Accession Number : AD0819543

Title :   LI-CL2 PRIMARY BATTERY INVESTIGATION.

Descriptive Note : Final technical rept. 1 Jul 66-30 Jun 67,

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

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

Report Date : AUG 1967

Pagination or Media Count : 136

Abstract : The higher energy and power density potentials of the Li-Cl2 couple were investigated to determine its applicability to advanced weapon requirements. Concentration polarization tests were completed with the Cl2 electrode at 1/16-in. and 1/8-in. thickness, pressure to 5 atm, and Cl2 purity levels to 99.9%. Current densities up to 11 to 12 amp/sq cm were demonstrated with polarizations of 0.4 v. Eleven high power density laboratory cells were tested at pressures up to 3 atm. Power densities above 27 w/sq cm were obtained for periods exceeding 30 min with a peak power density of 43 w/sq cm demonstrated. Analytical system studies were also completed to evaluate the effects of design and operational parameters on Li-Cl2 battery weight and volume characteristics. Battery energy densities up to 300 w-hr/lb and 13.5 w-hr/cu in. were obtained with power densities near 20 w/sq cm found to be most satisfactory for short discharge (greater than 30 min) batteries. This program has shown that the polarization at the Cl2 electrode can be predicted and that the resulting performance is sufficient to permit the design and operation of Li-Cl2 cells with power densities above 25 w/sq cm. The analytical studies provide comparative data to illustrate the potentials of the Li-Cl2 system and that 25 w/sq cm will be adequate cell power density to attain such battery designs.

Descriptors :   *CHLORIDES), (*PRIMARY BATTERIES, ACCEPTABILITY), (*LITHIUM COMPOUNDS, POLARIZATION, THICKNESS, DENSITY, ELECTRODES, ELECTROCHEMISTRY, IMPURITIES, PRESSURE, INSTRUMENTATION, WETTING, GRAVITY, GAS ANALYSIS, CONTROL SYSTEMS, IONS, GRAPHITE, HEAT SINKS, TEMPERATURE, TEST METHODS.

Subject Categories : Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE