Accession Number : ADA119381

Title :   Lithium-Sulfur Dioxide (Li/SO2) Battery Safety Hazards - Thermal Studies.

Descriptive Note : Final rept. 24 Dec 80-5 Mar 82,

Corporate Author : HONEYWELL POWER SOURCES CENTER HORSHAM PA

Personal Author(s) : Ebner,Walter B ; Kim,Kwang Y ; Venkatasetty,H V

PDF Url : ADA119381

Report Date : Mar 1982

Pagination or Media Count : 246

Abstract : In this program, the Accelerating Rate Calorimeter (ARC) has been employed to study the thermal and pressure behavior of exothermic reactions occurring in Li/SO2 cells under the conditions of (1) forced overdischarge at ambient temperature, (2) resistive overdischarge at ambient temperature, (3) forced overdischarge at -35 C, and (4) discharge at -35 C. Detected reactions have been characterized in terms of self-heating rate, rate of pressure generation, magnitude of overall heat generation, magnitude of overall pressure rise, and kinetic parameters including activation energy and reaction order. Micro-calorimeter studies determined the heat of reaction for the lithium/acetonitrile reaction to be -54 + or - 1.0 kcal/mole-Li. Lithium/aluminum alloy was found to be unreactive with acetonitrile at ambient temperature. Preliminary investigations were also carried out using FTIR spectroscopy to study the products of electrolyte oxidation on nickel and stainless steel electrodes. (Author)

Descriptors :   *Electric batteries, *Sulfur oxides, *Lithium compounds, *Safety, Hazards, Thermal properties, Acceleration, Rates, Calorimeters, Pressure, Exothermic reactions, Electrolytic cells, Electric discharges

Subject Categories : Electrochemical Energy Storage
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE