应用化学 ›› 1993, Vol. 0 ›› Issue (3): 54-56.

• 研究简报 • 上一篇    下一篇

阴极限制型Li/SOCl2电池过放电产物的热分析

肖以金, 杨汉西, 查全性   

  1. 武汉大学化学系 430072 武汉
  • 收稿日期:1992-02-28 修回日期:1992-09-24 出版日期:1993-06-10 发布日期:1993-06-10

THE DISCHARGE PRODUCTS IN CATHODE-LIMITED Li/SOCl2 CELLS

Xiao Yijin, Yang Hanxi, Zha Quanxing   

  1. Department of Chemistry, Wuhan University, 430072 Wuhan
  • Received:1992-02-28 Revised:1992-09-24 Published:1993-06-10 Online:1993-06-10

摘要: Li/SOCl2电池体系以其高比能量和优异的放电性能引起了电源界的重视。有关该体系的不安全行为曾有一些研究。本文用DSC、EDAX、XPS等方法分析了电池的反应产物和热敏性,和模拟组分对比,以图找出引起电池热失控爆炸的原因。

关键词: 锂/亚硫酰氯电池, 过放电产物, 热分析

Abstract: The chemical composition and thermal properties of the products on the carbon cathode in overdischarged Li/SOCl2 cells have been investigated by DSC, EDAX and XPS methods. The rate of the exothermic reaction and half life of the hazardous products have been evaluated according to Ozawa's formulation. The results showed that the solid deposits on the passivated cathode were composed of LiCI,Li2S, Li2S2, LixSy,S and elemental lithium. The explosion of the cell at overdiseharged condition is mainly caused by the well-dispersed mixture of fine elemental sulphur and lithium.

Key words: lithium-thionyl chloride cell, overdischarged product, thermal analysis