Investigation of Lithium-Thionyl Chloride Battery Safety Hazards.
Final rept. 28 Sep 81-31 Dec 82,
GOULD RESEARCH CENTER ROLLING MEADOWS IL MATERIALS LAB
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In-situ Infrared spectroscopy and Mass spectrometry were used to identify the reaction products in LiSOCl2 batteries during low rate discharge and anode limited reversal. The sources of all the absorption bands in the IR absorption spectrum of the electrolyte were identified and quantitated. Processes giving rise to free radical formation were detected by in-situ EPR spectroscopy. The technique of direct-inlet in-situ mass spectrometry was applied for the first time to the LiSOCl2 system, to identify without any ambiguity the presence of HCl, SO2, CS2, S2O, SCl2 and SO2C12 as well as Cl and CF2 fragments in the gas phase above an operating cell. S2O was not detected in the liquid phase. The apperance potentials for SCl2, SOCl2, SO2Cl2 and S2Cl2 were measured. Evidence for the formation of Cl20 was refuted. Significant effects directly attributable to temperature and current density were identified and quantified. No clearly hazardous reactios were identified other than those inherent in the system. As a result of this work, a much clearer understanding of the chemistry of the LiSOCl2 system has been achieved. Several analytical techniques have been developed and applied for the first time to the LiSOCl2 system, which could potentially lead to a more complete explanation of the chemistry of the system.
- Electrochemical Energy Storage
- Safety Engineering