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HIGH ENERGY SYSTEM (ORGANIC ELECTROLYTE)
Quarterly rept. no. 2, 15 Sep-15 Dec 1966
ELECTRIC STORAGE BATTERY CO YARDLEY PA CARL F NORBERG RESEARCH CENTER
Pagination or Media Count:
Several new electrolyte solvents were evaluated in an attempt to obtain a solution with properties superior to those of LiC104propylene carbonate. Although high specific conductivities, greater than 0.01ohmcm, were obtained in a few instances, LiC104lactonitrile and LiC1041, 3, Dioxolane, these electrolytes were very corrosive toward lithium. A new technique was used to prepare highly purified and anhydrous LiC104, by recrystallization from water and refluxing in ether. This process is based on the highly preferential solubility of anhydrous, as compared to hydrated, LiC104 in diethyl ether. Storage of CuF2 cathodes in electrolyte was found to result in more than a 50 loss in discharge efficiency after only two weeks storage. Complexones were re-evaluated, at low concentrations, in highly purified electrolyte, to determine the effect on CuF2 cathode performance. They were found to adversely affect the efficiency causing a 30-50 loss in performance with as little as 0.15 complexone. Silver II oxide cathodes were discharged at current densities between 2 and 8 macm2 in LiC104dimethyl sulfite and LiC104 dimethyl carbonate solutions. Energy density was found to decrease about 50 as current density increased over the range tested.
APPROVED FOR PUBLIC RELEASE