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  • INORGANIC AND PHYSICAL CHEMISTRY  (1)
  • SPACECRAFT PROPULSION AND POWER  (1)
  • 1985-1989  (2)
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  • 1
    Publication Date: 2011-08-19
    Description: Under NASA sponsorship, JPL is developing advanced, high rate Li-SOCl2 cells for future space missions. As part of this effort, Li-SOCl2 cells of various designs were examined for performance and safety. The cells differed from one another in several aspects, such as: nature of carbon cathode, catalysts, cell configuration, case polarity, and safety devices. Performance evaluation included constant-current discharge over a range of currents and temperatures. Abuse-testing consisted of shortcircuiting, charging, and over-discharge. Energy densities greater than 300 Wh/Kg at the C/2 rate were found for some designs. A cell design featuring a high-surface-area carbon cathode was found to deliver nearly 500 Wh/Kg at moderate discharge rates. Temperature influenced the performance significantly.
    Keywords: SPACECRAFT PROPULSION AND POWER
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  • 2
    Publication Date: 2019-07-13
    Description: The ethylene carbonate/2-methyltetrahydrofuran (EC/2-MeTHF) mixed-solvent electrolyte has been experimentally found to possess many desirable electrolyte characteristics for ambient-temperature secondary Li-TiS2 cell applications. As many as 300 cycles have been demonstrated, and a cycling efficiency figure-of-merit of 38.5 percent, for 10-percent EC/90-percent MeTHF mixed-solvent electrolyte in experimental Li-TiS2 cells. The improved performance of this electrolyte is attributable to the formation of a beneficial passivating film on the Li electrode by interaction with the EC.
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: International Power Sources Symposium; June 13-16, 1988; Cherry Hill, NJ; United States
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