Li-B/FeS_2溶盐热电池放电特性的研究

Study on discharge characteristics of Li B/FeS 2 molten salt thermal cell

研究了６７％（质量百分数）Ｌｉ－Ｂ合金／ＫＣｌ－ＬｉＣｌ／ＦｅＳ２系列热激活单电池在不同放电温度、电流密度和电解质用量的情况下的恒流放电特征，对影响放电容量的基本因素进行了初步分析。结果表明小电流密度时（小于２００ｍＡ）减少电解质用量，大电流密度时（大于２００ｍＡ）增加电解质用量，并在５００℃～５５０℃之间放电，可以获得较高的放电容量，本试验中最大放电容量为６５５２Ｃ／ｇ，其总锂量的利用率可达７０％。

Constant current discharge characteristics of Li B/KCl LiCl/FeS 2 molten salt thermal cell under different temperature,current density and electrolyte quantity have been studied.The basic factors effecting discharge capacity have also been analyzed.The results show that higher discharge capacity can be obtained by decreasing electrolyte quantity under low discharge current density(less than 200 mA/cm 2)or increasing it under high discharge current density(more than 200 mA/cm 2) at the temperature from 500 ℃ to 550 ℃. The greatest discharge capacity in this test was 6 552(C/g). The utilization of the overall lithium was up to 70%.