Accession Number : ADA093038
Title : Exploratory Development of an Electrically Rechargeable Lithium Battery.
Descriptive Note : Final rept. 2 Jul 79-1 Jul 80,
Corporate Author : EIC LABS INC NEWTON MA
Personal Author(s) : Abraham,K M ; Goldman,J L ; Dempsey,M D ; Holleck,G L
Report Date : Oct 1980
Pagination or Media Count : 87
Abstract : The cathodic behavior or V6013 was investigated in rechargeable Li cells of the type, Li/2Me-THF,LiAsF6/V6013,C. Two forms of V6013 were synthesized and characterized. These were a stoichiometric form, i.e., V02.17, and a slightly non-stoichiometric form, i.e., V02.19. Stoichiometric V6013 was prepared by heating requisite quantities of V205 and V powder for 24 hrs. at 650 C. The slightly non-stoichiometric V6013 was prepared by the thermal decomposition of NH4V03 at 450 C. The discharge characteristics of the stoichiometric oxide at 60 C were similar to that of non-stoichiometric oxide at room temperature. The rechargeability of both the oxides were found to be sensitive to the lower voltage cutoff. The safest limits of cycling were 3.0 and 1.9V. Potentiostatic discharges of the oxides between 1.9 and 1.3V revealed a high capacity irreversible reduction process at about 1.6V. Three types of hermetically sealed cells were constructed and tested. In a high capacity (5Ah) prismatic cell utilizing the non-stoichiometric oxide, energy densities of 106 Whr/kg and 190 Whr/DM3 were achieved.
Descriptors : *RESEARCH MANAGEMENT , *LITHIUM COMPOUNDS , *ELECTRIC BATTERIES , *ELECTRIC CHARGE , REACTION KINETICS , OXIDES , HEATING , ELECTRIC DISCHARGES , VANADIUM COMPOUNDS , CYCLIC TESTS , ELECTROLYTIC CELLS , HERMETIC SEALS
Subject Categories : Electrochemical Energy Storage
Distribution Statement : APPROVED FOR PUBLIC RELEASE