1982
DOI: 10.1149/1.2124314
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Characterization of Reactions and Products of the Discharge and Forced Overdischarge of Li /  SO 2 Cells

Abstract: A procedure for the quantitative determination of Li2S204 in discharged Li/SO2 cells is described. The amount of Li~SeO4 found in cells discharged to potentials down to zero volt was in very good agreement with the discharge stoichiometry, 2Li + 2SO2 -, Li2S204. The Li2S~O4 has been further characterized by infrared, ESCA, and X-ray analyses. A number of organic compounds including CH4 and 3,5-diamino-2,4-hexenenitrile have been identified in forced overdischarged cells. Products identified in cells that vente… Show more

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Cited by 60 publications
(60 citation statements)
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“…This clearly demonstrates the thermal instability of LiFSi:AN based highlyconcentrated electrolytes in contact with partially lithiated graphite specially considering the fact that this thermal runaway happened under inert atmosphere. AN has been proposed to be reduced at the surface of Li metal electrodes following equation 2 [40]:…”
Section: 1mentioning
confidence: 99%
“…This clearly demonstrates the thermal instability of LiFSi:AN based highlyconcentrated electrolytes in contact with partially lithiated graphite specially considering the fact that this thermal runaway happened under inert atmosphere. AN has been proposed to be reduced at the surface of Li metal electrodes following equation 2 [40]:…”
Section: 1mentioning
confidence: 99%
“…AN spontaneously reacts with lithium metal (i.e., a strong reducing agent), and thus, a lithium metal electrode does not work reversibly in AN electrolytes. 11 For the same reason, there is no report on reversible lithium intercalation into graphite in AN solutions, excluding AN from the candidate of electrolytes for lithium-ion batteries. Hence, overcoming the poor reductive stability of AN will bring about substantial progress in next-generation advanced batteries.…”
Section: ■ Introductionmentioning
confidence: 99%
“…The ex situ X-ray diffraction spectra in Fig. 2d reveal that characteristic peaks of Li 2 S 2 O 4 appear and grow during discharge without any notable by-products, followed by the reduction of these peaks during the charge and their complete disappearance after the end of the charge3148. These results evidently confirm that the reversible formation and decomposition of Li 2 S 2 O 4 is the major electrochemical reaction occurring in the Li-SO 2 system using an EC/DMC electrolyte, which is consistent with the DFT calculations.…”
Section: Resultsmentioning
confidence: 97%