| Effect of Conductive Additives on $FeS_2$ Cathode |
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Yu-Song Choi, Hae-Won Cheong, Ki-Youl Kim, Sung-Baek Cho |
| $FeS_2$ 양극에 미치는 전도성 첨가제의 영향 |
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최유송, 정해원, 김기열, 조성백 |
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국방과학연구소 |
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| Abstract |
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Thermal batteries have excellent mechanical robustness, reliability, and long shelf life. Due to these characteristics as well as their unique activation mechanism, thermal batteries are widely adopted as military power sources. Li(Si)/$FeS_2$ thermal batteries, which are used mostly in these days, use LiCl-KCl and LiBr-LiCl-LiF as molten salt electrolyte. However, it is known that Li(Si)/$FeS_2$ thermal batteries have high internal resistance. Especially, $FeS_2$ cathode accounts for the greater part of internal resistance in unit cell. Many efforts have been put into to decrease the internal resistance of thermal batteries, which result in the development of new electrode material and new electrode manufacturing processes. But the applications of these new materials and processes are in some cases very expensive and need complicated additional processes. In this study, internal resistance study was conducted by adding carbon black and carbon nano-tube, which has high electron conductivity, into the $FeS_2$ cathode. As a results, it was found that the decrease of internal resistance of $FeS_2$ cathode by the addition of carbon black and carbon nano-tube. |
| Key Words:
Thermal Battery, Carbon Black, CNT, $FeS_2$ |
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