Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 9 No. 3 September 1999|
（1.Powder Metallurgy Institute,Central South University of Technology, Changsha 410083, P.R.China;
2. Jinzhu Powder Injection Manufacture Co. Ltd.Jinan 250033, P.R.China）
Abstract:The effects of FeS2 on the discharge characteristics of Li-B alloy/FeS2 thermal battery had been studied. Results showed that 2.5% (mass fraction) Li2O would be needed to rule out the voltage pulse in the first part of discharge curves for the FeS2 powder of small particle size (<44μm). After thermal decomposition, the FeS2had transformed to Fe(1-x)S where x=0.024~0.066. The deficiency of the cathode FeS2 would make discharge voltage decrease 0.4 V. In the discharge test at high temperature (600℃), the discharge voltage decreased fast with the acceleration of the thermal decomposition of FeS2.
Key words: LiB; FeS2; thermal batteries; cathode effect