Accession Number : ADA207612

Title :   Advanced Calcium-Thionyl Chloride High-Power Battery.

Descriptive Note : Final rept. 23 Dec 87-22 Dec 88,

Corporate Author : RAMAT-TEL-AVIV UNIV AUTHORITY FOR RESEARCH AND INDUSTRIAL DEVELOPMENT LTD (IS RAEL)

Personal Author(s) : Peled, Emanuel

PDF Url : ADA207612

Report Date : 08 Feb 1989

Pagination or Media Count : 91

Abstract : Recently TAU has made a breakthrough in the development of two advanced Calcium Thionyl chloride systems which have much better storage properties than the state-of-art Ca-SOC12 cell. This has been done by replacing the CaX2(X=A1C14) electrolyte by SrX2 (type A), or BaX2 type B. The project's goals are to gain a better understanding fo the electrochemistry of the advanced systems and to establish their safety and performance. This report contains four chapters. The calorimetric study of Ca/Sr(A1C14)2-SOC12+7%(v/v)SO2 C-size cells during constant-temperature discharge is reported in chapter 1. Fresh and stored (70 C for four weeks) cells were discharged inside a dedicated home-made calorimeter on two loads. There was no significant difference between fresh and stored cells with respect to heat generation during discharge. There was no loss in capacity during four weeks of storage at 70 C. Chapter 2 presents a calorimetric study of the baseline cell Ca/Ca(A1C14)2-SOC12 + 7% (V/V)SO2. Chapter 3 presents the performance, safety and storage properties of Ca/CaX2 and CA/SrX2 cells. Chapter 4 presents a summary of the results regarding the properties of MX2-SO2-TC solutions (M=Ca,Sr,Ba) including Raman spectra, viscosity and conductivity data. We explain the effect of SO2 and temperature on the conductivity and conduction mechanism. (AW)

Descriptors :   *STORAGE BATTERIES, BASE LINES, CALORIMETERS, ELECTROLYTIC CELLS, ELECTRICAL CONDUCTIVITY, ELECTROCHEMISTRY, HEAT, PRODUCTION, RAMAN SPECTRA, CALCIUM, SULFUR COMPOUNDS, CHLORIDES, TEMPERATURE, VISCOSITY, STRONTIUM, BARIUM, PERFORMANCE(ENGINEERING), SAFETY

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE