Influence of Submicron-sized FeS_2 Cathode Powder on Single Cell Discharge Performance of Thermal Batteries

摘要

Thermally activated 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 deterred its high power applications. In order to improve the power density, high energy ball milling of FeS_2 powder has been introduced to crush the micron-sized FeS_2. Discharge performances of the single cells fabricated with submicron-sized and conventional FeS_2 powder were evaluated.