Abstract
In view of the possible application in non-aqueous líthium cells operating at relatively high temperatures, molten dimethylsulphone (DMSO2) has been used as the electrolyte solvent in lithium cells at 150°C. The stability of lithium in molten DMSO2 has been found to be good as compared with that observed in organic solvents such as propylene carbonate, thus indicating that the Li+/Li system can be used as a suitable reference electrode in this medium.
The electrochemical behaviour of some transition metal oxides has been investigated in LIClO4 solutions in molten DMSO2. The results obtained from voltammetric and chronopotentiometric measurements have shown a satisfactory behaviour for all the cathodic materials tested. Moreover, electrochemical insertion of Li+ ions into the crystal lattice of these oxides is a very fast process. Thus molten DMSO2 appears to be a very interesting organic solvent usable in high energy density non-aqueous lithium cells.
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Pereira-Ramos, J.P., Messina, R. & Perichon, J. Electrochemical behaviour of some transition metal oxides in molten dimethylsulphone at 150°C. J Appl Electrochem 16, 379–386 (1986). https://doi.org/10.1007/BF01008848
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DOI: https://doi.org/10.1007/BF01008848