 2014.04.18
  • Accepted : 2014.05.24
  • Published : 2014.06.01

Abstract

Thermal batteries are used for military power sources that require robustness and long storage life such as missiles and torpedoes. $FeS_2$ powder is currently used for cathode materials because of its high specific energy density, environmental non-toxicity and low cost. However, large particle size of conventional $FeS_2$ has been deterred its possible application for higher power thermal batteries. In order to improve the power density, high energy ball milling of $FeS_2$ has been introduced to crush the micron-sized $FeS_2$. Discharge characteristics of the single cells fabricated with nano-materials and conventional $FeS_2$ powder were evaluated.

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