Molten Salt Electrochemical Studies and High Energy Density Cell Development
Rechargeable cells of the type LiAl/LiCl-KCl/FeS having 75 Ah capacity have been constructed and cycled. Utilization of active materials is 70% in a cell containing 15 mole percent Cu2S as an additive to the FeS electrode and over 120 cycles have been achieved in this cell. Coulombic efficiency is 99 percent with a selfdischarge of 1 percent per day at 450°C. Temperature, stand-time, and rate of discharge-charge studies are described. Details of the mechanical design of the cell and cell assembly are discussed.
Electrochemical measurements using cyclic voltammetry in eutectic LiCl-KCl and in mixed halide eutectic lithium melts have been made on TiS2, TiSe2 and VSX. These results are discussed in terms of the possible use of these systems to develop high energy density batteries.
KeywordsCyclic Voltammetry Boron Nitride Molten Salt Negative Electrode Coulombic Efficiency
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