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Mechanistic studies related to the safety of Li/SOCl/sub 2/ cells

Journal Article · · J. Electrochem. Soc.; (United States)
DOI:https://doi.org/10.1149/1.2113880· OSTI ID:6401251
; ; ; ; ; ;
Mechanistic studies of the reactions in Li-SOCl/sub 2/ cells have been undertaken to improve understanding of the safety problems of these cells. The electrochemical reduction of 1.5m LiAlCl/sub 4// has been investigation investigated using gas chromatography, electron spin resonance spectroscopy, and infrared spectroscopy. Cl/sub 2/ and S/sub 2/Cl/sub 2/ have been identified as intermediates in the reduction of SOCl/sub 2/, along with a radical species (g /SUB xx/ = 2.004, g /SUB xx/ = 2.016, g /SUB zz/ = 2.008) and the proposed triplet ground-state dimer of this radical. SO/sub 2/ and sulfur have been identified as products. Based upon these findings, a mechanism for the electrochemical reduction of 1.5M LiAlCl/sub 4//SOCl/sub 2/ has beenproposed, and its implications for safety of Li-SOCl/sub 2/ cells during discharge to +0.5V at 25/sup 0/-30/sup 0/C are discussed.
Research Organization:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
OSTI ID:
6401251
Journal Information:
J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 132:3; ISSN JESOA
Country of Publication:
United States
Language:
English

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Related Subjects

25 ENERGY STORAGE
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250903 -- Energy Storage-- Batteries-- Materials
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CHROMATOGRAPHY
ELECTRIC BATTERIES
ELECTRIC DISCHARGES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTROLYTES
ELEMENTS
GAS CHROMATOGRAPHY
HALIDES
HALOGEN COMPOUNDS
KINETICS
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
LITHIUM-SULFUR BATTERIES
MECHANICS
METAL-NONMETAL BATTERIES
NONMETALS
OCCUPATIONAL SAFETY
OPERATION
OXYCHLORIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REDUCTION
SAFETY
SEPARATION PROCESSES
SPECTROSCOPY
SULFUR
SULFUR CHLORIDES
SULFUR COMPOUNDS