Abstract
Thermal batteries are used for military power sources that require robustness and long storage life such as missiles and torpedoes. FeS2 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 FeS2 has been deterred its possible application for higher power thermal batteries. In order to improve the power density, high energy ball milling of FeS2 has been introduced to crush the micron-sized FeS2. Discharge characteristics of the single cells fabricated with nano-materials and conventional FeS2 powder were evaluated.
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