Accession Number : AD0811675

Title :   THERMAL BATTERY.

Descriptive Note : Quarterly technical progress rept. no. 3, 1 Jan-31 Mar 67,

Corporate Author : GENERAL MOTORS CORP INDIANAPOLIS IN ALLISON GAS TURBINE DIV

Personal Author(s) : Hietbrink, Earl H. ; Swinkels, Dom A. J. ; Petraits, John J. ; Craig, Gale M.

Report Date : 11 APR 1967

Pagination or Media Count : 48

Abstract : A research program is being conducted to define and eliminate those problems at the Cl2 electrode which prevent the Li-Cl2 battery from operating as a practical and reliable missile energy source. This application requires a high power density, high rate primary thermal battery. Concentration polarization measurements were made on 1/16-in. thick Poco AX graphite electrodes at 1-, 2-, and 5-atm pressure using various mixtures of Ar and Cl2. The data are presented as a function of current density and Ar and Cl2 mixture for each pressure. Three laboratory demonstration cells were tested at cell pressures up to 3 atm. A maximum power density of 43 w/sq cm was demonstrated. Stray current cell tests were conducted to determine the correction factor that should be applied to the power density measurements to allow for stray currents between stored Li and the cell body. The parametric scaling of the B-1 and B-2 battery designs was completed over a range of power levels, power densities, and operating times. A weight energy density of 255 w-hr/lb was calculated with a power density of 25 w/sq cm for the B-1 battery. The B-2 battery obtained a maximum weight density of 115 w-hr/lb at a power density of 10 w/sq cm. A preliminary study of a long duration battery (1 to 100 hrs) indicated that weight energy densities of 400 w-hr/lb are feasible. (Author)

Descriptors :   (*THERMAL BATTERIES, RELIABILITY(ELECTRONICS)), LITHIUM COMPOUNDS, CHLORINE COMPOUNDS, ARGON, GRAPHITE, ANODES, DENSITY, PRESSURE, WEIGHT, GUIDED MISSILE BATTERIES, POWER SUPPLIES, ELECTROLYTES, ELECTRICAL RESISTANCE, POLARIZATION, CONDUCTIVITY, IMPURITIES, CATHODES, PRIMARY BATTERIES, PERFORMANCE(ENGINEERING), SODIUM CHLORIDE, SCHEDULING, GASES, CHLORINE.

Subject Categories : Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE